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最新评论
-
ken890202:
java简单的通用ajax分页方法 -
hanmiao:
真够乱的,什么都看不清。
Linux安全配置步骤简述 -
houxinyou:
说一下我自己的想法.苹果只是做一款相同的东西,然后是完善.有什 ...
由ORM框架设计看到微软与苹果的最大差别 -
delphixp:
微软技术方案很多?。。。。Java 系统笑而不语。。。
由ORM框架设计看到微软与苹果的最大差别 -
huchiwei:
同意楼上说法。这代码....怎么看!!
web应用dao层的开发经验小结
<span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Linux安全配置步骤简述<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">一、磁盘分区<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">1、如果是新安装系统,对磁盘分区应考虑安全性:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> 1)根目录(/)、用户目录(/home)、临时目录(/tmp)和/var目录应分开到不同的磁盘分区;<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> 2)以上各目录所在分区的磁盘空间大小应充分考虑,避免因某些原因造成分区空间用完而导致系统崩溃;<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">2、对于/tmp和/var目录所在分区,大多数情况下不需要有suid属性的程序,所以应为这些分区添加nosuid属性;<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> 方法一:修改/etc/fstab文件,添加nosuid属性字。例如:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> /dev/hda2 /tmp ext2 exec,dev,nosuid,rw 0 0<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">^^^^^^<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> 方法二:如果对/etc/fstab文件操作不熟,建议通过linuxconf程序来修改。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> * 运行linuxconf程序;<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> * 选择"File systems"下的"Access local drive";<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> * 选择需要修改属性的磁盘分区;<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> * 选择"No setuid programs allowed"选项;<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> * 根据需要选择其它可选项;<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"> * 正常退出。(一般会提示重新mount该分区)<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">二、安装<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">1、对于非测试主机,不应安装过多的软件包。这样可以降低因软件包而导致出现安全漏洞的可能性。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">2、对于非测试主机,在选择主机启动服务时不应选择非必需的服务。例如routed、ypbind等。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">三、安全配置与增强<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">内核升级。起码要升级至2.2.16以上版本。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">GNU libc共享库升级。(警告:如果没有经验,不可轻易尝试。可暂缓。)<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">关闭危险的网络服务。echo、chargen、shell、login、finger、NFS、RPC等<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">关闭非必需的网络服务。talk、ntalk、pop-2等<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">常见网络服务安全配置与升级<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">确保网络服务所使用版本为当前最新和最安全的版本。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">取消匿名FTP访问<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">去除非必需的suid程序<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">使用tcpwrapper<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">使用ipchains防火墙<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">日志系统syslogd<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">一些细节:<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">1.操作系统内部的log file是检测是否有网络入侵的重要线索,当然这个假定你的logfile不被侵入者所破坏,如果你有台服务器用专线直接连到Internet上,这意味着你的IP地址是永久固定的地址,你会发现有很多人对你的系统做telnet/ftp登录尝试,试着运行#more /var/log/secure | grep refused 去检查。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">2. 限制具有SUID权限标志的程序数量,具有该权限标志的程序以root身份运行,是一个潜在的安全漏洞,当然,有些程序是必须要具有该标志的,象passwd程序。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">3.BIOS安全。设置BIOS密码且修改引导次序禁止从软盘启动系统。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">4. 用户口令。用户口令是Linux安全的一个最基本的起点,很多人使用的用户口令就是简单的‘password',这等于给侵入者敞开了大门,虽然从理论上说没有不能确解的用户口令,只要有足够的时间和资源可以利用。比较好的用户口令是那些只有他自己能够容易记得并理解的一串字符,并且绝对不要在任何地方写出来。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">5./etc/exports 文件。如果你使用NFS网络文件系统服务,那么确保你的/etc/exports具有最严格的存取权限设置,不意味着不要使用任何通配符,不允许root写权限,mount成只读文件系统。编辑文件/etc/exports并且加:例如:<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">/dir/to/export host1.mydomain.com(ro,root_squash)<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">/dir/to/export host2.mydomain.com(ro,root_squash)<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">/dir/to/export 是你想输出的目录,host.mydomain.com是登录这个目录的机器名,<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">ro意味着mount成只读系统,root_squash禁止root写入该目录。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">为了让上面的改变生效,运行/usr/sbin/exportfs -a</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">6.确信/etc/inetd.conf的所有者是root,且文件权限设置为600 。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod 600 /etc/inetd.conf<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">ENSURE that the owner is root.<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# stat /etc/inetd.conf<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">File: "/etc/inetd.conf"<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Size: 2869 Filetype: Regular File<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Mode: (0600/-rw-------) Uid: ( 0/ root) Gid: ( 0/ root)<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Device: 8,6 Inode: 18219 Links: 1<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Access: Wed Sep 22 16:24:16 1999(00000.00:10:44)<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Modify: Mon Sep 20 10:22:44 1999(00002.06:12:16)<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Change:Mon Sep 20 10:22:44 1999(00002.06:12:16)<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">编辑/etc/inetd.conf禁止以下服务:<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">ftp, telnet, shell, login, exec, talk, ntalk, imap, pop-2, pop-3, finger,<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">auth, etc. 除非你真的想用它。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">特别是禁止那些r命令.如果你用ssh/scp,那么你也可以禁止掉telnet/ftp。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">为了使改变生效,运行#killall -HUP inetd<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">你也可以运行#chattr +i /etc/inetd.conf使该文件具有不可更改属性。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">只有root才能解开,用命令<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#chattr -i /etc/inetd.conf<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">7. TCP_WRAPPERS<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">默认地,Redhat Linux允许所有的请求,用TCP_WRAPPERS增强你的站点的安全性是举手<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">之劳,你可以放入<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">“ALL: ALL”到/etc/hosts.deny中禁止所有的请求,然后放那些明确允许的请求到<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">/etc/hosts.allow中,如:<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">sshd: 192.168.1.10/255.255.255.0 gate.openarch.com<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">对IP地址192.168.1.10和主机名gate.openarch.com,允许通过ssh连接。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">配置完了之后,用tcpdchk检查<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# tcpdchk<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">tcpchk是TCP_Wrapper配置检查工具,<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">它检查你的tcp wrapper配置并报告所有发现的潜在/存在的问题。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">8. 别名文件aliases<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">编辑别名文件/etc/aliases(也可能是/etc/mail/aliases),移走/注释掉下面的行。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># Basic system aliases -- these MUST be present.<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">MAILER-DAEMON: postmaster<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">postmaster: root<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># General redirections for pseudo accounts.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">bin: root<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">daemon: root<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#games: root ?remove or comment out.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#ingres: root ?remove or comment out.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">nobody: root<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#system: root ?remove or comment out.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#toor: root ?remove or comment out.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#uucp: root ?remove or comment out.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># Well-known aliases.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#manager: root ?remove or comment out.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#dumper: root ?remove or comment out.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#operator: root ?remove or comment out.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># trap decode to catch security attacks<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#decode: root<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># Person who should get root's mail<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#root: marc<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">最后更新后不要忘记运行/usr/bin/newaliases,使改变生效。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">9.阻止你的系统响应任何从外部/内部来的ping请求。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">既然没有人能ping通你的机器并收到响应,你可以大大增强你的站点的安全性。你可以加下面的一行命令到/etc/rc.d/rc.local,以使每次启动后自动运行。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">echo 1 >; /proc/sys/net/ipv4/icmp_echo_ignore_all<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">10. 不要显示出操作系统和版本信息。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如果你希望某个人远程登录到你的服务器时不要显示操作系统和版本信息,你能改变<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">/etc/inetd.conf中的一行象下面这样:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">telnet stream tcp nowait root /usr/sbin/tcpd in.telnetd -h<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">加-h标志在最后使得telnet后台不要显示系统信息,而仅仅显示login:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">11.The /etc/host.conf file<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">编辑host.conf文件(vi /etc/host.conf)且加下面的行:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># Lookup names via DNS first then fall back to /etc/hosts.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">order bind,hosts<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># We don't have machines with multiple IP addresses on the same card<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">(like virtual server,IP Aliasing).<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">multi off<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># Check for IP address spoofing.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">nospoof on<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">IP Spoofing: IP-Spoofing is a security exploit that works by tricking<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">computers in a trust relationship that you are someone that you really aren't.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">12. The /etc/securetty file<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">该文件指定了允许root登录的tty设备,/etc/securetty被/bin/login程序读取,它的<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">格式是一行一个被允许的名字列表,如你可以编辑/etc/securetty且注释出下面的行。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">tty1<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#tty2<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#tty3<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#tty4<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#tty5<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#tty6<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#tty7<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#tty8<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-意味着root仅仅被允许在tty1终端登录。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">13. 特别的帐号<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">禁止所有默认的被操作系统本身启动的且不需要的帐号,当你第一次装上系统时就应该做此检查,Linux提供了各种帐号,你可能不需要,如果你不需要这个帐号,就移走它,你有的帐号越多,就越容易受到攻击。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">为删除你系统上的用户,用下面的命令:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel username<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">为删除你系统上的组用户帐号,用下面的命令:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel username<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">在终端上打入下面的命令删掉下面的用户。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel adm<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel lp<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel sync<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel shutdown<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel halt<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel mail<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如果你不用sendmail服务器,procmail.mailx,就删除这个帐号。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel news<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel uucp<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel operator<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel games<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如果你不用X windows 服务器,就删掉这个帐号。</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel gopher<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# userdel ftp<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如果你不允许匿名FTP,就删掉这个用户帐号。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">===<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">打入下面的命令删除组帐号<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel adm<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel lp<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel mail<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如不用Sendmail服务器,删除这个组帐号<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel news<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel uucp<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel games<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如你不用X Windows,删除这个组帐号<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel dip<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel pppusers<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel popusers<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如果你不用POP服务器,删除这个组帐号<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# groupdel slipusers<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">====<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">用下面的命令加需要的用户帐号<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# useradd username<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">用下面的命令改变用户口令<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# passwd username<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">用chattr命令给下面的文件加上不可更改属性。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chattr +i /etc/passwd<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chattr +i /etc/shadow<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chattr +i /etc/group<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chattr +i /etc/gshadow<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">14. 阻止任何人su作为root.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如果你不想任何人能够su作为root,你能编辑/etc/pam.d/su加下面的行:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">auth sufficient /lib/security/pam_rootok.so debug<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">auth required /lib/security/pam_wheel.so group=isd<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">意味着仅仅isd组的用户可以su作为root.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">然后,如果你希望用户admin能su作为root.就运行下面的命令。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# usermod -G10 admin<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">16. 资源限制<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">对你的系统上所有的用户设置资源限制可以防止DoS类型攻击(denial of service attacks)<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">如最大进程数,内存数量等。例如,对所有用户的限制象下面这样:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">编辑/etc/security/limits.con加:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">* hard core 0<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">* hard rss 5000<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">* hard nproc 20<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">你也必须编辑/etc/pam.d/login文件加/检查这一行的存在。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">session required /lib/security/pam_limits.so<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">上面的命令禁止core files“core 0”,限制进程数为“nproc 50“,且限制内存使用<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">为5M“rss 5000”。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">17. The /etc/lilo.conf file<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">a) Add: restricted<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">加这一行到每一个引导映像下面,就这表明如果你引导时用(linux single),则需要一个password.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">b) Add: password=some_password<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">当与restricted联合用,且正常引导时,需要用户输入密码,你也要确保lilo.conf<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">文件不能被不属于root的用户可读,也免看到密码明文。下面是例子:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">编辑/etc/lilo.conf加:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">====<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">boot=/dev/sda<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">map=/boot/map<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">install=/boot/boot.b<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">prompt<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">timeout=50<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Default=linux<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">restricted ?add this line.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">password=some_password ?add this line.<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">image=/boot/vmlinuz-2.2.12-20<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">label=linux<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">initrd=/boot/initrd-2.2.12-10.img<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">root=/dev/sda6<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">read-only<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod 600 /etc/lilo.conf (不再能被其他用户可读).<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# /sbin/lilo -v (更新lilo配置).<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chattr +i /etc/lilo.conf(阻止该文件被修改)<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">18. 禁止 Control-Alt-Delete 重启动机器命令<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# vi /etc/inittab<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">ca::ctrlaltdel:/sbin/shutdown -t3 -r now<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">To<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#ca::ctrlaltdel:/sbin/shutdown -t3 -r now<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# /sbin/init q<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">19. 重新设置/etc/rc.d/init.d/目录下所有文件的许可权限<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod -R 700 /etc/rc.d/init.d/*<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">仅仅root可以读,写,执行上述所有script file.<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">20. The /etc/rc.d/rc.local file<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">默认地,当你login到linux server时,它告诉你linux版本名,内核版本名和服务器<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">主机名。它给了你太多的信息,如果你就希望得到提示login: ,编辑<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">/etc/rc.d/rc.local放#在下面的行前面:<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">--<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># This will overwrite /etc/issue at every boot. So, make any changes you<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;"># want to make to /etc/issue here or you will lose them when you reboot.<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#echo "" >; /etc/issue<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#echo "$R" >;>; /etc/issue<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#echo "Kernel $(uname -r) on $a $(uname -m)" >;>; /etc/issue<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#cp -f /etc/issue /etc/issue.net<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">#echo >;>; /etc/issue<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">--<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">然后,做下面的事情:<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# rm -f /etc/issue<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# rm -f /etc/issue.net<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# touch /etc/issue<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# touch /etc/issue.net<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">21. 被root拥有的程序的位。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">移走那些被root拥有程序的s位标志,当然有些程序需要这个,用命令‘chmod a-s’完成这个。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">注:前面带(*)号的那些程序一般不需要拥有s位标志。<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# find / -type f \( -perm -04000 -o -perm -02000 \) \-exec ls –lg {} \;<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-xr-x 1 root root 33120 Mar 21 1999 /usr/bin/at<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwsr-xr-x 1 root root 30560 Apr 15 20:03 /usr/bin/chage<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwsr-xr-x 1 root root 29492 Apr 15 20:03 /usr/bin/gpasswd<span class="Apple-converted-space">?</span>
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<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-xr-x 1 root root 3208 Mar 22 1999 /usr/bin/disable-paste<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwxr-sr-x 1 root man 32320 Apr 9 1999 /usr/bin/man<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-r-s--x--x 1 root root 10704 Apr 14 17:21 /usr/bin/passwd<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rws--x--x 2 root root 517916 Apr 6 1999 /usr/bin/suidperl<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rws--x--x 2 root root 517916 Apr 6 1999 /usr/bin/sperl5.00503<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwxr-sr-x 1 root mail 11432 Apr 6 1999 /usr/bin/lockfile<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-sr-x 1 root mail 64468 Apr 6 1999 /usr/bin/procmail<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-xr-x 1 root root 21848 Aug 27 11:06 /usr/bin/crontab<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwxr-sr-x 1 root slocate 15032 Apr 19 14:55 /usr/bin/slocate<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-r-xr-sr-x 1 root tty 6212 Apr 17 11:29 /usr/bin/wall<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rws--x--x 1 root root 14088 Apr 17 12:57 /usr/bin/chfn<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rws--x--x 1 root root 13800 Apr 17 12:57 /usr/bin/chsh<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rws--x--x 1 root root 5576 Apr 17 12:57 /usr/bin/newgrp<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwxr-sr-x 1 root tty 8392 Apr 17 12:57 /usr/bin/write<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-x--- 1 root squid 14076 Oct 7 14:48 /usr/lib/squid/pinger<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwxr-sr-x 1 root utmp 15587 Jun 9 09:30 /usr/sbin/utempter<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwsr-xr-x 1 root root 5736 Apr 19 15:39 /usr/sbin/usernetctl<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwsr-xr-x 1 root bin 16488 Jul 6 09:35 /usr/sbin/traceroute<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-sr-x 1 root root 299364 Apr 19 16:38 /usr/sbin/sendmail<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-xr-x 1 root root 34131 Apr 16 18:49 /usr/libexec/pt_chown<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-xr-x 1 root root 13208 Apr 13 14:58 /bin/su</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwsr-xr-x 1 root root 52788 Apr 17 15:16 /bin/mount<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwsr-xr-x 1 root root 26508 Apr 17 20:26 /bin/umount<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwsr-xr-x 1 root root 17652 Jul 6 09:33 /bin/ping<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-rwsr-xr-x 1 root root 20164 Apr 17 12:57 /bin/login<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">*-rwxr-sr-x 1 root root 3860 Apr 19 15:39 /sbin/netreport<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">-r-sr-xr-x 1 root root 46472 Apr 17 16:26 /sbin/pwdb_chkpwd<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/bin/chage<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/bin/gpasswd<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/bin/wall<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/bin/chfn<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/bin/chsh<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/bin/newgrp<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/bin/write<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/sbin/usernetctl<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /usr/sbin/traceroute<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /bin/mount<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /bin/umount<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /bin/ping<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# chmod a-s /sbin/netreport<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">你可以用下面的命令查找所有带s位标志的程序:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# find / -type f \( -perm -04000 -o -perm -02000 \) \-exec ls -lg {} \;<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">>; suid-sgid-results<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">把结果输出到文件suid-sgid-results中。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">为了查找所有可写的文件和目录,用下面的命令:</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# find / -type f \( -perm -2 -o -perm -20 \) -exec ls -lg {} \; >; ww-files-results<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# find / -type d \( -perm -2 -o -perm -20 \) -exec ls -ldg {} \; >; ww-directories-results</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">用下面的命令查找没有拥有者的文件:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# find / -nouser -o -nogroup >; unowed-results<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">用下面的命令查找所有的.rhosts文件:<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">[root@deep]# find /home -name .rhosts >; rhost-results<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">建议替换的常见网络服务应用程序<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">WuFTPD<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">WuFTD从1994年就开始就不断地出现安全漏洞,黑客很容易就可以获得远程root访问(Remote Root Access)的权限,而且很多安全漏洞甚至不需要在FTP服务器上有一个有效的帐号。最近,WuFTP也是频频出现安全漏洞。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">它的最好的替代程序是ProFTPD。ProFTPD很容易配置,在多数情况下速度也比较快,而且它的源代码也比较干净(缓冲溢出的错误比较少)。有许多重要的站点使用ProFTPD。sourceforge.net就是一个很好的例子(这个站点共有3,000个开放源代码的项目,其负荷并不小啊!)。一些Linux的发行商在它们的主FTP站点上使用的也是ProFTPD,只有两个主要Linux的发行商(SuSE和Caldera)使用WuFTPD。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">ProFTPD的另一个优点就是既可以从inetd运行又可以作为单独的daemon运行。这样就可以很容易解决inetd带来的一些问题,如:拒绝服务的攻击(denial of service attack),等等。系统越简单,就越容易保证系统的安全。WuFTPD要么重新审核一遍全部的源代码(非常困难),要么完全重写一遍代码,否则WuFTPD必然要被ProFTPD代替。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Telnet<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Telnet是非常非常不安全的,它用明文来传送密码。它的安全的替代程序是OpenSSH。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">OpenSSH在Linux上已经非常成熟和稳定了,而且在Windows平台上也有很多免费的客户端软件。Linux的发行商应该采用OpenBSD的策略:安装OpenSSH并把它设置为默认的,安装Telnet但是不把它设置成默认的。对于不在美国的Linux发行商,很容易就可以在Linux的发行版中加上OpenSSH。美国的Linux发行商就要想一些别的办法了(例如:Red Hat在德国的FTP服务器上(ftp.redhat.de)就有最新的OpenSSH的rpm软件包)。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Telnet是无可救药的程序。要保证系统的安全必须用OpenSSH这样的软件来替代它。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Sendmail<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">最近这些年,Sendmail的安全性已经提高很多了(以前它通常是黑客重点攻击的程序)。然而,Sendmail还是有一个很严重的问题。一旦出现了安全漏洞(例如:最近出现的Linux内核错误),Sendmail就是被黑客重点攻击的程序,因为Sendmail是以root权限运行而且代码很庞大容易出问题。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">几乎所有的Linux发行商都把Sendmail作为默认的配置,只有少数几个把Postfix或Qmail作为可选的软件包。但是,很少有Linux的发行商在自己的邮件服务器上使用Sendmail。SuSE和Red Hat都使用基于Qmail的系统。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">Sendmail并不一定会被别的程序完全替代。但是它的两个替代程序Qmail和Postfix都比它安全、速度快,而且特别是Postfix比它容易配置和维护。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">su<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">su是用来改变当前用户的ID,转换成别的用户。你可以以普通用户登录,当需要以root身份做一些事的时候,只要执行“su”命令,然后输入root的密码。su本身是没有问题的,但是它会让人养成不好的习惯。如果一个系统有多个管理员,必须都给他们root的口令。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">su的一个替代程序是sudo。Red Hat 6.2中包含这个软件。sudo允许你设置哪个用户哪个组可以以root身份执行哪些程序。你还可以根据用户登录的位置对他们加以限制(如果有人“破”了一个用户的口令,并用这个帐号从远程计算机登录,你可以限制他使用sudo)。Debian也有一个类似的程序叫super,与sudo比较各有优缺点。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">让用户养成良好的习惯。使用root帐号并让多个人知道root的密码并不是一个好的习惯。这就是www.apache.org被入侵的原因,因为它有多个系统管理员他们都有root的特权。一个乱成一团的系统是很容易被入侵的。<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">named<span class="Apple-converted-space">?</span>
</span>
<br style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff;"><span class="Apple-style-span" style="color: #555544; font-family: tahoma,'Trebuchet MS',lucida,helvetica,sans-serif; font-size: 18px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 25px; text-align: left; text-indent: 0px; white-space: normal; background-color: #ffffff; display: inline ! important; float: none;">大部分Linux的发行商都解决了这个问题。named以前是以root运行的,因此当named出现新的漏洞的时候,很容易就可以入侵一些很重要的计算机并获得root权限。现在只要用命令行的一些参数就能让named以非root的用户运行。而且,现在绝大多数Linux的发行商都让named以普通用户的权限运行。命令格式通常为:named -u<span class="Apple-converted-space">?</span>
</span>
; -g<span class="Apple-converted-space">?</span>
;<span class="Apple-converted-space">?</span>
<br><br>
INN<span class="Apple-converted-space">?</span>
<br>
在INN的文档中已经明确地指出:“禁止这项功能(verifycancels),这项功能是没有用的而且将被除掉”。大约在一个月前,一个黑客发布了当“verifycancels”生效的时候入侵INN的方法。Red Hat是把“verifycancels”设为有效的。任何setuid/setgid的程序或网络服务程序都要正确地安装并且进行检查以保证尽量没有安全漏洞。<span class="Apple-converted-space">?</span>
<br><br><br><br><br><br>
安全守则<span class="Apple-converted-space">?</span>
<br><br>
1. 废除系统所有默认的帐号和密码。<span class="Apple-converted-space">?</span>
<br>
2. 在用户合法性得到验证前不要显示公司题头、在线帮助以及其它信息。<span class="Apple-converted-space">?</span>
<br>
3. 废除“黑客”可以攻击系统的网络服务。<span class="Apple-converted-space">?</span>
<br>
4. 使用6到8位的字母数字式密码。<span class="Apple-converted-space">?</span>
<br>
5. 限制用户尝试登录到系统的次数。<span class="Apple-converted-space">?</span>
<br>
6. 记录违反安全性的情况并对安全记录进行复查。<br>
7. 对于重要信息,上网传输前要先进行加密。<span class="Apple-converted-space">?</span>
<br>
8. 重视专家提出的建议,安装他们推荐的系统“补丁”。<span class="Apple-converted-space">?</span>
<br>
9. 限制不需密码即可访问的主机文件。<span class="Apple-converted-space">?</span>
<br>
10.修改网络配置文件,以便将来自外部的TCP连接限制到最少数量的端口。不允许诸如tftp,sunrpc,printer,rlogin或rexec之类的协议。<span class="Apple-converted-space">?</span>
<br>
11.用upas代替sendmail。sendmail有太多已知漏洞,很难修补完全。<span class="Apple-converted-space">?</span>
<br>
12.去掉对操作并非至关重要又极少使用的程序。<span class="Apple-converted-space">?</span>
<br>
13.使用chmod将所有系统目录变更为711模式。这样,攻击者们将无法看到它们当中有什么东西,而用户仍可执行。<span class="Apple-converted-space">?</span>
<br>
14.只要可能,就将磁盘安装为只读模式。其实,仅有少数目录需读写状态。<span class="Apple-converted-space">?</span>
<br>
15.将系统软件升级为最新版本。老版本可能已被研究并被成功攻击,最新版本一般包括了这些问题的补救。
发表评论
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LINUX-网卡Bond
2012-02-08 15:22 893网卡bond是通过把多张网卡绑定为一个逻辑网卡,实现本 ... -
Chrome+SwitchySharp+myentunnel+SSH
2012-02-04 17:14 1889? <p style="margin ... -
Java中HashMap排序和遍历 .
2012-02-03 10:29 1953<div id="article_co ... -
/dev/shm放/tmp
2012-02-02 17:14 928呵呵,有时候不懂装懂的人挺搞笑的哈 转http://z ... -
java简单的通用ajax分页方法
2012-02-02 12:44 1799发表一个自己常用的分页的通用代码,实现了ajax分页。 ... -
[转]Cocoa中回调delegate的方法时判断delegate是否已经被释放
2012-01-31 16:58 1100<p>http://pingguohe.n ... -
单一入口应用程序概述
2012-01-11 14:03 683什么是单一入口应用程序? 在解释什么是单一入口应用 ... -
各种常用编译开关位置
2012-01-11 12:54 696vendor\third-party\products ... -
JS合并单元格、JavaScript单元格合并
2011-12-28 14:08 1110<span style="font-f ... -
flex入门
2011-12-28 12:23 876<span style="fon ... -
通过发微博控制电脑的程序源码
2011-12-20 12:29 1289前段时间看群里挺多讨论 微博api,正好前几天看到有个 ... -
由ORM框架设计看到微软与苹果的最大差别
2011-12-20 09:59 1374一不小心加入水 ... -
《南方周末》《南方日报》《新京报》《南方体育》等报纸在线阅读
2011-12-15 11:04 1257我经常到南方报业提供的网址下载他们出版的报纸看,今天突 ... -
java 加密算法 base64
2011-12-14 17:58 900<span style="color: ... -
终于完成一个最重要的任务——找工作
2011-12-14 14:54 630</span></span>& ... -
HTML特殊字符
2011-12-14 10:54 699最近在做某种模拟器上的网页的显示,需要考虑HTML特殊 ... -
01_Android介绍
2011-12-13 10:44 598? <h4 style="margin ... -
2008 ==> 2009
2011-12-13 10:39 603发现时间过的真的很快,这么快,又是新的一年了。特地翻出 ... -
TOMCAT常用优化
2011-12-12 16:04 667<p class="MsoNorm ... -
职场官话
2011-12-12 12:29 563官场充斥着官话,职场也满是官话,可能你没有注意到而已。 ...
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### LAMP(Linux + Apache + MySQL + PHP)基本配置详解 #### 一、LAMP环境简介 LAMP代表Linux(操作系统)、Apache(Web服务器)、MySQL(数据库管理系统)和PHP(服务器端脚本语言)。这套组合在搭建Web应用程序...
【Linux开发环境的建立步骤】 在建立Linux开发环境时,通常会采用一台运行Linux的PC机作为服务器,这个服务器主要用于编译代码并进行传输。在这个环境中,开发者会使用GNU gcc,这是一个强大的开源编译器,它不仅...
本篇文章将详细介绍如何在Mini2440上安装Linux系统,包括必要的分区、Bootloader的选择与安装、Linux内核的烧写以及根文件系统的配置。 1. **分区**: 在进行Linux系统安装前,首先需要对存储设备进行分区。X表示...
9. **硬件配置**:考虑升级硬件,如增加RAM、使用更快的CPU或优化磁盘阵列设置(RAID)以提升性能。 10. **监控和日志分析**:使用`syslog`或`logrotate`进行日志管理和分析,以便及时发现和解决问题。 11. **安全...
- **环境配置**:指导用户如何根据实际需求进行系统配置,包括网络设置、安全加固等步骤。 #### 3. 文件系统与命令行基础 - **文件系统结构**:讲解Linux下的文件组织方式,包括根目录及其子目录的作用和意义。 - *...
本手册将详细介绍 Tivoli Storage Manager 在不同 Linux 平台上的安装步骤和注意事项,以及如何进行基本的配置和管理操作。 #### 二、支持的 Linux 平台 1. **Linux x86_64**:这是最常见的 Linux 平台之一,适合...
### Linux系统挂载NTFS格式移动硬盘的详细指南 在Linux环境下使用NTFS格式的移动硬盘时,...通过以上步骤,即使是在Linux环境下,也能顺利地管理和使用NTFS格式的移动硬盘。这为跨平台的数据交换提供了极大的便利。
- **三、ADSL上网设置**:教导用户如何配置ADSL连接以便在Linux下接入互联网。 - **四、关闭不需要的服务进程**:讲解了如何识别和关闭不必要的后台服务,从而优化系统性能。 - **五、让终端的字体更清晰些**:介绍...
《Linux下Oracle安装配置宝典》是一篇详细指导在Linux环境下安装和配置Oracle数据库的教程。...对于初次接触Oracle安装的用户,详细遵循《Linux下Oracle安装配置宝典》的步骤将有助于顺利完成整个安装配置过程。