vsftpd linux系统ftp服务器安装配置

安装vsftp

CentOS

# yum install vsftpd

Rpm

rpm -ivh vsftpd-2.0.5-12.el5.i386.rpm

服务

# chkconfig vsftpd on

auto on

chkconfig --level 35 vsftpd on

# service vsftpd start/stop/restart

Firewall

# vi /etc/sysconfig/iptables

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT

配置

# vi /etc/vsftpd/vsftpd.conf

平时经常要架设个简单的ftp服务器，用来传一些文件，只要匿名用户可以上传和修改就可以了。下面是一些相关的配置，这样的ftp只需要修改几个地方就ok了。
anonymous_enable=YES
write_enable=YES
local_umask=022
anon_upload_enable=YES      #容许匿名用户上传文件
anon_mkdir_write_enable=YES     #容许匿名用户建立目录
anon_other_write_enable=YES      #容许匿名用户除了新建和上传外的其他权限，如：删除、更名。
主要是这几条，其他的基本不用动。
然后再在/var/ftp下面建立一个匿名用户有足够权限的目录：
cd /var/ftp
mkdir upload
chmod 777 upload
这样就可以实现匿名用户可以上传，修改和删除的功能了。
还有一些有用的设置，在这里记录一下：
chroot_list_enables=YES
chroot_list_file=/etc/vsftpd/chroot_list
#将某些用户所定在自家目录中，用户名在chroot_list中记录，格式：每行一用户。
pasv_enable=YES
pasv_min_port=5000
pasv_max_port=6000
#打开ftp被动连结，并设置最小、最大端口。
user_config_dir=/etc/vsftpd/userconf
#定义用户个人配置文件所在目录。
#定义了这句就要在userconf目录中建立以用户名命名的文件，这就是这个用户的配置文件。其中加入一条local_root=/home/ftp为指定用户登陆目录，local_max_rate=80000 设置此用户的最大数据传输速度为80KBytes/s
setproctitle_enable=YES
#将所有连接也不同的进程体现出来。

local_umask和anon_umask

umask是unix操作系统的概念，umask决定目录和文件被创建时得到的初始权限
umask = 022 时，新建的目录 权限是755，文件的权限是 644
umask = 077 时，新建的目录 权限是700，文件的权限时 600
vsftpd的local_umask和anon_umask借鉴了它
默认情况下vsftp上传之后文件的权限是600，目录权限是700
想要修改上传之后文件的权限，有两种情况
如果使用vsftp的是本地用户
则要修改配置文件中的 local_umask 的值
如果使用vsftp的是虚拟用户
则要修改配置文件中的 anon_umask 的值

本人的配置：

# Example config file /etc/vsftpd/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=YES
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
local_umask=022
anon_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
anon_upload_enable=YES
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES

#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# The target log file can be vsftpd_log_file or xferlog_file.
# This depends on setting xferlog_std_format parameter
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# The name of log file when xferlog_enable=YES and xferlog_std_format=YES
# WARNING - changing this filename affects /etc/logrotate.d/vsftpd.log
#xferlog_file=/var/log/xferlog
#
# Switches between logging into vsftpd_log_file and xferlog_file files.
# NO writes to vsftpd_log_file, YES to xferlog_file
xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd/banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
#chroot_list_enable=YES
# (default follows)
#chroot_list_file=/etc/vsftpd/chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
#
# When "listen" directive is enabled, vsftpd runs in standalone mode and
# listens on IPv4 sockets. This directive cannot be used in conjunction
# with the listen_ipv6 directive.
listen=YES
#
# This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
# sockets, you must run two copies of vsftpd whith two configuration files.
# Make sure, that one of the listen options is commented !!
#listen_ipv6=YES

pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES