linux中配置ftp-vsftp

利用unix自带工具—vsftp，创建一个不允许匿名访问的ftp，实现上传下载文件的功能，并且指定名用户username可以登陆,限制访问人数。

1． 启动vsftpd

# /etc/init.d/vsftpd start

2． 创建系统用户

# adduser username -d /home/username

       给用户设置密码

        # passwd username

3． 编辑/etc/vsftpd/vsftpd.conf文件

# vi /etc/vsftpd/vsftpd.conf

# Allow anonymous FTP?

anonymous_enable=NO

 

# 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

 

# 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=NO

 

# Activate directory messages - messages given to remote users when they

# go into a certain directory.

dirmessage_enable=YES

 

# Activate logging of uploads/downloads.

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=username

# You may override where the log file goes if you like. The default is shown

# below.

xferlog_file=/var/log/vsftpd.log

 

# If you want, you can have your log file in standard ftpd xferlog format

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

 

# These ASCII options are split into upload and download because you may wish

# to enable ASCII uploads (to prevent uploaded scripts etc. from breaking),

# without the DoS risk of SIZE and ASCII downloads. ASCII mangling should be

# on the client anyway..

ascii_upload_enable=YES

ascii_download_enable=YES

 

# You may fully customise the login banner string:

ftpd_banner=Welcome to fate8866 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

 

pam_service_name=vsftpd

 

# If enabled, vsftpd will load a list of usernames, from the filename given by userlist_file. If a

user tries to log in using a name in this file, they will be denied before they are asked

for a password.

userlist_enable=YES

 

# If you set this setting to NO, then users will be denied login unless they are explicitly listed in the file specified by userlist_file. When login is denied, the denial is issued before the user is asked for a password.

userlist_deny=NO

 

#enable for standalone mode

listen=YES

 

tcp_wrappers=YES

 

max_clients=5

 

4. 将用户名username填入user_list文件，并且把其他用户名全部删除。

    # vi user_list

 

5. 重新启动vsftp

   # /etc/init.d/vsftpd restart