FTP相关配置文件说明

yanhuanhero

　　其相关配置文件有/etc/vsftpd/vsftpd.conf, /etc/vsftpd.ftpusers, /etc/vsftpd.user_list,在配置FTP服务器时,主要是修改这些文件中的相关语句.
　　1.vsftpd.conf文件说明
　　# 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//是否允许anonymous登录FTP服务器,默认是允许的.
　　#
　　# Uncomment this to allow local users to log in.
　　local_enable=YES //是否允许本地用户登录FTP服务器,默认是允许
　　#
　　# Uncomment this to enable any form of FTP write command.
　　write_enable=YES //是否允许用户具有在FTP服务器文件中执行写的权限,默认是允许
　　#
　　# 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 //设置本地用户的文件生成掩码为022,默认是077
　　#
　　# 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 //是否允许匿名账户在FTP服务器中创建目录
　　#
　　# Activate directory messages - messages given to remote users when they
　　# go into a certain directory.
　　dirmessage_enable=YES //激活目录信息,当远程用户更改目录时,将出现提示信息
　　#
　　# Activate logging of uploads/downloads.
　　xferlog_enable=YES //启用上传和下载日志功能
　　#
　　# Make sure PORT transfer connections originate from port 20 (ftp-data).
　　connect_from_port_20=YES //启用FTP数据端口的连接请求
　　#
　　# 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
　　#
　　# You may override where the log file goes if you like. The default is shown
　　# below.
　　#xferlog_file=/var/log/vsftpd.log //设置日志文件的文件名和存储路径,这是默认的
　　#
　　# If you want, you can have your log file in standard ftpd xferlog format
　　xferlog_std_format=YES//是否使用标准的ftpd xferlog日志文件格式
　　#
　　# You may change the default value for timing out an idle session.
　　#idle_session_timeout=600 //设置空闲的用户会话中断时间,默认是10分钟
　　#
　　# You may change the default value for timing out a data connection.
　　#data_connection_timeout=120//设置数据连接超时时间,默认是120秒.
　　#
　　# 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 turning on ascii_download_enable enables malicious remote parties
　　# to consume your I/O resources, by issuing the command "SIZE /big/file" in
　　# ASCII mode.
　　# 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//是否允许使用ASCII格式来上传和下载文件
　　#
　　# You may fully customise the login banner string:
　　#ftpd_banner=Welcome to blah FTP service.//在FTP服务器中设置欢迎登录的信息.
　　#
　　# 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//如果希望用户登录后不能切换到自己目录以外的其它目录,需要设置该项,如果设置chroot_list_enable=YES,那么只允许/etc/vsftpd.chroot_list中列出的用户具有该功能.如果希望所有的本地用户都执行者chroot,可以增加一行:chroot_local_user=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 //设置PAM认证服务的配置文件名称,该文件存放在/etc/pam.d/目录下.
　　userlist_enable=YES //用户列表中的用户是否允许登录FTP服务器,默认是不允许
　　#enable for standalone mode
　　listen=YES //使vsftpd处于独立启动模式
　　tcp_wrappers=YES //使用tcp_wrqppers作为主机访问控制方式
　　2.vsftpd.ftpusers文件说明
　　这个文件是用来记录"不允许"登录到FTP服务器的用户,通常是一些系统默认的用户.
　　下面是该文件中默认的不允许登录的名单:
　　# Users that are not allowed to login via ftp
　　root //默认情况下,root和它以下的用户是不允许登录FTP服务器的.可以将不允许登录的用户添加到这里来.但切记每个用户都要单独占用一行.
　　bin
　　daemon
　　adm
　　lp
　　sync
　　shutdown
　　halt
　　mail
　　news
　　uucp
　　operator
　　games
　　nobody
　　3.vsftpd.user_list文件说明
　　其实它的内容跟上面那个文件内容一样,只是在系统对文件vsftpd.conf进行检测时,会检测到"userlist_deny=YES",因此这个文件必须存在.下面是这个文件的内容.
　　# vsftpd userlist
　　# If userlist_deny=NO, only allow users in this file
　　# If userlist_deny=YES (default), never allow users in this file, and
　　# do not even prompt for a password.
　　# Note that the default vsftpd pam config also checks /etc/vsftpd.ftpusers
　　# for users that are denied.
　　root
　　bin
　　daemon
　　adm
　　lp
　　sync
　　shutdown
　　halt
　　mail
　　news
　　uucp
　　operator
　　games
　　nobody
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