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linux FTP配备详解

2012-08-17 
linux FTP配置详解linux FTP配置详解# recommended!#chown_uploadsYES#chown_usernamewhoever## You may

linux FTP配置详解

linux FTP配置详解

# 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

更多信息请参考:http://ming228.blog.51cto.com/421298/112083作者:Leo Chin出处:http://www.cnblogs.com/hnrainll/本博客文章,大多系网络中收集,转载请注明出处

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