6.5 配置vsftpd
1. 下载vsftpd:
#yum –y install vsftpd
2. 关闭iptables
查看防火墙状态：/etc/init.d/iptables status
关闭：service iptables stop 或者 /etc/init.d/iptables stop
每次开机自动关闭:
chkconfig --level 35 iptables off
3. 关闭SELinux,
查看selinux状态：
[root@localhost ~]# /usr/sbin/sestatus –v
/usr/sbin/setenforce 0 #使SELinux工作模式变成permissive模式
/usr/sbin/setenforce 1 #使SELinux工作模式变成enforcing模式
这样就可以实时控制SELinux的启用和不启用了。
三个参数介绍介绍
- enforcing — The SELinux security policy is enforced.
- permissive — The SELinux system prints warnings but does not enforce policy.
- disabled — SELinux is fully disabled. SELinux hooks are disengaged from the kernel and the pseudo-file system is unregistered.
永久关闭SELinux
编辑/etc/selinux/config，找到SELINUX 行修改成为：SELINUX=disabled:
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
# targeted - Only targeted network daemons are protected.
# strict - Full SELinux protection.
SELINUXTYPE=targeted
重启系统。
4. 配置vsftpd.conf文件
# 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
#
# 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_local_user= YES
#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 with two configuration files.
# Make sure, that one of the listen options is commented!!
#listen_ipv6= YES
pam_service_name = vsftpd
userlist_enable= YES
userlist_deny= NO
local_root=/var/ public_root
tcp_wrappers= YES
use_localtime=YES
#
# 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
#
# 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_local_user= YES
#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 with two configuration files.
# Make sure, that one of the listen options is commented!!
#listen_ipv6= YES
pam_service_name = vsftpd
userlist_enable= YES
userlist_deny= NO
local_root=/var/ public_root
tcp_wrappers= YES
use_localtime=YES
5。 编辑user_list文件，允许cent用户访问FTP
[root@localhost ~]#
vi /etc/vsftpd/
user_list
# 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
cent
# 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
news
uucp
operator
games
nobody
cent
6. 共享目录权限配置，启动服务
[root@localhost ~]#
mkdir /var/
public_root
[root@localhost~]# chown -R cent /var/ public_root
[root@localhost~]# chmod -R 755 /var/ public_root [root@localhost~ ]# service vsftpd start
Starting vsftpd for vsftpd: [ OK ]
[root@localhost var]# chkconfig vsftpd on
[root@localhost~]# chown -R cent /var/ public_root
[root@localhost~]# chmod -R 755 /var/ public_root [root@localhost~ ]# service vsftpd start
Starting vsftpd for vsftpd: [ OK ]
[root@localhost var]# chkconfig vsftpd on
