1、安装vsftpd
yum install vsftpd
按Y回车，系统自动安装
/etc/init.d/vsftpd start #启动vsftpd
chkconfig vsftpd on #设置开机时自动运行
2、配置vsftp服务器
配置文件说明：
/etc/vsftpd/vsftpd.conf vsftpd的核心配置文件
/etc/vsftpd/ftpusers 用于指定哪些用户不能访问FTP服务器
/etc/vsftpd/user_list 指定允许使用vsftpd的用户列表文件
/etc/vsftpd/vsftpd_conf_migrate.sh 是vsftpd操作的一些变量和设置脚本
/var/ftp/ 默认情况下匿名用户的根目录
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配置/etc/vsftpd/vsftpd.conf
配置前先备份
cp /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.conf.bak
vi /etc/vsftpd/vsftpd.conf #配置
#mple 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=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=NO # # 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=NO #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 gamedog 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 listen_port=21 pam_service_name=vsftpd userlist_enable=YES tcp_wrappers=YES chroot_local_user=YES guest_enable=YES guest_username=www user_config_dir=/etc/vsftpd/vconf virtual_use_local_privs=YES pasv_min_port=6000 pasv_max_port=6010 accept_timeout=5 connect_timeout=1 use_localtime=YES
3、
编辑虚拟用户名单文件：（第一行账号，第二行密码，注意：不能使用root做用户名，系统保留）
vi /etc/vsftpd/virtusers
web
123456
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4、生成虚拟用户数据文件：
yum install db4* 命令安装
db_load -T -t hash -f /etc/vsftpd/virtusers /etc/vsftpd/virtusers.db
chmod 600 /etc/vsftpd/virtusers.db #设定PAM验证文件，并指定对虚拟用户数据库文件进行读取=======================================================================
5、在/etc/pam.d/vsftpd的文件头部加入以下信息（在后面加入无效）
修改前先备份 cp /etc/pam.d/vsftpd /etc/pam.d/vsftpd.bak
vi /etc/pam.d/vsftpd
auth sufficient /lib64/security/pam_userdb.so db=/etc/vsftpd/virtusers
account sufficient /lib64/security/pam_userdb.so db=/etc/vsftpd/virtusers
6、新建一个系统用户www，用户家目录为/home/www, 用户登录终端设为/bin/false(即使之不能登录系统)
useradd www -d /home/wwwroot -s /bin/nologin
chown www:www /home/wwwroot -R
7、建立虚拟用户个人Vsftp的配置文件
mkdir /etc/vsftpd/vconf
cd /etc/vsftpd/vconf
touch web #这里创建三个虚拟用户配置文件
vi web #编辑用户web1配置文件，其他的跟这个配置文件类似
local_root=/home/www/web/
write_enable=YES
anon_world_readable_only=NO
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
8、配置防火墙
vi /etc/sysconfig/iptables
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 6000:6010 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
/etc/init.d/iptables restart
9、selinux配置:
setsebool -P ftpd_disable_trans 1
6.0以后
setsebool allow_ftpd_full_access 1
setsebool allow_ftpd_use_cifs 1
setsebool allow_ftpd_use_nfs 1
setsebool -P ftp_home_dir 1
setsebool httpd_enable_ftp_server 1
setsebool tftp_anon_write 1
service vsftpd restart
10、重启vsftpd服务器
/etc/init.d/vsftpd restart