yum install vsftpd

 修改/etc/vsftpd/vsftpd.conf配置文件

# 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=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=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

listen_port=4500

pasv_enable=YES

pasv_min_port=20103

pasv_max_port=30103

# 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

guest_enable=YES

guest_username=nginx

pam_service_name=vsftpd

virtual_use_local_privs=NO

user_config_dir=/etc/vsftpd/vsftpd_user_conf

userlist_deny=NO

tcp_wrappers=NO

use_localtime=YES

 

配置虚拟用户：

vi /etc/vsftpd/vftpuser.txt 

添加虚拟用户名和密码，一行用户名，一行密码。例如

vi /etc/vsftpd/vftpuser.txt

zhangsan

123456

建立数据库文件并设置文件属性

首先查看系统有没有安装生成口令认证文件所需的软件db4-utils

 rpm –qa | grep db4-utils

 rpm –ivh db4-utils-4.3.29-9.fc6.i386.rpm

db_load –T –t hash –f /etc/vsftpd/vftpuser.txt /etc/vsftpd/vftpuser.db 

chmod 600 /etc/vsftpd_login.db

编辑vsftpd的PAM认证文件

vi /etc/pam.d/vsftpd 

将里面其他的都注释掉，添加下面这两行：

auth required /lib/security/pam_userdb.so db=/etc/vsftpd/vftpuser

account required /lib/security/pam_userdb.so db=/etc/vsftpd/vftpuser

（注意64位系统将lib改为lib64）

建立本地映射用户并设置宿主目录权限（我们暂时可用nginx用户） 

#useradd –d /home/wwwroot –s /sbin/nologin nginx

#chmod 700 /home/wwwroot

创建虚拟用户配置文件目录：

mkdir vsftpd_user_conf （该目录名字可以任意取，但必须与vsftpd.conf中的user_config_dir=/etc/vsftpd/vsftpd_user_conf相同）

在该目录里编辑与添加虚拟用户名相同的文件

vi zhangsan

local_root=/home/wwwroot(该用户的目录)

virtual_use_local_privs=YES

write_enable=YES

anon_mkdir_write_enable=YES

在user_list中添加创建的本地映射用户，为了安全可以删除其他用户

开端口，关闭selinux（vi /etc/selinux/config disable然后运行命令setenforce 0）