环境：CentOS_6.8_x86_64
要求：仅允许虚拟用户登录vsftpd服务器，并且有增删查改的权限，禁止系统本地用户登录、禁止匿名用户登录
第一步、yum安装vsftpd
# yum -y install vsftpd
# yum -y install db4-utils
第二步、建立虚拟用户
#vim /etc/vsftpd/login.txt
user1
password1
user2
password2
user3
password3
格式为第一行为用户名，第二行为密码，然后类推
第三步、建立db数据库，同时只有root用户才能读写
# db_load -T -t hash -f /etc/vsftpd/login.txt /etc/vsftpd/vsftpd_login.db
# chmod 777 /etc/vsftpd/vsftpd_login.db
配置pam文件
# vim /etc/pam.d/vsftpd?(64位系统)
将原来内容注释掉：
# session optional pam_keyinit.so force revoke
# auth required pam_listfile.so item=user sense=deny file=/etc/vsftpd/ftpusers onerr=succeed
# auth required pam_shells.so
# auth include password-auth
# account include password-auth
# session required pam_loginuid.so
# session include password-auth
auth required /lib64/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
account required /lib64/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
# vim /etc/pam.d/vsftpd (32位系统)
将原来内容注释掉：
#session optional pam_keyinit.so force revoke
#auth required pam_listfile.so item=user sense=deny file=/etc/vsftpd/ftpusers onerr=succeed
#auth required pam_shells.so
#auth include password-auth
#account include password-auth
#session required pam_loginuid.so
#session include password-auth
auth required /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
account required /lib/security/pam_userdb.so db=/etc/vsftpd/vsftpd_login
第四步、建立虚拟用户对应的系统真实用户
useradd –d /home/www –s /sbin/nologin vm
chmod 700 /home/www
chown -R vm:vm /home/www
第五步、修改配置文件
# cp /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.conf.bak
# vim vsftpd.conf
（具体配置文件讲解此处省略，最终修改的配置文件如下）:
# 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=300
#
# 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=NO
# (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=NO
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=10021
#
# 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
tcp_wrappers=YES
guest_enable=YES
guest_username=vm
anon_world_readable_only=NO
anon_other_write_enable=YES
pasv_min_port=10051
pasv_max_port=10060
[root@vm vsftpd]#
第六步、防火墙配置
# iptables -A INPUT -p tcp -m tcp --dport 10021 -j ACCEPT
# iptables -A INPUT -p tcp -m tcp --dport 20 -j ACCEPT
# iptables -A INPUT -p tcp -m tcp --dport 10051:10060 -j ACCEPT
# service iptables save
# service iptables restart
第七步、重启vsftpd服务，客户端用虚拟用户登录验证
# service vsftpd start
本文出自 “技术成就梦想” 博客，请务必保留此出处http://20145520.blog.51cto.com/9112173/1912063
原文地址：http://20145520.blog.51cto.com/9112173/1912063
