一、命令yum安装
yum -y install vsftpd
1.配置文件在/etc/vsftpd/vsftpd.conf，如果不放心修改可以先做个备份
cp /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.conf.bak
2.创建一个shusheng为ftp用户，并且 为其设置家目录：自定义 我个人设置的是/var/www/html 里面最好有个文件或文本等下做测试
useradd -s /sbin/nologin -d /var/www/html shusheng
定义shusheng密码
passwd shusheng
给家目录上传和修改的权限
chmod o+w /var/www/html
创建chroot_list 路径/et/vsftpd/chroot_list
vi chroot_list
添加shusheng
3.配置/etc/vsftpd/vsftpd.conf文件
anonymous_enable=NO#关闭匿名访问
local_enable=YES#去掉local_enable 的注释，修改为开启
chroot_local_user=YES#限制用户仅能访问自己的主目录
设置用户的主目录：(不设置时，默认为用户的家目录/home/userftp)
local_root=/var/www/html 使用本地用户登录到ftp
这里，local_root表示使用本地用户登录到ftp时的默认目录
允许虚拟用户上传文件
write_enable=YES
anon_upload_enable=YES
允许虚拟用户修改文件名和删除文件的选项
anon_other_write_enable=YES
建立PAM配置文件的时候，当加入修改的两项的时候，其他的要全部注释，否则登录失败
#%PAM-1.0
#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/vm_user account required /lib64/security/pam_userdb.so db=/etc/vsftpd/vm_user
附上vsftpd.conf
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 # # 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
#tcp_wrappers=YES
#userlist_enable=YES
userlist_enable=YES
#ftp_home_dir=yes
#ftpd_full_access=yes
write_enable=YES
anon_umask=022
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_world_readable_only=YES
anon_other_write_enable=YES
download_enable=YES
local_root=/var/www/html
#guest_enable=YES
#guest_username=libai
#user_config_dir=/etc/vsftpd/users
#listen_port=4500
#######################
以上是服务器vsftpd.conf示例
附上只有上传权限的设置
write_enable=YES
anon_umask=022
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_world_readable_only=NO
anon_other_write_enable=NO
download_enable=NO
local_root=/var/www/html/
附上admin设置
write_enable=YES
anon_umask=022
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_world_readable_only=YES
anon_other_write_enable=YES
download_enable=YES
local_root=/var/www/html/
四、重启vsftpd
service vsftpd restart
并关闭防火墙iptables或者做一个允许访问规则
iptables -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 21 -j ACCEPT
关闭centos selinux 本身的安全机制
临时关闭setenforce 0 或者永久关闭需要重启 修改/etc/selinux/config 里面的SELINUX=enforcing 修改为 SELINUX=disabled 重启reboot
