1 查看系统是否已经安装vsftpd
rpm -qa | grep vsftpd
如果已经安装 用命令 rpm -e ssss 卸载
2 安装 vsftpd
yum -y install vsftpd
chkconfig vsfptd on ## 设置开机启动
service vsftpd start ## 启动服务
3 新增ftp的用户
useradd -g ftp -M -d /path -s /sbin/nologin ftp_user
######
-g 表示所属用户组
-M 表示不设置它的主目录
-d 表示设置ftp登录初始化的路径
-s /sbin/nologin 表示不可以用来系统登录
######
passwd ftp_user ##设置 用户的登录密码
4 vsftpd 配置文件修改
# 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).
# 是否允许匿名登录 anonymous_enable=NO # # Uncomment this to allow local users to log in.
######允许本地用户登录 local_enable=YES # # Uncomment this to enable any form of FTP write command.
＃＃＃＃＃＃ 本地用户的写权限 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)
＃＃＃＃＃＃ 使用FTP的本地文件权限,默认为077 一般设置为022 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
# 激活上传/下载的日志 xferlog_enable=YES # # Make sure PORT transfer connections originate from port 20 (ftp-data).
# 启用FTP数据端口的数据连接 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
# 日志文件路径设置 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
# 使用标准的日志格式 xferlog_std_format=YES # # You may change the default value for timing out an idle session.
# 用户空闲超时,单位秒 idle_session_timeout=600 # # You may change the default value for timing out a data connection.
# 数据连接空闲超时,单位秒 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().
###### 禁止ftp用户连接以后切换目录 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=NO # # 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
###### 该项参数配置参考如下说明 userlist_enable=YES userlist_deny=NO
###### tcp_wrappers=YES
###### ftp连接的端口号 listen_port=2121
1 userlist_enable和userlist_deny两个选项联合起来针对的是：本地全体用户（除去ftpusers中的用户）和出现在user_list文件中的用户以及
不在在user_list文件中的用户这三类用户集合进行的设置。 2 当且仅当userlist_enable=YES时：userlist_deny项的配置才有效，user_list文件才会被使用；
当其为NO时，无论userlist_deny项为何值都是无效的，本地全体用户（除去ftpusers中的用户）都可以登入FTP 3 当userlist_enable=YES时，userlist_deny=YES时：
user_list是一个黑名单，即：所有出现在名单中的用户都会被拒绝登入； 4 当userlist_enable=YES时，userlist_deny=NO时：
user_list是一个白名单，即：只有出现在名单中的用户才会被准许登入(user_list之外的用户都被拒绝登入)；另外需要特别提醒的是：
使用白名单后，匿名用户将无法登入！除非显式在user_list中加入一行：anonymous
4 防火墙新增 开放ftp的端口
-A INPUT -m state --state NEW -m tcp -p tcp --dport 2121 -j ACCEPT
重启防火墙
关闭 selinux
5 重启相对应的服务 测试连接