CentOS中vsftp安装、配置、卸载

1. 安装VSFTP

 
        [root@localhost ~]# yum -y install vsftpd

2. 配置vsftpd.conf文件

[root@localhost ~]# vi /etc/vsftpd/vsftpd.conf

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        # 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=YES 
       
        # 
       
        # 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 lightnear 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 
       
        userlist_enable=YES 
       
        userlist_deny=NO 
       
        local_root=/var/public_root 
       
        tcp_wrappers=YES 
       
        use_localtime=YES

3. 增加FTP帐户

这里设置的账户名为“cent”,密码为“cent”

 
        [root@localhost ~]# useradd cent -s /sbin/nologin 
       
        [root@localhost ~]# passwd cent

4. 编辑user_list文件，允许cent用户访问FTP

 
        [root@localhost ~]# vi /etc/vsftpd/user_list

 
        # vsftpd userlist 
       
        # If userlist_deny=NO,only allow users in this file 
       
        # If userlist_deny=YES (default),never allow users in this file,and 
       
        # do not even prompt for a password. 
       
        # Note that the default vsftpd pam config also checks /etc/vsftpd/ftpusers 
       
        # for users that are denied. 
       
        root 
       
        bin 
       
        daemon 
       
        adm 
       
        lp 
       
        sync 
       
        shutdown 
       
        halt 
       
        mail 
       
        news 
       
        uucp 
       
        operator 
       
        games 
       
        nobody 
       
        cent

5. 建立我们的根目录，并设置访问权限

 
        [root@localhost ~]# mkdir /var/public_root 
       
        [root@localhost ~]# chown -R cent /var/public_root 
       
        [root@localhost ~]# chmod -R 755 /var/public_root

6. 开启vsftpd服务

 
        [root@localhost ~]# service vsftpd start

7.默认开启vsftp服务

 
        [root@localhost var]# chkconfig vsftpd on

centos 卸载vsftpd方法

如果服务器上安装了vsftpd，配置出错需要卸载vsftpd

 
        [root@localhost ~]# rpm -aq vsftpd

vsftpd-2.0.5-16.el5_5.1 #此处是查找vsftpd的返回结果

 
        [root@localhost ~]# rpm -e vsftpd-2.0.5-16.el5_5.1

#用rpm -e 查找结果进行删除就ok了。
warning: /etc/vsftpd/user_list saved as /etc/vsftpd/user_list.rpmsave
warning: /etc/vsftpd/ftpusers saved as /etc/vsftpd/ftpusers.rpmsave #删除时将备份vsftp的用户列表文件。

看下是否卸载了vsftpd，进行stop及start操作：

 
        [root@localhost ~]# /sbin/service vsftpd stop

vsftpd: unrecognized service #找不到vsftpd

 
        [root@localhost ~]# /sbin/service vsftpd start

vsftpd: unrecognized service #找不到vsftpd记住，在卸载vsftpd之前，先停止vsftpd。