1. Installing VSFTP
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[[email protected] ~]# yum -y install vsftpd |
2. Configuring the Vsftpd.conf File
[Email protected] ~]# 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 parameterxferlog_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_filexferlog_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=YESascii_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=YESpam_service_name=vsftpduserlist_enable=YESuserlist_deny=NOlocal_root=/var/public_roottcp_wrappers=YESuse_localtime=YES |
3. Add an FTP account
The account set here is called "cent" and the password is "cent"
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[[email protected] ~]# useradd cent -s /sbin/nologin[[email protected] ~]# passwd cent |
4. Edit the user_list file to allow cent users to access the FTP
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[[email protected] ~]# vi /etc/vsftpd/user_list |
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# 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.rootbindaemonadmlpsyncshutdownhaltmailnewsuucpoperatorgamesnobodycent |
5. Build our root directory and set access permissions
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[[email protected] ~]# mkdir /var/public_root[[email protected] ~]# chown -R cent /var/public_root[[email protected] ~]# chmod -R 755 /var/public_rootChown-r Cent.cent/var/public_root |
6. Turn on VSFTPD service
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[[email protected] ~]# service vsftpd start |
7. The VSFTP service is turned on by default
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[[email protected] var]# chkconfig vsftpd on |
CentOS Offload Vsftpd method
If VSFTPD is installed on the server, the configuration error requires uninstalling VSFTPD
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[[email protected] ~]# rpm -aq vsftpd |
vsftpd-2.0.5-16.el5_5.1 #此处是查找vsftpd的返回结果
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[[email protected] ~]# rpm -e vsftpd-2.0.5-16.el5_5.1 |
#用rpm-E Search result is OK to delete.
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.
See if VSFTPD is uninstalled, stop and start:
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[[email protected] ~]# /sbin/service vsftpd stop |
Vsftpd:unrecognized Service #找不到vsftpd
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[[email protected] ~]# /sbin/service vsftpd start |
Vsftpd:unrecognized service #找不到vsftpd记住, stop vsftpd before uninstalling VSFTPD.
VSFTP installation, configuration, uninstallation in CentOS
