How to configure the FTP service in Linux

1. Mount the OS image Disk

[Root @ DSS media] # Mount/dev/CDROM/Media

2. Install the FTP service package

[Root @ DSS server] # ls-lt | grep vsftp
-RW-r -- 1 Root 143517 Nov 17 2010 vsftpd-2.0.5-16.el5_5.1.i386.rpm

[Root @ DSS server] # rpm-IVH vsftpd-2.0.5-16.el5_5.1.i386.rpm

[Root @ DSS server] # rpm-Q vsftpd
Vsftpd-2.0.5-16.el5_5.1

-- Delete a vfsftp package
[Root @ DSS server] # rpm-e vsftpd-2.0.5-16.el5_5.1

3. view the status of vsftpd
[Root @ DSS server] #/etc/rc. d/init. d/vsftpd status
Vsftpd is stopped
[Root @ DSS server] # service vsftpd status
Vsftpd is stopped

4. Start the vsftpd service
[Root @ DSS server] # service vsftpd start
Starting vsftpd For vsftpd: [OK]
[Root @ DSS server] # service vsftpd status
Vsftpd (PID 28433) is running...

[Root @ DSS server] #/etc/rc. d/init. d/vsftpd start
Starting vsftpd For vsftpd: [OK]
[Root @ DSS server] #/etc/rc. d/init. d/vsftpd status
Vsftpd (PID 28468) is running...

5. Stop the vsftpd service
[Root @ DSS server] #/etc/rc. d/init. d/vsftpd stop

[Root @ DSS server] # service vsftpd stop

6. Restart the vsftpd service.
[Root @ DSS server] #/etc/rc. d/init. d/vsftpd restart

[Root @ DSS server] # service vsftpd restart

7. configuration file of vsftpd service

/Etc/vsftpd/ftpusers
/Etc/vsftpd/user_list
/Etc/vsftpd. conf

Specifically,/etc/vsftpd/ftpusers specifies which users cannot access the FTP server. By default, users in/etc/vsftpd/user_list cannot access
The FTP server is only available when userlist_enable = No (yes by default) in/etc/vsftpd. conf.
The options in the vsftpd. conf file are described as follows:

# Example config file/etc/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 CT 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
# 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
# Ftp server can use as a totally isolated and unprivileged user.
# Nopriv_user = ft1_cure
#
# Enable this and the server will recognize 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
# 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
# Users to not chroot ().
# 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
# 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 whith 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

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