Change vsftpd FTP Server Port Number 21

Because of security issues I would like to change the vsftpd server tcp port # 21. How do I configure vsftpd to use another port instead of the default TCP port 21? How to change vsftpd ftp port number in Linux or Unix?

vsftpd, which stands for Very Secure FTP Daemon, is an FTP server under Ubuntu, Fedora Core, Red Hat Enterprise Linux and a number of other distributions. Changing a default port is a good idea. FTP is a common method for allowing remote access to files. Like telnet, the FTP protocol is unencrypted, which means that passwords and other data transmitted during the session can be captured and that the session is vulnerable to hijacking.

Changing vsftp port

All you need to do is edit the configuration file for vsftpd server. The default configuration file is /etc/vsftp/vsftpd.conf or /etc/vsftpd.conf.

First login as root user.

Open the vsftpd.conf file, enter:
# vi vsftpd.conf

Find line that read as follows

Replace port 21 with new port such as 201:

Save and close the file. Please make sure no other service is using port # 201. Finally, restart the vsftpd server:
# /etc/init.d/vsftpd restart
# service vsftpd restart

All ftp client need use the tcp port # 201 while connecting to the ftp server. For example:
$ ftp 201

Posted by: SXI ADMIN

The author is the creator of SXI LLC and a seasoned sysadmin, DevOps engineer, and a trainer for the Linux operating system/Unix shell scripting. Get the latest tutorials on SysAdmin, Linux/Unix and open source topics via RSS/XML feed or weekly email newsletter.