Red Hat Linux (RHEL) 5/6: Change OpenSSH Port Number

by

To change the OpenSSH port number in Red Hat Enterprise Linux (RHEL) 5/6, you can modify the SSH daemon’s configuration file, which is located at “/etc/ssh/sshd_config”.

Here’s how you can change the OpenSSH port number:

  1. Open the “/etc/ssh/sshd_config” file using a text editor:
sudo vi /etc/ssh/sshd_config
  1. Find the line that starts with “Port” and change the port number to the desired value:
Port 22

Replace “22” with the desired port number. The default value is 22, but you can choose any unused port number between 1025 and 65535.

  1. Save the changes to the file and exit the text editor.
  2. Restart the SSH daemon to apply the changes:
sudo service ssh restart

After restarting the SSH daemon, you can use the new port number to connect to the server via SSH. For example:

ssh user@server -p newport

Replace “user” with the username for the server, “server” with the hostname or IP address of the server, and “newport” with the new port number.

Leave a Comment