CentOS Linux 5/6: Change OpenSSH Port Number

To change the OpenSSH port number on CentOS Linux 5/6, you need to edit the sshd_config file. Here’s how:

1. Open the sshd_config file:

2. Locate the line that starts with Port:

3. Change the port number to the desired value (e.g., 2222):

4. Save the changes and close the file.
5. Restart the SSH service to apply the changes:

Note: Make sure that the new port number is not blocked by any firewalls or other network security configurations.

After the changes have been applied, you will need to specify the new port number when connecting to the server via SSH. For example:

Replace user with your username and server_ip with the IP address of your server.