How to Modify SSH to Use a Port Other than 22


A simple, but very effective, step you can take to enhance your server's security is to update the port SSH uses to a port other than 22 (the default). To do this, login to your VPS as root and follow these steps:


1. Open the SSH config file with the vi editor:

# vi /etc/ssh/sshd_config


2. Press the "A" key to enter editing mode. Look for this line, near the top of the file:

#Port 22


3. Uncomment the line (remove the pound symbol) and change the port value to any number of your choosing:

Port 6486


4. Press ESC, then type :wq (colon-w-q) and press enter to save and exit the file.

5. If you are running a firewall, ensure that the port you selected is open.

6. Restart the SSH service:

(CentOS) # service sshd restart

(Debian) # /etc/init.d/ssh restart


You will now access SSH through the new port, like this:

# ssh root@ -p 6486


  • payment
  • 0 Users Found This Useful
Was this answer helpful?

Related Articles

How to close an open DNS resolver - Linux

Locate the BIND configuration file within the operating system. The BIND configuration file is...

How to Optimize MySQL with MySQLTuner

MySQLTuner is a script that will assess MySQL performance and recommend steps to maximize...

How to List All Open/Listening Ports

If you find yourself needing to check all open/listening ports that your server is using (a good...

How to Install ConfigServer Firewall (CSF)

ConfigServer Firewall, or CSF, is a common Linux security suite. Log in to your VPS as the root...

How to Check VPS Memory/RAM Usage with SSH

There are a few tools built-in to most Linux distros for gauging and fine-tuning your server's...