Linux server normally or default use 22 port for SSH access. SSH is one of the most popular communication protocols on the Internet. It's widely used by developers, webmasters, and sysadmins. It allows you to gain remote access to your new Cloud or Dedicated box in just seconds using an encrypted communication channel.
Today I will show how to change ssh port of linux server or cPanel server. SSH comes listening on port 22, which is widely known among attackers and security tools/port scanners that launch brute force attacks against it. While this is considered security by obscurity, it helps to eliminate lots of noise on port 22.
Login your SSH using your server password
Run this command : nano -w /etc/ssh/sshd_config
You will see that 22 port is there just replace it
For example 1255
Then save it and exit.
Then run this command: service sshd restart
systemctl restart sshd
This is one of the oldest and most popular ways to obscure the SSH service.