In this article, I will show you how to change SSH Port in Ubuntu 20.04 for your server’s security. I will make 43030 the new SSH Port.
Open New SSH Port
Please note that it is crucial to know if you have Firewall installed (in most cases, I would say “yes”), you must add a rule to allow new SSH port! Otherwise, you won’t be able to use SSH to connect to your Ubuntu server.
You can do so by running the following command:
sudo ufw allow 43030/tcp
Change SSH Port by modifying sshd_config
First, we are going to open sshd_config file with nano.
You will find a line of codes:
Change the code to the following (unmute and change port):
And then we are going to restart SSH server so that the new config is in effective:
systemctl restart sshd
Connect to Your Server with the new port
You can run the following command with option p to connect to your server:
ssh root@your_id_or_hostname -p 43030