How to change the SSH Port in Ubuntu Server

Change the SSH Port in Ubuntu Server

Why change the SSH port?

• Avoid automated scans on port 22
• Improve overall server security
• Reduce brute-force attack attempts

Steps to change the SSH port

1. Edit the SSH configuration

• Connect to your server using the current port:

ssh user@23.175.40.x

• Edit the configuration file:

sudo nano /etc/ssh/sshd_config

• Find the line #Port 22 and change it to:

Port 2222

• Save and exit (CTRL+O, ENTER, then CTRL+X)

2. Allow the new port in the firewall

• If you're using UFW:

sudo ufw allow 2222/tcp

• Check active rules:

sudo ufw status

3. Restart the SSH service

sudo systemctl restart ssh

4. Connect using the new port

• From your SSH client, use:

ssh -p 2222 user@23.175.40.x

Precautions

• Don't close your current session until you're sure the new port works
• You can test from a second terminal just in case

Need help?

If you changed the port and lost access, open a ticket at billing.baires.host and we'll help you restore access.

You can also contact us via social media:

• Instagram: @baires_host
• Discord (active support): https://discord.gg/sazpYmGRbQ