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Change SSH Port on Debian 10/11

Overview #

In this short tutorial you will learn how to change your SSH port from the default 22 to another port. This is a recommended step during any initial server hardening. Cloudfanatic’s Debian 10 and 11 operating systems do not come with a firewall by default so the process is very straight forward.

Instructions for Ubuntu

Instructions for Almalinux

Changing the SSH Port: #

Edit your ssh configuration file:

nano /etc/ssh/sshd_config
  • Find line: #Port 22
  • Uncomment the line
  • Change 22 to your desired port number
  • Save the file
  • Restart SSH service
systemctl restart ssh

That should be all. Try and ssh into your server on your new port.

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