Adding Two-Factor (or Multi-Factor) authentication to your server is an easy way of practically eliminating most SSH intrusion attempts.
The aim for this short tutorial is to build on some of the previous basic server security tips and add some small, extra layers of security to your server.
Server security is never about one main thing to protect your server but many little tricks that all add up to help decrease the chances of your server being compromised.
Whilst changing your SSH port doesn't directly provide extra security on your server, it's still a good idea to help reduce automated break in attempts.
