Linux Hint published a tutorial about securing the SSH Server in Ubuntu 20.04.
How to Secure the SSH Server in Ubuntu 20.04 from Basic to Advanced
Whenever you use an SSH server, you must have considered securing it first to save yourselves from any unwanted situation in the longer run. We can never say that a single step will ensure 100% security or a certain step is better than the other. In this article, a very deep insight into the basic and advanced steps for securing an SSH server in Ubuntu 20.04 is provided.
How to Secure the SSH Server in Ubuntu 20.04 from Basic to Advanced – Linux Hint