How to secure SSH?
It is 2020, and we can say for sure, that ssh-server  is still one of the most popular services on Linux systems. During various meetings, I was often asked: How to secure SSH? Even though this question seems trivial, it is not. There are a lot of things to remember to accomplish well-designed service security. Secure shell is used not only for a remote-shell, per se. Many other technologies depend on it, for various reasons. I have decided to answer the above question once and forever, and maintain the freshness of this answer, so that you can always refer to this document, as an up-to…Continue reading