I was recently researching the latest guidance on securing OpenSSH and came across a web page on a popular site espousing that the easiest way to protect OpenSSH is to define a login banner. While a login banner is useful, especially in a enterprise setting, it’s useless for securing SSH. So, here is my recipe for securing OpenSSH. While testing these, ALWAYS keep a connection open. It’s very easy to break something and if you don’t already have an open connection, you will have successfully locked yourself out.