Passing along an interesting read by Tatu Ylonen, the inventor of the original SSH program and the SSH 1 protocol, on how it’s not a coincidence that SSH got assigned to port number 22 and how scared he was of the [in]formal process of allocating a port number.

If you’re scared of leaving your SSH server unprotected today – almost 22 years later, you can get to sleep a little easier by installing SSHGuard.