I just installed Ubuntu Server on a VPS.
To configure the server I'm reading the Ubuntu Server Guide. But the Ubuntu Server Guide doesn't tells me everything.
E.g. The Ubuntu Server Guide doesn't tell me about how to secure SSH, which is, in my opinion, an important thing to do after installation of a server.
I know that I've to secure SSH access, but I might forget things to configure. Because I don't know what I don't know.
Does a complete guide exists which tells me which important things I've to after installing Ubuntu server? If not, can anyone tell me those things?