I have a new dedicated server, which I currently access with username and password over ssh. I have not yet set up an ssh key. I am just looking into it now.
So this is a new server with ubuntu freshly installed, is it normal that the /etc/ssh/ directory already has ssh_host_ecdsa_key and ssh_host_rsa_key files on it? I can also see.pub files for these as well.
Does this mean whoever set up the server can access it using those key files? I want to be the only person who can log in to my server.
I am not an experienced linux user, still trying to learn.