How can I test if my SSH is secure
I've just got SSH running for the first time, but I'm not convinced that I have the correct keys installed. I've generated a pair in Putty and copied the public one to my Slack box and entered
ssh-copy-id -i /home/fred/testpub.pub firstname.lastname@example.org
When I use putty to connect, the password the linux box asks for is not the one I entered when making the putty pair, but fred's one from the linux box. I think I'm just confused as to what keys to use where. Is there a good tutorial anyone can recommend for SSH.
Also, is there a way of checking how secure my connection is? It's a bit of blind faith, at the moment, that the whole thing is working correctly. I would rather set a tool onto it that could tell me if my transmissions were secure or not.