Out of nowhere my SSH has stopped logging in. I logged in before the weekend and it was fine. I think I might have ran apt-get update and apt-get upgrade but I can't really remember but it is the only change that would have been made to the server. At the moment I get a "connection refused" message if i try to login. If i change the port it timesout because the firewall blocks all the ports so it seems that SSH service is responding, albeit incorrectly. I have a couple of servers all using the same setup and for security all the IPs are allowed through the firewall to the SSH port and I get the same problem trying to log in through them. I got my server rebooted into rescue mode and the SSH config looked as it should. The server is functioning normal albeit I cannot login to adminster it.