Victor Subervi wrote:
What I was interested in doing was to make it impossible for root to login directly, but rather enable other users to login and then su to root. So I edited /etc/ssh/sshd_config to read: #PermitRootLogin no (It was the dir I didn't know.) It initially said "yes", but it was and is commented. How is it that I then and still can login directly as root? Is reboot necessary?
It's not going to have any effect unless you remove the # sign. You don't need to reboot, but do a 'service sshd restart'.