To enable SSH login for a root user on Debian Linux system you need to first configure SSH server. Open /etc/ssh/sshd_config
and change the following line:
FROM: PermitRootLogin without-password TO: PermitRootLogin yes
Once you made the above change restart your SSH server:
# /etc/init.d/ssh restart [ ok ] Restarting ssh (via systemctl): ssh.servi