Disable Root Login On A Server

For security reasons its neccessary to disable the root user login on servers. Just look at /var/log/auth.log to see who tries to login.

Add new user

adduser <name>
usermod -aG sudo <name>

Test login with <name>

Disable root login

sudo vim /etc/ssh/sshd_config

Replace PermitRootLogin yes with PermitRootLogin no.

Restart sshd via sudo service sshd restart