Configuring Root Logins
If you want to give someone permission to login directly to the root login account via Secure Shell, you can define three methods of control in the sshd2_config file:
This will disable all logins with root privileges. To enable root logins with any authentication method, use the following setting:
You can limit the authentication methods by using the following setting:
This allows root logins only when an authentication method other than password is used.