Enable Root Login via SSH In Ubuntu

 By default, SSH on Ubuntu comes configured in a way that disables the root users log in. This was originally enabled as a security precaution which means that you cannot directly log in as the root user over SSH. However, you can usually get around the need for root ssh login by using the sudo command. In some cases, though it’s just more convenient to get directly logged in as root.

Enable root login over SSH

1. Login to your server as root.
2. As the root user, edit the sshd_config file found in /etc/ssh/sshd_config:vim /etc/ssh/sshd_config
3. Add the following line to the file, you can add it anywhere but it’s good practice to find the block about authentication and add it there.

   PermitRootLogin yes

4. Save and exit the file.
5. Restart the SSH server:
   systemctl restart sshd
   or
   service sshd restart


And that’s it! With the new line added and the SSH server restarted, you can now connect via the root user.

In this instance, you are going to be able to login as the root user utilizing either the password or an ssh key.

When using SSH Keys, you can set the PermitRootLogin value to `without-password` instead of yes. To accomplish this, simply modify the following information noted in step 2 above instead:

PermitRootLogin without-password

This process should work on almost any version of Linux server that the sshd service is installed. If you are using a cPanel server though you can easily control this setting from the WHM interface. In these cases, it’s recommended to modify this setting from your control panel interface.

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