How to disable remote root logins using SSH in linux

For security reasons, it is best to disable remote root logins to a server. This can be done by the following steps.

- SSH into server and login as root.

- navigate to the directory /etc/ssh/sshd_config and open the file sshd_config for editing

- Scroll down the SSH server configuration file and locate the line below:

#PermitRootLogin yes


- Uncomment the line by removing the hash symbol (#), and then change the “yes” to “no”.

PermitRootLogin no


- Save and quit the config file.

- Restart SSH server using the following command at the prompt

/etc/rc.d/init.d/sshd restart

- remote root logins have now been disabled.