Prevent Root Login on Linux

Scenario:

            Block the root login on Linux Machines through SSH ports.

Solution:

            Run the grep "PermitRoot" /etc/ssh/sshd_config command let you know the status of block / open.

 If the value is no then blocked,

PermitRootLogin no    ==> Can't perform root login thru SSH

PermitRootLogin yes  ==> Can able to perform root login directly through SSH Client / Putty.

Note:

•     Eventhough root account is blocked, you can still login with other account and use su - root command to switch to the root account.
• Still you can use VSphere client to login to the machine using root account.