Information
The PermitRootLogin parameter specifies if the root user can log in using ssh(1). The
default is no.
*Rationale*
Disallowing root logins over SSH requires server admins to authenticate using their own
individual account, then escalating to root via sudo or su. This in turn limits opportunity for
non-repudiation and provides a clear audit trail in the event of a security incident
Solution
Edit the /etc/ssh/sshd_config file to set the parameter as follows-PermitRootLogin no