Console-level access over the network is convenient because it enables remote diagnosis of boot-up errors experienced before network services are started in the boot process
However, this creates a new path for intruders to break in
You must construct more than one layer of authentication before presenting the login prompt and must also allow only a few and necessary users the capability to go beyond these layers
These users must be forced to authenticate themselves to a central login server, which should be the only machine having direct access to the consoles