Install servers and related equipment in a locked, restricted-access room.
If equipment is installed in a rack with a locking door, always lock the rack door until you have to service the components within the rack. Locking the doors also restricts access to hot-plug or hot-swap devices.
Store all spare replacement parts in a locked cabinet. Restrict access to the locked cabinet to authorized personnel.
Periodically, verify the status and integrity of the locks on the rack and the spares cabinet to guard against, or detect, tampering or doors being accidentally left unlocked.
Store cabinet keys in a secure location with limited access.
Restrict access to USB consoles. Devices such as system controllers, power distribution units (PDUs), and network switches can have USB connections. Physical access is a more secure method of accessing a component since it is not susceptible to network-based attacks.
Connect the console to an external KVM to enable remote console access. KVM devices often support two-factor authentication, centralized access control, and auditing. For more information about the security guidelines and best practices for KVMs, refer to the documentation that came with the KVM device.