D3-PEH Physical Enclosure Hardening

Physical changes to a computer enclosure which reduce the ability for agents or the environment to affect the contained computer system.

How it works System designers or operators make physical changes to a computer enclosure which reduce the ability for agents or the environment to affect the contained computer system. These additions to the enclosure may be of various materials to reduce the effects of heat, gases, vibration, or agent access. Considerations • Use asset inventory tools to track physical equipment and monitor both people and devices for access control. • Consider relevant regulations to ensure enclosures are in compliance. • Properly hardened enclosures should be installed and maintained to ensure they are operable and free of tampering. Access to these enclosures is controlled through physical barriers, such as locks and bolts, and may include tamper-evident hardware. • Records should be maintained concerning maintenance performed, access, and any possible tampering marks or associated incidents.