Physical Locking
Definition
Employ a mechanical locking device for securing moveable portions of physical barriers (e.g., doors, gates, drawers) in a secured position.
How it works
A physical mechanism which has a associated credential which when entered enables the lock bolt to operate, i.e. open or close.
Considerations
Consider that locks for specified materials should adhere to relevant regulations.
Lock equipment cabinets when not needed for operation or safety; set OT asset keys of devices (e.g., PLCs and safety systems) to the “RUN” position unless otherwise specified.
Locks and all associated hardware should be properly installed, operable, and free of substantive indications of tampering.
Records should be maintained concerning maintenance performed, access, and any possible tampering marks or associated incidents.
For locks operated by a physical key, a key management system should be implemented to manage and secure physical keys.
Key locks should provide a high degree of resistance to opening by force and tampering techniques.
References
The following references were used to develop the Physical Locking knowledge-base article.
(Note: the consideration of references does not imply specific functionality exists in an offering.)