NIST Special Publication 800-171 Revision 2

Discussion:

Monitoring of physical access includes publicly accessible areas within organizational facilities. This can be accomplished, for example, by the employment of guards; the use of sensor devices; or the use of video surveillance equipment such as cameras. Examples of support infrastructure include system distribution, transmission, and power lines. Security controls applied to the support infrastructure prevent accidental damage, disruption, and physical tampering. Such controls may also be necessary to prevent eavesdropping or modification of unencrypted transmissions. Physical access controls to support infrastructure include locked wiring closets; disconnected or locked spare jacks; protection of cabling by conduit or cable trays; and wiretapping sensors.

Upon assessment, assessors must determine if-

3.10.2[a] the physical facility where organizational systems reside is protected.
3.10.2[b] the support infrastructure for organizational systems is protected.
3.10.2[c] the physical faciity where organizational systems reside is monitored.
3.10.2[d] the support infrastructure for organizational systems is monitored.

Assessors are instructed to-

Examine: [SELECT FROM: Physical and environmental protection policy; procedures addressing physical access monitoring; system security plan; physical access logs or records; physical access monitoring records; physical access log reviews; other relevant documents or records].

Interview: [SELECT FROM: Personnel with physical access monitoring responsibilities; personnel with incident response responsibilities; personnel with information security responsibilities].

Test: [SELECT FROM: Organizational processes for monitoring physical access; mechanisms supporting or implementing physical access monitoring; mechanisms supporting or implementing the review of physical access logs].