NIST800-AC-25 AC-25 Reference Monitor
NIST800-AC-25 in NIST SP 800-53 Rev 5 (NIST SP 800-53 Rev 5, Release 5.2.0). All NIST SP 800-53 Rev 5 controls held. Open NIST SP 800-53 Rev 5 on the standards site.
The control as we hold it
AC-25 Reference Monitor. Implement a reference monitor for [Assignment: organization-defined access control policies] that is tamperproof, always invoked, and small enough to be subject to analysis and testing, the completeness of which can be assured.
Reviewed and closest counterparts in the other frameworks
We hold no cross-framework row for NIST800-AC-25 yet. The reviewed pairs page lists the released pairs and their coverage.
What an auditor commonly asks for
General guidance for this control area (domain: AC - Access Control), in our words, not a statement of the standard and not binding on an assessor.
- the access-control policy and procedures
- the account-management and privilege records
- the periodic access-review output