NIST 800-171 3.12.3 (CA.L2-3.12.3): Ongoing Monitoring
Monitor security controls on an ongoing basis to ensure the continued effectiveness of the controls.
CMMC Level 2 practice CA.L2-3.12.3
What 3.12.3 means in practice
Controls are watched continuously, or close to it, so you learn when one stops working instead of discovering it at the next assessment. That combines automated checks of configurations and logs with scheduled reviews of the controls that cannot be automated.
SPRS points and the CMMC POA&M
- CMMC Level 2 practice
- CA.L2-3.12.3
- SPRS points
- 5 points. When it is not met, the DoD Assessment Methodology subtracts 5 from the score of 110.
- CMMC POA&M
- Not allowed. It is worth 5 points, and 32 CFR 170.21(a)(2)(ii) admits only requirements worth 1 point, with one exception: 3.13.11 when encryption is used but not FIPS validated.
Sources: NIST SP 800-171 DoD Assessment Methodology, version 1.2.1 (June 24, 2020), Annex A; 32 CFR 170.21, Plan of Action and Milestones requirements.
What an assessor checks for 3.12.3
NIST SP 800-171A gives one determination statement for 3.12.3.
Determine if security controls are monitored on an ongoing basis to ensure the continued effectiveness of those controls.
NIST SP 800-171A (June 2018), assessment objectives for 3.12.3
Evidence that shows 3.12.3 is met
- The monitoring strategy: which controls are checked, how and how often.
- Dashboards or reports from automated control monitoring.
- Records of monitoring findings that led to fixes.
How PolicyCortex gathers the evidence
No PolicyCortex collector reads the evidence for 3.12.3. Your team provides the evidence listed above.
Meet the requirement once. Keep the evidence current.
- Published
- Last updated
- Unchanged since publication