(a) Implement a managed interface for each external telecommunication service; (b) Establish a traffic flow policy for each managed interface; (c) Protect the confidentiality and integrity of the information being transmitted across each interface; (d) Document each exception to the traffic flow policy with a supporting mission or business need and duration of that need; (e) Review exceptions to the traffic flow policy [Assignment: organization-defined frequency] and remove exceptions that are no longer supported by an explicit mission or business need; (f) Prevent unauthorized exchange of control plane traffic with external networks; (g) Publish information to enable remote networks to detect unauthorized control plane traffic from internal networks; and (h) Filter unauthorized control plane traffic from external networks.
This control maps to 2 controls across 2 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.
NIST SP 800-53 Rev 5 NIST800-SC-7(4) is one control. If you already hold one of the frameworks below, a reviewed crosswalk already says how much of NIST SP 800-53 Rev 5 your existing evidence covers. Hold ISO 27001:2022 and 163 of 1014 NIST SP 800-53 Rev 5 controls already carry evidence.
Each report names every control your existing framework evidences, every one it does not, the reasoning behind each claim, and the claims that were argued against and rejected. 342 were rejected on the ISO 27001:2022 pair alone.
The graph holds this control, the 2 it maps to, and the evidence behind each claim, over MCP and REST.