# SC-46 — Cross Domain Policy Enforcement

- **Control ID:** SC-46
- **Family:** [SC](/md/families/SC.md)
- **Baselines:** No content available.
- **Enhancement of:** No content available.

## Description

Implement a policy enforcement mechanism \[assignment\] between the physical and/or network interfaces for the connecting security domains.

## Discussion

For logical policy enforcement mechanisms, organizations avoid creating a logical path between interfaces to prevent the ability to bypass the policy enforcement mechanism. For physical policy enforcement mechanisms, the robustness of physical isolation afforded by the physical implementation of policy enforcement to preclude the presence of logical covert channels penetrating the security domain may be needed. Contact \[ncdsmo@nsa.gov\](mailto:ncdsmo@nsa.gov) for more information.

## Implementation guidance

No content available.

## CSF 2.0 subcategories

No content available.

## Related controls

- [AC-4](/md/controls/AC-4.md)
- [SC-7](/md/controls/SC-7.md)

---

Derived from official NIST publications (NIST SP 800-53 Rev 5 and NIST CSF 2.0). nistcontrols.com is not affiliated with NIST.