NIST SP 800-172 3.5.3e: Prohibit Connection of Unknown or Unverified System Components
Employ automated or manual and procedural mechanisms that prevent a system component from connecting to organizational systems unless the component is known, authenticated, in a properly configured state, or covered by a trust profile.
What else in your programme already covers this
This control maps to 46 controls across 21 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.
8.3.1 All user access to system components for users and administrators is authenticated via at least one of the following authentication factors: • Something you know, such as a password or passphrase. • Something you
8.4.1 MFA is implemented for all non-console access into the CDE for personnel with administrative access
8.4.2 MFA is implemented for all non-console access into the CDE
8.4.3 MFA is implemented for all remote access originating from outside the entity's network that could access or impact the CDE
You are reading one control. How much of NIST SP 800-172 have you already done?
NIST SP 800-172 3.5.3e is one control. If you already hold one of the frameworks below, a reviewed crosswalk already says how much of NIST SP 800-172 your existing evidence covers. Hold NIST SP 800-53 Rev 5 and 24 of 35 NIST SP 800-172 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. 5 were rejected on the NIST SP 800-53 Rev 5 pair alone.