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controlSC-21
Secure Name/Address Resolution Service (Recursive or Caching Resolver) (SC-21)
Request and perform data origin authentication and data integrity verification on the name/address resolution responses the system receives from authoritative sources.
Security Baselines
LOWMODERATEHIGH
communicationsencryptionboundary-protectionnetwork
Why These Connect
Baselined In3
This control is included in the linked security baseline (LOW, MODERATE, or HIGH).
Supports3
These related controls work together — a change to one may affect the others.
Enhances1
These enhancements add specific capabilities or refinements to the base control.