National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

NIST Special Publication 800-53 (Rev. 4)

Security and Privacy Controls for Federal Information Systems and Organizations

SC-21 SECURE NAME / ADDRESS RESOLUTION SERVICE (RECURSIVE OR CACHING RESOLVER)

Family:
SC - SYSTEM AND COMMUNICATIONS PROTECTION
Class:
Priority:
P1 - Implement P1 security controls first.
Baseline Allocation:
Low Moderate High
SC-21 SC-21 SC-21

Control Description

The information system requests and performs data origin authentication and data integrity verification on the name/address resolution responses the system receives from authoritative sources.

Supplemental Guidance

Each client of name resolution services either performs this validation on its own, or has authenticated channels to trusted validation providers. Information systems that provide name and address resolution services for local clients include, for example, recursive resolving or caching domain name system (DNS) servers. DNS client resolvers either perform validation of DNSSEC signatures, or clients use authenticated channels to recursive resolvers that perform such validations. Information systems that use technologies other than the DNS to map between host/service names and network addresses provide other means to enable clients to verify the authenticity and integrity of response data.

Related to: SC-20SC-22

Control Enhancements

SC-21(1) SECURE NAME / ADDRESS RESOLUTION SERVICE (RECURSIVE OR CACHING RESOLVER) | DATA ORIGIN / INTEGRITY
[Withdrawn: Incorporated into SC-21].

References

NIST Special Publication 800-81 https://csrc.nist.gov/publications/search?keywords-lg=800-81