home || catalog: SP800-53rev3 / class: Technical / family: (SC) System and Communications Protection ||
search controls:
search nistpubs:

AC
AT
AU
CA
CM
CP
IA
IR
MA
MP
PE
PL
PM
PS
RA
SA
SC

SC-01
SC-02
SC-03
SC-04
SC-05
SC-06
SC-07
SC-08
SC-09
SC-10
SC-11
SC-12
SC-13
SC-14
SC-15
SC-16
SC-17
SC-18
SC-19
SC-20 *
SC-21
SC-22
SC-23
SC-24
SC-25
SC-26
SC-27
SC-28
SC-29
SC-30
SC-31
SC-32
SC-33

SI
MMMMM

  SC-20: Secure Name/Address Resolution Service (Authoritative Source)  

base control objective:
The information system provides additional data origin and integrity artifacts along with the authoritative data the system returns in response to name/address resolution queries.

supplemental objective information:
This control enables remote clients to obtain origin authentication and integrity verification assurances for the host/service name to network address resolution information obtained through the service. A domain name system (DNS) server is an example of an information system that provides name/address resolution service. Digital signatures and cryptographic keys are examples of additional artifacts. DNS resource records are examples of authoritative data. Information systems that use technologies other than the DNS to map between host/service names and network addresses provide other means to assure the authenticity and integrity of response data. The DNS security controls are consistent with, and referenced from, OMB Memorandum 08-23.

enhancements to the base objective:

(1) The information system, when operating as part of a distributed, hierarchical namespace, provides the means to indicate the security status of child subspaces and (if the child supports secure resolution services) enable verification of a chain of trust among parent and child domains.
Enhancement Supplemental Guidance: An example means to indicate the security status of child subspaces is through the use of delegation signer (DS) resource records in the DNS.

mapping to FIPS199 baseline:

  LOW: base (1)     MOD: base (1)     HIGH: base (1)  

related (regimented) controls:

None.

documents referenced in SP800-53rev3 for SC-20:

Document Date Status Title
NIST SP800-32 February, 2001 current   Introduction to Public Key Technology and the Federal PKI Infrastructure
NIST SP800-81 August, 2010 current   Secure Domain Name System (DNS) Deployment Guide

Search SP800-53rev3 catalog: