CCI-001183

Ensure the systems that collectively provide name/address resolution service for an organization implement internal/external role separation.

Implementation Guidance

The organization being inspected/assessed implements a name service resolution architecture where recursive and authoritative server software is not installed on the same information system. The organization must document the architecture in the site security plan. For information system components that have applicable STIGs or SRGs, the organization being inspected/assessed must comply with the STIG/SRG guidance that pertains to CCI 1183.

Validation Procedures

The organization conducting the inspection/assessment reviews the sites implementation documentation of the name resolution servers and verifies authoritative and recursive services are not hosted on the same information system. For information system components that have applicable STIGs or SRGs, the organization conducting the inspection/assessment evaluates the components to ensure that the organization being inspected/assessed has configured the information system in compliance with the applicable STIGs and SRGs pertaining to CCI 1183.

Compelling Evidence

1.) Signed and dated System Security Plan (SSP). 2.) Network Diagram. 3.) Applicable STIG/SRG checks pertaining to CCI 1183.

The controls below (if any) were marked by NIST as being related to CCI-001183.