Assessment Objective

Determine if:

• SC-21[01] data origin authentication is requested for the name/address resolution responses that the system receives from authoritative sources;
• SC-21[02] data origin authentication is performed on the name/address resolution responses that the system receives from authoritative sources;
• SC-21[03] data integrity verification is requested for the name/address resolution responses that the system receives from authoritative sources;
• SC-21[04] data integrity verification is performed on the name/address resolution responses that the system receives from authoritative sources.

Assessment Methods

Examine

• System and communications protection policy
• procedures addressing secure name/address resolution services (recursive or caching resolver)
• system design documentation
• system configuration settings and associated documentation
• system audit records
• system security plan
• other relevant documents or records

Interview

• System/network administrators
• organizational personnel with information security responsibilities
• organizational personnel with responsibilities for managing DNS

Test

• Mechanisms supporting and/or implementing data origin authentication and data integrity verification for name/address resolution services

Συνδεδεμένα ζητήματα

• NIST -

  https://csrc.nist.gov/pubs/sp/800/53/r5/upd1/final