CCI-002423

Implement cryptographic mechanisms to protect message externals unless otherwise protected by organization-defined alternative physical controls.

Implementation Guidance

Determine if cryptographic mechanisms are implemented to protect message externals unless otherwise protected by [SC-08(03)_ODP; alternative physical controls to protect message externals are defined].

Validation Procedures

Examine: [SELECT FROM: System and communications protection policy; procedures addressing transmission confidentiality and integrity; system design documentation; system configuration settings and associated documentation; system audit records; system security plan; other relevant documents or records]. Interview: [SELECT FROM: System/network administrators; organizational personnel with information security responsibilities; system developer]. Test: [SELECT FROM: Cryptographic mechanisms supporting and/or implementing transmission confidentiality and/or integrity for message externals; mechanisms supporting and/or implementing alternative physical safeguards; organizational processes for defining and implementing alternative physical safeguards].

The controls below (if any) were marked by NIST as being related to CCI-002423.