id: "AC-04(26)" title: "Audit Filtering Actions" family: "AC" family_name: "Access Control" sort_id: "ac-04.26" priority: "P1" implementation_level: "system" parent: "AC-04" enhancement: True
Statement
When transferring information between different security domains, record and audit content filtering actions and results for the information being filtered.
Guidance
Content filtering is the process of inspecting information as it traverses a cross-domain solution and determines if the information meets a predefined policy. Content filtering actions and the results of filtering actions are recorded for individual messages to ensure that the correct filter actions were applied. Content filter reports are used to assist in troubleshooting actions by, for example, determining why message content was modified and/or why it failed the filtering process. Audit events are defined in AU-2 . Audit records are generated in AU-12.
Assessment Objective: when transferring information between different security domains, content-filtering actions are recorded and audited;
Assessment Objective: when transferring information between different security domains, results for the information being filtered are recorded and audited.
Information flow enforcement policy
procedures addressing information flow enforcement
system design documentation
system configuration settings and associated documentation
system audit records
system security plan
other relevant documents or records
Organizational personnel with information flow enforcement responsibilities
system/network administrators
organizational personnel with information security responsibilities
Mechanisms implementing information flow enforcement functions
mechanisms implementing content filtering
mechanisms recording and auditing content filtering