AC-4(29) Filter Orchestration Engines
Control enhancement of AC-4 Information Flow Enforcement
Control
When transferring information between different security domains, employ content filter orchestration engines to ensure that:
Content filtering mechanisms successfully complete execution without errors; and
Content filtering actions occur in the correct order and comply with [Assignment: policy].
Discussion
Content filtering is the process of inspecting information as it traverses a cross-domain solution and determines if the information meets a predefined security policy. An orchestration engine coordinates the sequencing of activities (manual and automated) in a content filtering process. Errors are defined as either anomalous actions or unexpected termination of the content filter process. This is not the same as a filter failing content due to non-compliance with policy. Content filter reports are a commonly used mechanism to ensure that expected filtering actions are completed successfully.
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Control catalog and framework text on this page is reproduced from official NIST publications — a public-domain work of the U.S. Government (17 U.S.C. §105). Maverc commentary, groupings, and readiness guidance are our own and are not part of any NIST publication.