AC-4(30)

Requirement

When transferring information between different security domains, implement content filtering mechanisms using multiple processes.

Discussion

The use of multiple processes to implement content filtering mechanisms reduces the likelihood of a single point of failure.

NIST 800-53A Assessment Guidance

Examine

[SELECT FROM: 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].

Interview

[SELECT FROM: Organizational personnel with information flow enforcement responsibilities; system/network administrators; organizational personnel with information security responsibilities].

Test

[SELECT FROM: Mechanisms implementing information flow enforcement functions; mechanisms implementing content filtering].

ID	Assessment Objectives
AC-04(30)	when transferring information between security domains, content-filtering mechanisms using multiple processes are implemented.

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