AC-4(22)

Requirement

Provide access from a single device to computing platforms, applications, or data residing in multiple different security domains, while preventing information flow between the different security domains.

Discussion

The system provides a capability for users to access each connected security domain without providing any mechanisms to allow users to transfer data or information between the different security domains. An example of an access-only solution is a terminal that provides a user access to information with different security classifications while assuredly keeping the information separate.

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].

ID	Assessment Objectives
AC-04(22)	access is provided from a single device to computing platforms, applications, or data that reside in multiple different security domains while preventing information flow between the different security domains.

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