Definitions Edit

A controlled interface is

[a] [m]echanism that facilitates the adjudication of different interconnected system security policies (e.g., controlling the flow of information into or out of an interconnected system).[1]
[a] boundary with a set of mechanisms that enforces the security policies and controls the flow of information between interconnected information systems.[2]
[t]he software, hardware, firmware, and equipment that mediate the differences in security and need-to-know between attached automated information systems.[3]

Overview Edit

"Controlled interfaces protect information that is processed, stored, or transmitted on interconnected systems. That information should be considered when categorizing the controlled interface."[4]

References Edit

  1. CNSSI No. 4009.
  2. NIST Special Publication 800-53, App. B, Glossary.
  3. DOE Manual 470.4-7, at 16.
  4. CNSSI No. 1253, at 5 n.5.

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