Primary definition
A boundary with a set of mechanisms that enforces the security policies and controls the flow of information between interconnected information systems. Source: NIST SP 800-37 Rev 1; NIST SP 800-53 Rev 4
Also known assecurity boundary · secure interface · controlled boundary · policy enforcement boundary · information flow control interface
2 sources cited4 related termsReviewed Aug 9, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
A boundary with a set of mechanisms that enforces the security policies and controls the flow of information between interconnected information systems. Source: NIST SP 800-37 Rev 1; NIST SP 800-53 Rev 4
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Controlled Interface. In Election Security Glossary. Retrieved August 22, 2026, from https://electionsecurityglossary.com/glossary/controlled-interface
Sources
2 cited · last checked Aug 9, 2026
01
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
High consensus
02
The Cyber Glossary
The Cyber Glossary
Multi-source
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