boundary

{
  "id": "MLC-T-CYB-000501",
  "term": "boundary",
  "field": "Cybersecurity",
  "definition": "1. A physical or logical perimeter of a system.\n\n2. See also authorization boundary and interface.\n\n3. Physical or logical perimeter of a set of interacting elements, typically determined relative to the authorization boundary. However, it can also be determined by other \"boundaries\" established by programmatic, operational, or jurisdictional control. The system functional boundary provides the basis for the security perspective relative to all interactions and behavior with enabling systems, other systems, and the physical environment.\n\n4. Physical or logical perimeter of a system.\n\n5. Physical or logical perimeter of a system. See also authorization boundary and interface.",
  "see_also": [
    "authorization boundary"
  ],
  "references": [
    "NIST SP 800-160 Vol. 2 Rev. 1 from CNSSI 4009-2015, CNSSI 4009-2022",
    "NIST SP 800-53A Rev. 5",
    "CNSSI 4009-2022 from NIST SP 800-160 Vol. 1 (adapted from note under \"system of interest\" and text on page 96)",
    "CNSSI 4009-2015; NIST SP 800-172 [Superseded]; CNSSI 4009-2022; NIST SP 800-53A Rev. 5 from CNSSI 4009-2015, CNSSI 4009-2022; NIST SP 800-172A [Superseded]; NIST SP 800-172r3",
    "NIST SP 800-53 Rev. 5 from CNSSI 4009-2015, CNSSI 4009-2022",
    "NIST CSRC Glossary"
  ],
  "url": "https://mlchart.com/terminology/cybersecurity/boundary/"
}