Logical grouping of communication channels, connecting two or more zones, that share common security requirements.

Source:  DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards


Logical grouping of communication assets that protects the security of the channels it contains.

  • NOTE: This is analogous to the way that a physical conduit protects cables from physical damage.

Source: API SPEC 11D1, Packers and Bridge Plugs, Upstream Segment, Second Edition, July 2009. Global Standards

Source: ANSI/ISA–99.00.01–2007, Security for Industrial Automation and Control Systems, Part 1: Terminology, Concepts, and Models, 29 October 2007. National Standard

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