Chapter 9
Establishing Zones and Conduits
Abstract
Zones and conduits are a fundamental concept of industrial network cyber security. By grouping similar devices or systems into “zones” according to security levels, and controlling communications between zones, a strong foundation of security will be realized. But how do you know what belongs in what zone?
Keywords
Zone
Conduit
ISA-99
ISA-62443
IEC-62443
Security Levels
Information in this chapter
• Security Zones and Conduits Explained
• Identifying and Classifying Security Zones and Conduits
• Recommended Security Zone Separation
• Establishing Security Zones and Conduits
The concepts of Defense in Depth, as discussed up to this point, have focused on the separation of devices, communication ...
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