CST018
Implement network segmentation and authenticated gateways to satisfy IEC 62443 zone-and-conduit requirements without blocking legitimate operational data flows.
CyberTRIZ analysis · BrownFieldIndustrialProjects contradiction C14-CST018 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Cybersecurity vs Connectivity
Business ContextConnected equipment and systems enable remote monitoring, analytics, integration, and faster information exchange. Greater connectivity also expands pathways through which industrial systems can be accessed or disrupted.
Brown Field Industrial Projects TRIZ ResolutionSeparate connectivity according to function and trust requirements. Segmented networks, controlled gateways, authenticated access, and one-way information flows where appropriate can preserve useful connectivity while limiting exposure.
Applicable TRIZ Principles
Principle 1 – Segmentation: divides networks into controlled security zones.
Principle 24 – Intermediary: routes necessary communication through protected interfaces.
Principle 2 – Taking Out: removes unnecessary connectivity from critical systems.
Expected Outcome
Greater useful connectivity
Reduced cyber exposure
Better network control
Improved system resilience
Decision IndicatorsEarly indicators that this contradiction is limiting project performance include:
New connectivity creates unrestricted pathways between systems.
Cybersecurity requirements block useful data access entirely.
Legacy equipment is connected without adequate protection.
Remote access grows without corresponding control.
Network architecture lacks functional segmentation.
Monitoring these indicators helps organizations expand connectivity without creating unnecessary cybersecurity exposure.