Overview#
Segmentation approach for industrial environments based on ISA/IEC 62443. Defines trust zones and controlled pathways (conduits) between them.
Core objectives#
- Establish shared definitions of Zoning and Conduits for security, engineering, and leadership teams.
- Connect Zoning and Conduits activities to measurable risk reduction and resilience goals.
- Provide onboarding notes so new team members can quickly understand how Zoning and Conduits works here.
Implementation notes#
- Identify the primary owner for Zoning and Conduits, the data sources involved, and the systems affected.
- Document the minimum viable process, tooling, and runbooks that keep Zoning and Conduits healthy.
- Map Zoning and Conduits practices to standards such as ISO/IEC 27001, NIST CSF, or CIS Controls.
Operational signals#
- Leading indicators: early warnings that Zoning and Conduits might degrade (e.g., backlog growth, noisy alerts, or missed SLAs).
- Lagging indicators: realized impact that shows Zoning and Conduits failed or needs investment (e.g., incidents, audit findings).
- Feedback loops: retrospectives and metrics reviews that tune Zoning and Conduits continuously.
Related practices#
- Align Zoning and Conduits with defense-in-depth planning, threat modeling, and disaster recovery tests.
- Communicate updates to stakeholders through concise briefs, dashboards, and internal FAQs.
- Pair Zoning and Conduits improvements with tabletop exercises to validate expectations.