Physical Enforcement of Industrial Automation Security

IEC 62443 defines zone and conduit requirements for industrial control system security. Firevault Control provides the physical enforcement layer that ensures zones are truly separated and conduits are genuinely controlled.

SL 4

Security Level achievable with physical enforcement

100%

Zone boundary physical enforcement

9

Control modules mapping to IEC 62443 requirements

Full

Automated compliance evidence generation

"We passed our IEC 62443 assessment in January. By April, a routine firewall change had created a path from our enterprise zone directly into the control system zone. Nobody noticed for three months. The zone boundary existed only as long as the firewall rules were correct."

Physical compliance with IEC 62443.

Industrial organisations achieve demonstrable IEC 62443 compliance through physical zone enforcement rather than software-defined boundaries. Zone boundaries cannot be bypassed through misconfiguration. Conduits are governed, time-limited, and fully audited. Compliance evidence is generated continuously and preserved in tamper-proof archives.

• Physical zone boundaries that cannot be misconfigured
• Governed, time-limited conduits with full audit capture
• Continuous compliance evidence between assessments
• Direct mapping to Purdue model levels
• Tamper-proof audit logs for assessor review
• Air-gapped evidence preservation

Physical Zone Enforcement

Zone boundaries are physical, not logical. No software change can create an unauthorised path between zones regardless of privilege level.

Conduit Control

Every conduit between zones requires multi-party authorisation, operates within defined time windows, and generates full audit evidence.

Continuous Evidence

Automated logging generates continuous IEC 62443 compliance evidence, eliminating the gap between point-in-time assessments.

Purdue Model Alignment

Control modules map directly to Purdue model levels, providing clear, auditable alignment between your architecture and the standard.

Audit-Ready Logs

Tamper-proof logs record every zone boundary state change, conduit activation, and access authorisation for assessor review.

Evidence Preservation

Air-gapped compliance evidence archives ensure audit records persist independently of any network-connected systems.

Zone and Conduit Assessment

Map your current IEC 62443 zone architecture and identify where logical boundaries should be replaced with physical enforcement.

Physical Zone Design

Design physically enforced zone boundaries with Control modules at each conduit, aligned to your target Security Level.

Compliance Validation

Deploy in a representative zone boundary with full evidence generation to validate compliance claims before your next assessment.

Full Zone Enforcement

Physical enforcement across all zone boundaries with continuous compliance evidence and tamper-proof audit archives.

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