Industrial control system operator interface

OT network segmentation

OT network segmentation for brownfield industrial environments

Segmentation support for defining zones, conduits, trust boundaries, firewall rules and migration steps across live industrial networks.

OT network segmentationzones and conduitsPLC network security

What this requirement usually involves

Brownfield segmentation starts by identifying required communication and operational dependencies. Existing vendor routes, shared engineering services and undocumented switches must be understood before a rule is removed or a boundary is moved.

The full engineering service develops the zone-and-conduit model, permitted-flow record, firewall requirements and migration sequence needed for review before implementation.

How this requirement maps to an engagement

Expected outputs

  • zone and conduit model based on existing communication paths
  • firewall rule and trust boundary recommendations
  • staged migration plan for live environments
  • residual risk notes for constraints that cannot be removed immediately

Technical capability

Zones, conduits, architecture drawings, firewall schedules, and migration planning for live industrial networks.

View capability details

Related services

OT Cybersecurity Engineering Support

Choose this when your project needs specialist engineering capacity. A defined OT cybersecurity work package for risk, architecture, design review, supplier interfaces and assurance evidence within an active industrial project.

Discuss your OT cybersecurity requirement

Discuss the system boundary, decision to be supported, operating constraints and evidence currently available.