Reference design for a segmented industrial IT/OT network: zone model, VLAN and subnet plan, communication matrix, firewall rule examples, and a secure remote access concept using VPN, MFA and a DMZ jump server.
plc industrial-automation scada mermaid industrial-control-systems network-segmentation it-ot ot-security industrial-networking factory-network
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Updated
May 30, 2026 - Mermaid