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Network & Security

VLANs, firewalls, Wireshark captures, protocol ports, IEC 62443, OT segmentation

6 articles in Network & Security

NetTool roundup

Building Automation Network Diagnostic Toolkit

Essential free tools every BAS technician should have on their laptop.

7 min read
NetChecklist

How to Run a BAS Cybersecurity Audit

Building owners face pressure from insurers and regulations but have no BAS-specific audit checklist.

10 min read
NetDesign guide

IEC 62443 Security Zones for Building Automation

IEC 62443 guidance is abstract and manufacturing-focused; BAS professionals need a practical translation.

10 min read
NetDesign guide

VLAN Design for Building Automation Networks

IT teams lack guidance on structuring VLANs specifically for BAS protocols and broadcast traffic.

10 min read
NetConfig snippet

BACnet Firewall Rules: Ports to Open and Block

After network segmentation, BACnet traffic gets blocked by firewalls; technicians need exact port/protocol rules.

7 min read
NetConfig snippet / cheat sheet

Wireshark Display Filters for BACnet

Technicians capture traffic but cannot isolate BACnet packets from general network noise.

6 min read