OT/ICS security labs, industrial networking and controlled technical research.
OT / ICS network engineer — open tools, labs and field notes for industrial network design and IEC 62443 security
Trådlösa nätverk, RTLS och robust kommunikation för tunnel-, gruv- och industrimiljöer.
Passive-first OT LAN tracker for MAC/IP history, DHCP leases, DNS/mDNS names, IP conflicts and TCP reachability, with rate-limited active discovery.
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.
Documentation of an OPC UA machine data flow from PLC systems to SCADA, historian, MES and dashboards: server and client roles, address-space modelling, communication matrices and secure access concepts.
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