industrial control systems reference architecture · scada, dcs, plc, ems systems level 5 internet...

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Industrial Control Systems Reference Architecture / / SCADA, DCS, PLC, EMS Systems Level 5 Internet DMZ Level 4 Enterprise LAN Level 3.5 Enterprise DMZ Level 3 Operations DMZ Level 2 Supervisory LAN Level 1 Controller LAN Level 0 Instrumentation Bus Network

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Page 1: Industrial Control Systems Reference Architecture · SCADA, DCS, PLC, EMS Systems Level 5 Internet DMZ Level 4 Enterprise LAN Level 3.5 Enterprise DMZ Level 3 Operations DMZ Level

Industrial Control Systems Reference Architecture

/ /

SCADA, DCS, PLC, EMS Systems

Level 5Internet DMZ

Level 4Enterprise LAN

Level 3.5Enterprise DMZ

Level 3Operations DMZ

Level 2Supervisory LAN

Level 1Controller LAN

Level 0Instrumentation Bus Network