NETWORK SECURITY SYSTEM FOR PLANT INTEGRATED CONTROL SYSTEM

摘要

PURPOSE: A network security system of an integrated power generation plant control system is provided to detect harmful traffic which tries to trespass on a network of the integrated power generation plant control system by constructing a cyber-security solution. CONSTITUTION: A DCS(Distributed Control System) network is connected to distribution control systems which control power generation facilities. An external network exclusive router(2) connects a company network and an internet network. An one way gateway(3) connects the DCS network and a router for an external network. A network monitoring server(4) detects harmful traffic which tries to trespass on the DCS network. The network monitoring server blocks the access to the detected harmful traffic. [Reference numerals] (11) Distributed control system; (3) One way gateway; (4) Network monitoring server; (5) Patch management server; (6) Security logging server; (7) Intra-network and internet network(Portal Net); (8) Remote monitoring server; (AA) First DCS network; (BB) Second DCS network; (CC) Common utility DCS network