Abstract
Simulation experiment is an important means of analyzing and assessing the security of SCADA (Supervisory Control and Data Acquisition) system, however, the existing simulation environments have some limitations in flexibility and extensibility. According to the type of industrial infrastructure and the structure of SCADA system, the abstract models of SCADA system are established, the reference architecture of SCADA system simulation environment is proposed, and the simulation environment for analyzing and assessing the security of SCADA system is designed and implemented. This simulation environment has the characteristics of extensibilities and adaptability, and integrated several components including the simulated enterprise network, OPC Client/HMI, industrial OPC server, SCADA protocol tester, SCADA RTUs, and the sensors and actuators, etc. Finally, experiment on the representative SCADA system attack scenario of has been conducted in this simulation environment to analyze and assess their security status, and the results demonstrate the effectiveness and practicability of the simulation environment.
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