Research on Security Model for Industrial Control Networks
工业控制网络安全模型研究

In order to reduce production cost and improve productivity,more proprietary networks is interconnected to IT networks,or more IT technologies are applied to industrial automation systems,network security become a significant problem.Industrial control networks become important component of national infrastructure,when it is attacked or broken,its impact is calamity.Therefore,protecting the security of industrial control networks and defending kinds of attacks and threats is the key contents of nation security.Combining the first Chinese industrial Ethernet standard,Standard for Digital Data Communication for EPA-based Industrial Control Systems,This paper builds general industrial control networks architecture,researches and analyzes threats to it,advances security requirements and proposes DMZ model based security zone,finally depict the model with UML.