Abstract

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Software Defined Networking (SDN) is a new type of network architecture, which provides an important way to implement automated network deployment and flexible management. However, security problems in SDN are also inevitable in industrial networks. In the research area of SDN security and traditional network security, feasibility and influence of defense in depth in industrial networks should thus be explored. In this paper, a security classification transmission method based on SDN in industrial networks is proposed, which provides a better security level of transmission paths. In the proposed method, the security classification transmission system is first presented. By designing five service mechanisms, including request, strategy generation, distribution/maintenance, updating/loading and execution, the security classification transmission service model is defined. In an experimental study, the proposed method is shown to be feasible in industrial heterogeneous networks and provide better security paths without affecting availability in the multidomain and multi-nodes case of industrial networks.