Computer and Modernization ›› 2022, Vol. 0 ›› Issue (11): 43-51.

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 Vulnerability Assessment Model of SDN Mobile Network for Service Transmission

  

  1. (1. College of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China;
    2. Shanghai Aerospace Electronic Technology Research Institute, Shanghai 201108, China)
  • Online:2022-11-30 Published:2022-11-30

Abstract: Aiming at the problems that the existing vulnerability assessment algorithms can not be directly applied to software defined network(SDN), and the assessment technology is generally biased towards network connectivity and can not analyze the vulnerability of SDN according to service and transmission performance, a service-oriented SDN mobile network vulnerability assessment model and algorithm are proposed, a mobile network vulnerability assessment framework based on SDN is designed. A method for security vulnerability analysis of mobile network server nodes and network equipment based on SDN is proposed. The vulnerability of node equipment is evaluated from static configuration information and dynamic operation information respectively, so as to make the evaluation more comprehensive and accurate; Then, according to the service and transmission characteristics of SDN mobile network, the node importance of service-oriented and transmission based SDN mobile network is calculated from 2 aspects: topology transmission performance and node activity. Finally, the security vulnerability and importance of node devices are fused to evaluate the vulnerability of mobile network based on SDN, and the evaluation results are obtained. The effectiveness of the proposed algorithm is verified by examples and simulation experiments. Compared with similar algorithms, it can achieve higher evaluation accuracy.

Key words: SDN, vulnerability assessment, security vulnerability, node importance