摘要
天地一体化网络因结构复杂存在网络异构动态、间歇连通、节点高度暴露等特性。为了保证安全,需要研究专有的接入认证架构与方法。利用软件定义网络控制面与数据面分离的思想将其与天地一体化信息网络相结合提出一种新的接入认证架构,对认证架构与过程进行详细描述,可以实现对网络的安全防护与资源的优化控制;根据架构特点,提出七个影响接入点决策的属性,给出各个属性的计算公式,将层次分析法与逼近理想解的排序方法相结合提出一种接入点决策算法。实验仿真结果表明,接入点决策准确,可以实现资源的合理利用。
Due to the complex structure of space-ground integration network,it has characteristics of heterogeneous,dynamic,intermittent connectivity and high exposure,it is necessary to study the special access authentication architecture and method in order to ensure security. The software defined network( SDN) adopted the idea of separating control surface from data surface,so this paper proposed a new access authentication architecture which combined SDN and space-ground integration network to realize flexibility. It consisted of detailed description of the authentication architecture and process,and it could realize security protection and resources optimization control. Then according to the characteristics of the architecture,this paper put forward 7 attributes of influencing access point decision,and presented the calculating formula of each attribute. In addition,it proposed an access point decision algorithm based on analytic hierarchy process and technique for order preference by similarity to an ideal solution. Simulation experiments show that the algorithm can select the best access point and it can achieve reasonable utilization of resources.
引文
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