无线自组织网络信息流传输安全性评估仿真

摘要

对无线自组织网络信息传输安全性的评估,能够有效提高网络信息传输安全系数.对自组织网络信息流传输安全性评估,需要对无线自组织网络节点对应的机密性进行量化,得到网络节点权重信息,完成信息流传输安全性的评估.传统方法首先计算网络叶节点,得到网络中各个攻击序列发生的概率,但忽略了获得网络节点权重信息,导致评估精度偏低.提出新的无线自组织网络信息流传输安全性评估方法,将无线自组织网络攻击所依赖的信息和网络节点本身入侵信息相关联,建立无线自组织网络信息流传输安全性评估框架,依据上述无线自组织网络信息流传输安全性评估框架,对无线自组织网络节点对应的机密性进行量化;计算无线自组织网络节点重要性权重;计算网络安全风险态势值,实现安全性评估.仿真测试结果证明,所提方法为网络安全管理员及时采取防卫措施提供了重要依据.%This article puts forward a new security evaluation method of information flow transmission in wireless ad hoc network.Firstly,the information depending on the attacks of wireless ad hoc network is associated with intrusion information relative to network node,an evaluation framework of information flow transmission security in wireless ad hoc network is built,and then confidentiality corresponding to nodes in wireless ad hoc network is quantized based on above evaluation framework.Moreover,the importance weights of nodes in wireless ad hoc network are calculated,and situation index of network security risk is computed,so as to realize the security evaluation.Simulation result shows that the proposed method provides an important basis for network security administrators to take defensive measures in time.