基于熵理论的无线网络安全的模糊风险评估

FUZZY RISK ASSESSMENT OF THE WIRELESS NETWORK SECURITY BASED ON ENTROPY THEORY

讨论了对无线网络安全的风险评估方法,首先对影响网络安全的风险因素进行识别,然后采用模糊逻辑法相结合的方法对无线网络系统进行风险评估。根据无线网络的实际情况,每个风险因素从风险概率、风险影响和不可控制性三方面评判。通过应用熵权系数法,客观地计算出每个风险因素的权重,从而计算出整个无线网络系统的风险等级,以对整个系统进行评估。通过实例说明该方法能很方便地应用于无线网络安全的风险评估,实际结果符合实际。

A risk assessment method is introduced to the estimation of the wireless network security. Firstly,risk factors of the wireless network system are recognized. Fuzzy logical method is applied to the risk assessment,and fuzzy logical method is improved based on the actual condition of the risk assessment of wireless network, Each risk factor is estimated in the aspect of the probability, the impact severity and uncontrollability. For the determination of the weight of the risk factor,a method of entropy-weight coefficient is applied to objective computation, and subjective judgment is overcomed. The study of the case shows that the method can be easily used to the risk assessment of the information security and its results conform to the actual situation.