无线网络中容忍入侵能力评估模型仿真分析

Tolerate Invasion Ability Evaluation Modelin Wireless Network Simulation Analysis

针对无线网络中容忍入侵能力进行优化评估,在提高无线网络安全方面具有重要意义。由于无线网络具有开放性,使得存在网络入侵防御不全面。传统的建模方法主要根据无线网络中入侵种类进行分类,判断入侵形式,并进行入侵能力评估,评估过程中需添加大量的约束条件,导致评估建模不准确。提出基于改进层次化的无线网络中容忍入侵能力评估建模方法。改进方法先利用层次化算法组建无线网络安全态势模型,获取无线网络系统受到攻击影响的效果,利用攻击效果修正无线网络安全态势模型。通过对各个指标的定量计算组建了无线网络中容忍入侵能力评估模型。仿真结果证明,提出的方法提高了容忍入侵能力评估的准确性。

It is significant in improving wireless network security to optimize evaluation of tolerating invasion ability. Network intrusion prevention is incomplete due to the openness of wireless network. Traditional modeling approach classifies invasion based on species to judge its form and evaluate ability. It leads to inaccurate model because of vast constraints in evaluation process. In the paper, a modeling method of tolerating invasion ability evaluation is proposed based on modified hierarchical wireless network. Firstly the security posture model via hierarchical algorithm is built to obtain effect of attacked wireless network system. Then the effect is used to amend security posture model of wireless network. Each index is calculated quantitatively to build evaluation model of tolerating invasion ability. The simulation results show that method mentioned above improves accuracy of tolerating invasion ability evaluation.