摘要
研究网络安全态势准确评估问题。当前网络安全态势评估没有考虑不同时段入侵后网络的变化因素,以入侵前后相同静态固定指标评估为主,缺少不同时段内动态可持续评估的方法。为提高准确性,提出基于差分进化的网络安全态势动态评估方法。在网络安全特征提取的过程中,将网络安全特征与异常特征进行对比,并对网络安全特征进行加权运算,计算特征提取误差,完成网络安全特征提取。根据差分进化相关理论,搜索网络安全变异个体,并且对原始个体和变异个体进行交叉操作,获取新的种群,实现网络安全态势评估。实验结果表明,利用改进算法进行网络安全态势评估,能够极大的提高评估的准确性。
This paper presents a dynamic assessment method of network security situation based on the differential evolution. In the process of network security feature extraction, the comparison of network security characteristic and the anomaly characteristic is performed. Moreover, the network security characteristic is made by weighted calcula- tion, and the error of feature extraction is calculated to complete network security feature extraction. Then, according to the related theory of differential evolution, the network security mutation individual is searched, and the original individual and mutation individual are made interlace operation to obtain new species and implement network security situation assessment. The experimental results show that the improved algorithm can greatly increase the accuracy of evaluation.
出处
《计算机仿真》
CSCD
北大核心
2014年第10期330-333,共4页
Computer Simulation
关键词
网络安全
安全评估
差分进化
Network security
Safety evaluation
Differential evolution
