基于云模型的网络安全态势分析与评估

Analysis and assessment of network security situation based on cloud model

为了更合理地分析和评估网络安全态势,提出了一种基于云模型的网络安全态势分析方法,给出了算法实现的基本思想、关键技术和实现步骤。在标准概念云的生成过程中,提出一种改进的未知确定度的逆向云生成算法,并证明了该算法对云数字特征的估计偏差更小,精度更高。最后,通过kddcup99数据集进行仿真实验。结果表明,该方法兼顾了风险分析的模糊性和随机性,可以较好地对网络安全态势进行分析和预测,为采取正确的预防措施提供了有力参考。

In order to analyze and evaluate the risk of network security more reasonably, a cloud- model based method for network security analysis was proposed. The main ideas, key technical and im- plementation steps of the method were given. The standard clouds were generated using improved back- ward cloud algorithm with unknown certainty. The improved algorithm with smaller deviation was also proved. Finally, Kddcup99 data set was used to simulate. The experimental results show that the pro- posed method retains the uncertainty of risk analysis. It provides a strong reference to adopt appropriate preventive measures.