一种松耦合网络安全态势感知模型

提出一个基于Kaplan-Meier生存性分析的松耦合网络安全态势评估模型，用于对网络的历史安全状态进行评估以及对未来安全趋势进行预测。采用生存性分析理论实现多源数据融合与态势评估方法的松耦合，利用KDD99评估数据集建立包含多种节点的网络安全态势评估实例进行仿真分析，以阐明该模型在适应网络结构以及多源数据动态变化方面的优势，在此基础上绘制安全态势曲线图，并与历史安全趋势进行比较，结果证明该评估模型具有较高的准确性与较强的适用性。

Loose Coupling Network Security Situation Awareness Model

In order to assess the historical security states and forecasts future network security situation,this paper proposes a loose coupling network security situation awareness model by using survivability analysis based on Kaplan-Meier method.It uses survivability analysis method to get loose coupling between multi-source information fusion and security situation awareness method.A representation analysis of example with multi-type nodes based on KDD99 is given for security situation assessment.And it illustrates the superiority of this model in adapting the dynamic changes of network structure and multi-source data.The applicability and correctness of model is validated by drawing the graph of security situational awareness and comparing the results of security situational awareness with historical security states.