信息系统生存性仿真模型研究

Simulation Model of Information System Survivability

生存性是信息系统的重要特性之一,它建立在安全性、可靠性、可重用性等相关研究领域之上。该文首先分析了信息网络的生存性特点,提出了能反映信息系统生存性要素的仿真推演模型。在生存性研究中必须同时考虑网络攻击事件和应急修复过程对信息系统的生存性的影响,并分别给出了相应的系统状态转移矩阵的计算方法。最后,提出了研究信息网络生存性仿真的主要流程,并认为对信息系统生存性仿真测试结果的分析是调整和提高信息系统生存性的重要依据。

<Abstrcat>Survivability based on related fields of study , such as security , reliability , reusability etc. , is one of the important characteristics of information system . In this paper , first the properties of survivability have been analysed , and simulation model reflecting the elements of survivability is studied. Second , network attack incident and restore procedure must simultaneously be taken into consideration because the two kinds of actions mentioned effect the survivability. Third , the method used to calculate system state transition matrix is proposed in the research. The state transition is brought by network attack incident and restore procedure. The next , the main flow of the simulation of survivability is illustrated. Finally , it is believed that the analysis deriving from the result of the simulation of information system survivability should be the fundation used to adjust and enhance information system survivability.