基于三方动态博弈模型的网络生存防御策略优化配置

针对网络攻防环境中防御方以提高系统生存能力为目的所进行的最优生存防御策略的选取问题,提出了一种基于完全信息动态博弈理论的生存防御策略优化配置算法。将恶意攻击方、故障意外事件及防御方作为博弈的参与人,提出了一种混合战略模式下的三方动态博弈模型,对博弈的主要信息要素进行了说明,以混合战略纳什均衡理论为基础,将原纳什均衡条件式的表达式转化为可计算数值结果的表达式,并据此增加了近似的概念,最后,将提出的模型和近似纳什均衡求解算法应用到一个网络实例中,结果证明了模型和算法的可行性和有效性。

Strategy Optimizing Selection of Network Survivability Based on Three Players'Dynamic Game Model

A strategy optimizing selection algorithm for network survivable defense based on complete information dynamic game theory is proposed. It is to improve the network survivability in attack and defense process as viewed from optimizing the strategy combination. A three players' dynamic game model is given,the players respectively are attacker,accident and defender. The main elements of dynamic game are explained. A new mixed strategy Nash equilibrium theory is brought forward on the basis of classical Nash equilibrium. The expression of Nash equilibrium is no longer a qualification but a result led to values,which brought the concept of approximation. At last,the given model and algorithm are applied to a real network,the experimental results show that the model and algorithm are feasible and effective.