操作系统病毒传播模型及混合防御策略

针对现实网络中用户业务需求偏好和单一防御策略的局限性,研究提出操作系统病毒传播模型及混合防御策略。首先,将网络按照采取的防御策略拆分成子网,综合考虑子网间的交叉感染和网络中病毒传播的关联性,构建多防御策略下的操作系统病毒传播模型,给出了系统的平衡点求解和稳定性分析。其次,引入网络业务评估指数及负面成本定义,提出了抑制操作系统病毒传播的混合防御策略,设计了策略最优配置计算方法、执行流程和参数辨识算法。理论和实验结果表明,所提出的操作系统病毒传播模型及混合防御策略能有效补充传统防御手段的空档期。

An Operating System Virus Propagation Model and Hybrid Defense Strategy

Aimed at the problems that user’s business is different in demand for partiality and single defense strategy is limited in real network services, a virus propagation model and mixed defense strategy is proposed in operating system. First of all, the network is split into different subnets by adopting link interrupt and operating system migration strategies. In synthetic consideration of the correlation of the virus infection between subnets and virus propagation, an operating system virus propagation model is constructed, and the equilibrium solution and the stability analysis of the system are given. Secondly, by introducing the network service evaluation index and the definition of negative cost, a hybrid defense strategy is proposed to suppress the spread of operating system virus. The calculation method of optimal policy configuration, execution process and parameter identification algorithm are designed. The theoretical and experimental results show that the proposed virus propagation model and the hybrid defense strategy can effectively supplement the gap period of the traditional defense means in short supply.