基于SIR模型的蠕虫传播流量模型

Worm Propagation and Traffic Model Based on SIR Model

为了更好地研究在蠕虫传播过程中的流量特征,通过对传统SIR蠕虫模型的不足之处进行分析,提出一个改进的蠕虫传播流量模型,用分层次划分网络拓扑和增加一个“临界”状态模拟网络延迟造成的影响,并在NS2环境中进行了模拟.模拟结果显示,改进的模型能较好地符合实际网络中的蠕虫传播趋势和流量特征.

By analysing traditional SIR worm propagation model, this paper finds out its shortage for not considering network topology and effection of network delay. In order to solve these two problem, we provide an improved worm propagation and traffic model, in which we use the method of topology partition and add a critical state in SIR model. The simulation result shows that the improved model fits worm propagation tendency and traffic character well.