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通过对随机常量传播模型和基于随机扫描的离散传播模型的比较,分析了蠕虫病毒在两种模型中的传播趋势,动态研究了蠕虫全周期的传播行为以及在不同影响下的微观表现,详尽分析了随机扫描的离散传播模型的三个重要动态因素,得到了蠕虫传播初期预防和传播后期抑制的手段方法。仿真实验结果表明:已感染主机免疫率和易感染主机免疫率的提高能够减小蠕虫传播初期的传播速度及加快后期抑制病毒的速度,主机扫描数的降低也能减小蠕虫初期的传播速度。
By comparing the stochastic propagation model and the stochastic scattering model based on stochastic scanning, this paper analyzes the propagation trend of the worm in the two models and dynamically studies the worm’s full-cycle transmission behavior and the microscopic performance under different influences. Three important dynamic factors of the discrete-time propagation model of random-scanning were obtained, and the means of prevention and propagation of late-stage worm propagation were obtained. The simulation results show that the increase of host immune rate and susceptible host immune rate can reduce the propagation speed of initial worm propagation and speed up the late virus suppression. The reduction of host scan number also can reduce the initial propagation speed of worm.