概率包标记方法中收敛时间的数学模型  

A Mathematical Model of Convergence Time for Probabilistic Packet Marking

作　　者：王小静[1,2] 沈晓军 王军波 

机构地区：[1]63961部队 [2]西安政治学院

出　　处：《计算机工程与科学》2012年第6期7-11,共5页Computer Engineering & Science

摘　　要：本文建立了概率包标记方法中关于收敛时间的数学模型。该模型通过将概率标记方法中攻击路径重构过程表述为一个收敛的随机过程,推导出平均收敛时间与路径长度、标记概率之间的数学定量关系及其概率分布,得出达到最小平均收敛时间需要满足的数学条件。在此基础上,给出两种传统概率包标记方法中收敛时间的改进数学模型。A mathematical model of convergence time for probabilistic packet marking is established. In the model, the attack path reconstruction process is described as a convergent stochastic process. Probability distribution of convergence time and the quantitative relationship among convergence time, path length and marking probability are inferred. The minimum condition of convergence time is obtained. On the basis of this model, two improved mathematical models of convergence time for two tra- ditional probabilistic packet marking approaches are presented. The simulation results show that the im- proved models are more accurate than the given two traditional models.

关 键 词：网络安全 拒绝服务攻击 IP追踪 概率包标记 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]