多种P2P蠕虫共同传播的建模与分析

发布时间：2018-06-21 23:55

本文选题：网络安全 + 多种P2P蠕虫　；参考：《辽宁大学》2017年硕士论文

【摘要】：随着客户端主机性能的不断提升,多种不同的P2P软件可以在P2P网络中同时运行。根据不同的漏洞编制出不同的P2P蠕虫对于网络可能造成巨大危害性,本文提出了多种P2P蠕虫共同传播的数学模型,主要包括以下两个方面:(1)提出了多种沉默型P2P蠕虫共同传播的传播模型。首先,对于沉默型P2P蠕虫进行了研究,然后,在共存和不共存条件下,对多种沉默型P2P蠕虫的传播进行了建模。在共存情况下,讨论了多种沉默型P2P蠕虫的瀑布型模型;在不共存情况下,分别讨论了多种沉默型P2P蠕虫的直线型、直角型和渐进型模型。进而,通过传播模型分别讨论了各种情况下P2P蠕虫不会泛滥的条件、无病平衡点、地方病平衡点以及达到平衡点时的稳定性。最后,通过仿真实验对模型进行了验证,讨论了模型中的传播参数,如感染率,下载速率以及敏感度等因素对多种P2P蠕虫共同传播的影响。(2)提出了多种被动型P2P蠕虫共同传播的传播模型。首先,根据多种被动型P2P蠕虫的传播情况,将多种P2P蠕虫共同传播分为共存和不共存两种情况。其次,在共存和不共存条件下分别讨论了各种情况下多种被动型P2P蠕虫不会泛滥的条件。最后,通过仿真实验对于模型进行了验证,讨论了模型中的传播参数对多种被动型P2P蠕虫共同传播的影响。基于传播模型的分析表明,感染率、接触率和敏感度在蠕虫的传播过程中起到了关键性作用。并且通过实验数据和传播模型估计了多种P2P蠕虫共同传播的传播速度和危害性;实验还进一步表明,在蠕虫的传播过程中,通过降低感染率和接触率的值可以有效的抑制蠕虫的传播,这为多种P2P蠕虫传播的控制策略提供了依据。
[Abstract]:With the continuous improvement of client host performance, many different P2P software can run simultaneously in P2P network. According to different vulnerabilities, different P2P worms may cause great harm to the network. In this paper, a mathematical model of co-propagation of various P2P worms is proposed. This paper mainly includes the following two aspects: (1) A multi-peer-to-peer worm propagation model is proposed. Firstly, the silent P2P worm is studied, and then, under the condition of coexistence and non-coexistence, the propagation of various silent P2P worms is modeled. In the case of coexistence, the waterfall model of many kinds of silent P2P worms is discussed, and the linear, right angle and progressive models of many kinds of silent P2P worms are discussed respectively in the absence of coexistence. Furthermore, through the propagation model, we discuss the conditions of P2P worm not overflowing, disease-free equilibrium, endemic equilibrium and stability when the P2P worm reaches the equilibrium point. Finally, the model is verified by simulation experiments, and the transmission parameters, such as infection rate, are discussed. The influence of download rate and sensitivity on the co-propagation of various P2P worms. (2) the co-propagation model of various passive P2P worms is proposed. Firstly, according to the spread of various passive P2P worms, the co-propagation of various P2P worms is divided into coexistence and non-coexistence. Secondly, under the conditions of coexistence and non-coexistence, the conditions of passive P2P worms are discussed. Finally, the model is verified by simulation experiments, and the influence of propagation parameters in the model on the co-propagation of various passive P2P worms is discussed. Analysis based on propagation model shows that infection rate, contact rate and sensitivity play a key role in the transmission of worms. And through the experimental data and propagation model to estimate the spread speed and harm of various P2P worms, the experiment further shows that, in the process of worm propagation, By reducing the value of infection rate and contact rate, the worm propagation can be effectively inhibited, which provides a basis for various P2P worm propagation control strategies.
【学位授予单位】：辽宁大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP393.08

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