P2P网络中被动型蠕虫传播与免疫建模  

Modeling Propagation and Immunization of Passive Wormsin Peer-to-Peer Networks

作　　者：冯朝胜[1,2,3] 秦志光[2] 袁丁[1] 卿昱[3] 

机构地区：[1]四川师范大学计算机科学学院,可视化计算与虚拟现实四川省重点实验室,四川成都610101 [2]电子科技大学计算机科学与工程学院,四川成都610054 [3]中国电子科技集团公司第30研究所,四川成都610041

出　　处：《电子学报》2013年第5期884-889,共6页Acta Electronica Sinica

基　　金：国家科技重大专项课题(No.2011ZX03002-002-03);国家自然科学基金(No.60873075);可视化计算与虚拟现实四川省重点实验室课题(No.PJ2012002);广东省产学研重点项目(No.2012B091000054)

摘　　要：鉴于被动型蠕虫的危害性,对被动型蠕虫进行了深入分析,进而基于平均场法建立了被动型蠕虫的传播模型和免疫模型.基于传播模型和流行病传播学理论推导出进入无蠕虫平衡状态的充分条件,仿真实验证明了该充分条件的正确性.另外,仿真实验还表明,下载率和恢复率是控制蠕虫传播的两个可控的关键参数.在免疫软件被编制出来前,降低下载率和提高恢复率能有效控制被动型蠕虫的传播.In this paper,we identified the features of passive worm.Further the models of propagation and immunization of passive worms are proposed in the mean-field methods.Based on the model of worm propagation and Epidemiology,the sufficient condition for the global stability of the worm free equilibrium is deduced.Simulations validate the condition.Both the sufficient condition and all the experiment results show that amongst all P2P-related factors having effect on passive wormpropagation,attack performance of passive worms is most sensitive to two P2P system parameters：the download rate and the recovery rate.Controlling the two parameters,i.e.decreasing the download rate and increasing the recovery rate,provides an effective means for throttling the spread of passive worms.

关 键 词：被动型蠕虫 P2P文件共享网 传播 免疫 建模 仿真 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]