一种随机-无标度混合的P2P蠕虫传播模型

针对现有模型中只用节点度来构建蠕虫网络的不足,文中结合无标度网络性质和实际P2P网络通信的特点,引入一个表示新节点连接概率的调节参数,在此基础上以随机选择与优先依附混合的方式建立蠕虫传播模型,并利用平均场理论和Matlab仿真对模型的演化机理进行研究.理论分析与仿真实验表明:选择蠕虫网络中合适的节点和新感染蠕虫主机建立的连接与连接概率、节点吸引力等因素有着紧密的联系;所建立的蠕虫网络具有无标度网络的性质.

A Random and Scale-Free Hybrid P2P Worm Propagation Model

Robustness and small-world property of scale-free network are the desirable features in worm network. Combined with the real peer-to-peer network characteristics, a method is proposed to establish a worm network and its propagation model with both random and preferential attachments, which are unified by introducing a parameter. The model evolution mechanism is studied by mean-field theory and simulation. The theoretical calculation and computer simulation show that the connection between the suitable nodes selected from network and the newly infected host is related to selection node way, host performance and bandwidth; the established worm network has scale-free property.