动态环境下的主动蠕虫攻击分析

鉴于当前很少有传播模型充分考虑到P2P节点动态特征对主动蠕虫攻击的影响, 提出两个动态环境下的主动蠕虫传播模型。分析了主动蠕虫两种常见的攻击方式, 给出了相应攻击背景下的节点状态转换过程, 在综合考虑P2P节点动态特征的基础上提出了两种主动蠕虫传播模型, 并对所提出的模型进行了数值分析, 探讨动态环境下影响主动蠕虫传播速度的关键因素。实验结果表明, 通过提高P2P节点的离线率和免疫力可以有效地抑制主动蠕虫对P2P网络的攻击。

Analyze active worm attacks in dynamic environment

Given few works focused on the propagation model that fully considered the influence of the dynamic features of P2P nodes on active worm attack, this paper proposed two propagation models of active worms in dynamic environment. First, it studied two common attack strategies of active worms and provided states transition process of nodes when active worms spread in accordance with these attack strategies. Second, it presented two propagation models combined with the dynamic characteristic of P2P nodes. And finally, it conducted mathematical analysis on these presented models and explored the key factors affecting active worm propagation in dynamic P2P environment. The experimental result shows that it is able to effectively suppress the spread of active worm in P2P networks by increasing the off-line rate and immunity of P2P nodes.