基于跳数的防御无线传感器网络中虫洞攻击方案

虫洞攻击是一种针对无线传感器网络路由协议的特殊攻击,一般由至少两个合谋节点协同发起。合谋节点通过建立起一条高带宽高质量的私有信道来对数据进行吸引和传输,通过扰乱路由分组的传输达到破坏网络正常运行的目的。本文基于无线传感器网络反应式路由协议AODV协议,从网络管理者的角度出发,不引入额外的硬件辅助,也不需要节点之间时钟同步,提出IAODV(Improved AODV)协议。相比较于AODV协议,IAODV协议增加了源节点路由跳数判断机制和随机选择路由的虫洞攻击防御方案。用NS2仿真平台实现虫洞攻击模块的仿真和改进协议的仿真,结果证明了改进协议的有效性。

A Scheme Against Wormhole Attack in Wireless Sensor Network Based on Hop-count

The wormhole attack, where packets are recorded at one location and replayed at another, creating a virtual link under attacker. This attack can form a serious threat in route establishment and data transmitting. In this paper, we propose a scheme named IAODV based on AODV. The proposed approach does not use any special hardware artifact or clock synchronization mechanism, making the technique universally applicable. Simulation results on NS2 show that the proposed approach provides effective protection against poten- tially devastating wormhole attacks.