摘要： Ad hoc网络无线协议栈的灵活性使节点容易对协议实施篡改以达到非法抢占信道等目的。在对节点MAC层恶意行为分析的基础上，提出基于代理的分布式行为检测机制。仿真表明，该机制能有效检测恶意节点。引入trap确认机制，将检测与网络管理及跨层控制相结合，实现全网范围的攻击检测与控制，降低恶意行为对网络的危害程度，提高无线网络的健壮性。

关键词: Ad hoc网络, MAC层攻击, 分布式检测

Abstract: The nodes in Ad hoc network adopt flexible wireless protocols and some malicious nodes tamper with the protocol to access the wireless channel illegitimately. Based on the analysis of MAC layer attack, this paper provides a new distributed detection scheme based on Agent. Simulation result indicates its high efficiency. It deploys trap mechanism for acknowledgement combining distributed detection with network management of cross-layer control, realizes attack detection and response control over the whole network, depresses the harm of typical attack, and improves robustness of wireless networks.

Key words: Ad hoc network, MAC layer attack, distributed detection

中图分类号: 

• TP393.04