ABSTRACT
Mobile Adhoc Networks (MANET) are self organizing, decentralized networks and possess dynamic topology, which
make them attractive for routing attacks. Wormhole attack is a network layer attack observed in MANET, which
completely disrupts the communication channel. This paper focuses on study of wormhole attack , its behavior and
the performance impact of wormhole attack on Adhoc On Demand Distance Vector (AODV) routing protocol. The
NS2 network simulator is used to evaluate the wormhole attack impact on AODV.
Keywords: - AODV, MANET, Routing attack, Tunnel, Wormhole attack