Wormhole Detection and Prevention Scheme using Beacon Node Mechanism with Neighbor Node Discovery

The wormhole attack is considered a serious threat to the security in multi-hop ad hoc networks. In wormhole attack, the attacker makes the tunnel from one end to another network, the nodes are in a different place at both ends of the tunnel believe are true neighbours and gets the conversation through the wormhole link . Unlike many other ad hoc routing attacks, worm hole attack cannot be prevented by cryptographic solutions because intruders or create new or modify existing packages, but before existing. In this paper a simple technique to effectively detect attacks wormholes without any special hardware and / or location or timing of the stringent requirements proposed. The proposed technique allows the use of the variance in routing information between neighbours to detect wormholes. Basic thesis is to find the alternative path from the source to the second jump and calculate the number of hops to detect wormhole.