Wormhole Attack Detection Technique in Mobile Ad Hoc Networks

A wormhole attack is harmful attack against routing protocols in ad hoc network where node attracts packets from one location and retransmits them to other location using long range link within the network. A wormhole attack can be easily launched between two attacker nodes without compromising the mobile nodes. Most of routing protocols don't have any defending technique against wormhole activities; so in the presence of attacker nodes malicious activities may occur and disrupt network communication by tamper the data or forward the message to unknown location of the network to disrupt it functionality. Several routing protocols have been proposed to defend against wormhole attack in mobile ad hoc networks by adapting synchronization clocks, GPS or any special hardware. In this research article, we proposed a novel wormhole detection technique which identifies the wormhole link by calculating the maximum end to end delay between two nodes within the communication range. Mobile nodes do not need to be equipped with GPS, clock synchronized or any other type of special hardware. The simulation results prove that proposed scheme detects wormhole attack.