Round Trip Time based Wormhole Attacks Detection

The nature of wireless ad hoc and sensor networks make them very attractive to attackers. One of the most popular and serious attack in wireless ad hoc networks is wormhole attacks and most proposed protocols to defend against this attack used positioning devices, synchronized clocks, or directional antennas This paper analyzes the nature of wormhole attack and existing methods of defending mechanism and then proposes round trip time (RTT) based wormhole detection mechanism. The consideration of the detection mechanism is the RTT between two successive nodes to compare other successive. Wormhole is identified based on the fact that transmission time between two fake neighbors created by wormhole is considerably higher than that of each other. The propose system does not require any specific hardware, has good performance and little overhead.