Isolation of Sybil attack in VANET using neighboring information

The advancement of wireless communication leads researchers to conceive and develop the idea of vehicular networks, also known as vehicular ad hoc networks (VANETs). In Sybil attack, the WSN is destabilized by a malicious node which create an innumerable fraudulent identities in favor of disrupting networks protocols. In this paper, a novel technique has been proposed to detect and isolate Sybil attack on vehicles resulting in proficiency of network. It will work in two-phases. In first phase RSU registers the nodes by identifying their credentials offered by them. If they are successfully verified, second phase starts & it allots identification to vehicles thus, RSU gathers information from neighboring nodes & define threshold speed limit to them & verify the threshold value is exceed the defined limit of speed. A multiple identity generated by Sybil attack is very harmful for the network & can be misused to flood the wrong information over network. Simulation results show that proposed detection technique increases the possibilities of detection and reduces the percentage of Sybil attack.