earticle

영어

Vehicular ad hoc network (VANET) has become most predominant on account of their usage in a vehicle to vehicle communication. But one of the major challenges in this network is the mobility of nodes involves in the communication. Either single-hop or multi-hop communication is used within the vehicle to vehicle communication. There are reactive, proactive, and hybrid routing protocols that are generally used within the multi-hop communication and for the path establishment, a reactive routing protocol named AODV is primarily used. Because of the decentralized nature of the network, there is a possibility of various attacks that reduce the performance of the network. One of the most devastating attacks is the Sybil attack which destroys the privacy of networks. This paper proposes a novel approach for the detection and isolation of the malicious nodes that are responsible for causing Sybil attack in VANETs through an improvement in the AODV protocol and thus the overall performance of the network is improved. Moreover, the proposed approach is compared with the existing one in terms of metrics like delay, packet loss, overhead, and throughput using the network simulator. Results confirmed that the proposed approach is quite effective in handling the network under the impact of a Sybil attack.