Salim Lachdhaf¹, Mohammed Mazouzi² and Mohamed Abid², ¹University of Gabes, Tunisia and ²University of Sfax, Tunisia

Vehicular ad hoc networks (VANETs) are becoming popular and promising technologies in the modern intelligent transportation world. They are used to provide an efficient Traffic Information System (TIS), Intelligent Transportation System (ITS), and Life Safety. The mobility of the nodes and the volatile nature of the connections in the network have made VANET vulnerable to many security threats. Black hole attack is one of the security threat in which node presents itself in such a way to the other nodes that it has the shortest and the freshest path to the destination. Hence in this research paper an efficient approach for the detection and removal of the Black hole attack in the Vehicular Ad Hoc Networks (VANET) is described. The proposed solution is implemented on AODV (Ad hoc On demand Distance Vector) Routing protocol one of the most popular routing protocol for VANET. The strategy can detect both the single Black hole attack and the Cooperative Black hole attack in the early phase of route discovery. The simulation is carried on NS2 and the results of the proposed scheme are compared to [14] and the fundamental AODV routing protocol, this results are examined on various network performance metrics such as packet delivery ratio, throughput and end-to-end delay. The found results show the efficacy of the proposed method as throughput and the delivery ratio of the network does not deteriorate in presence of the back holes

VANET, Black hole attack, Security, AODV