Approach of Malicious Nodes and Environmental in Vehicular Ad-Hoc Networks

Abstract

Vehicular Adhoc Network (VANET), a specialized form of MANET in which safety is the major concern as critical information related to driver’s safety and assistance need to be disseminated between the vehicle nodes. The security of the nodes can be increased, if the network availability is increased. The characteristics of VANETs, such as high mobility, network partitioning, intermittent connectivity and obstacles in city environments, make routing a challenging task. Due to these characteristics of VANETs, the performance of a routing protocol is degraded. The position-based routing is considered to be the most significant approach in VANETs.

 The availability of the network is decreased, if there is Denial of Service Attacks (DoS) in the network.. This technology establishes connection among cars about 100 to 300 meters of each other and, thus, generates a wide-ranging network. In the current scenario, remarkable growth in the vehicles’ quantity deployed with computational tools and wireless devices has contributed in the evolution of new application strategies that were impossible in the past. in this paper , DoS affects network performance greatly with regard to throughput and other metrics. threshold- based technique is devised for eradicating adversaries from the vehicular network. The proposed algorithm was NS2 simulator for applying the new approach and outcomes are compared in terms of routing overhead, throughput and packetloss. It is analyzed that in terms of every parameter new approach works more effciently in contrast to the approaches presented in the past.