Enhancing Vehicular Ad-hoc Networks Security using Intrusion Detection System Techniques

The deployment of vehicular ad hoc networks has greatly increased the risks caused by the attacks on vehicular networks, that represents a real problem for road safety. To secure this network against these attacks, several methods and techniques have been developed. Intrusion Detection System (IDS) is an attack countermeasure that listens to network traffic in a sneaky manner in order to identify abnormal or malicious activities and thus to have a preventive action on the risks of intrusion. IDS has already proved its worth in detection of malicious nodes in traditional networks, but in VANET, using IDS is difficult due to its peculiar characteristics such as high mobility, Dynamic topology, Anonymity of the support. In this paper, we present some possible types of attacks against VANET to get the readers well acquainted with the attacks and threats threatened to vehicular network. After, we introduce different IDS technique for succeeded by analyzing and comparing each technique along with merits and demerits, and conclude the best method between them. Finally, we propose a solution to minimize the weak points of Watchdog and Pathrater and IDS clustred based RSU.