A Hybrid Intrusion Detection System Against Egoistic and Malicious Nodes in VANET

Abstract

Vehicular ad hoc network (VANET) is considered as the new generation of wireless ad-hoc network that change our lives. This technology aims to make our lives and roads safer via alert messages exchanged between local vehicles and the road side units (RSU). Unfortunately, the constraints caused by the high mobility, shared wireless medium and the absence of centralized security services offered by dedicated equipment makes the security of the VANET more problematic than any other type of network. Therefore, to ensure the security of this network, several security measures have been developed. Intrusion Detection Systems (IDS) is the most popular. In traditional networks, IDS has already proved its expertise in the detection of unauthorized entry and malicious activity. In vehicular ad hoc networks, IDS are in charge of analyzing incoming and outgoing packets to identify malicious signatures. This paper presents the different attacks lead against VANET. We give a brief overview of IDS and the different IDS techniques that are used to struggle against attacks. Also, we propose an IDS hybrid that minimizes the weak points of the clustered IDS based RSU.