A Detail Survey of Various Security Issues in Vehicular Adhoc Network

Vehicular Ad hoc Networks (VANET) is the subclass of Mobile Ad Hoc Networks (MANETs). It is the most advanced technology that provides Intelligent Transportation System (ITS) in wireless communication among vehicles to vehicles and road side equipment (RSUs) to vehicles according to IEEE 802.11p standard. VANET provides broad range of safety and non safety applications. Safety application provides safety to the passengers such as lane change warning, collision detection etc. It also provides comfort and commercial applications to the road users such as electronic toll collection, audio/video exchanging, electronic payments, route guidance, weather information, mobile Ecommerce, internet access etc. It provides great comfort to passengers. But some vehicles with an evil intention (or malicious node) attack other vehicles. There are many attacks possible in VANET. This paper represents description of Denial of service attack, Sybil attack and Wormhole attack with the help of diagram. Keywords— VANET, MANET, ITS, IEEE 802.11p, Sybil attack, DOS attack, Wormhole attack, Attacks