Secure On-demand Routing Protocol in VANETS.

VANET is a special case of MANET due to additional features like high mobility of vehicular nodes, road network pattern, and use of GPS system. Communication takes place by determining the path to the destination vehicular node with the help of routing protocol. Routing algorithms have security vulnerabilities and due to these vulnerabilities, vehicular networks are not protected from attacks. Attack like black-hole attack which makes network unavailable and absorbs all packet information. Therefore, data packets will not reach the destination node and hence, data loss occurs. So, it is necessary to eliminate the effect of the attack, so that data packets will reach their destination node. In this paper, we performed attacks in different VANET scenarios by changing the number of attacks and mobility of nodes on the network simulator (NS2). Attack was simulated on different networks which used On-demand routing mechanisms like AODV & AOMDV and have tried to find a result that is more secure.