Impact Of Black Hole Attack On Aodv Routing Protocol

A mobile ad-hoc network (MANET) is a collection of wireless mobile nodes that dynamically self-organize to form an arbitrary and temporary network. The mobile nodes can communicate with each other without any fixed infrastructure. MANET can be set up quickly to facilitate communication in a hostile environment such as battlefield or emergency situation. The various severe security threats are increasing on the MANET. One of these security threats is black hole attack which drops all received data packets intended for forwarding. In this paper, we are simulating and analyzing the impact of black hole attack on Ad Hoc On-Demand Distance Vector (AODV) protocol. The simulation is carried on NS-2 and the simulation results are analyzed on various network performance metrics such as packet delivery ratio, normalized routing overhead and average end-to-end delay.