Performance Evaluation of AODV under Blackhole attack in MANET using NS2 simulator

A wireless ad-hoc network is a temporary network set up by wireless mobile nodes moving arbitrary in the place that have no network infrastructure. Basically Wireless or mobile networks are evolved to replace the wired networks from traditional scenario to new paradigm. The mobile ad hoc networks are purely infrastructure less network. Due to this vulnerabilities of the network are unprotected to many attacks. In this paper we are discussing about Black hole attack. In this attack a malicious node advertises itself as having the shortest path to specific node to absorb packet to itself. So to identify the possibility of occurrence of black hole attack we simulate AODV protocol with NS2 tool. We also compare the simulation results of with & without Black hole attack in AODV protocol. Our simulation result are end-to-end delay, packet dropping, throughput of packet dropping ratio are justify that black-hole attack are observed. Keywords— Ad hoc Network, Blackhole attack, AODV, MANET.