Packet Monitor Scheme for Prevention of Black-hole Attack in Mobile Ad-hoc Network

Mobile ad hoc networks (MANETs) are extensively used in military and civilian applications. The dynamic topology of MANETs allows nodes to join and leave the network at any point of time. This generic characteristic of MANET has rendered it vulnerable to security attacks. In our research, we will address the problem of black hole attack. In this attack, a malicious node falsely advertise shortest path to the destination node with an intension to disrupt the communication. We propose a solution to the black hole attack in one of the most prominent routing algorithm, ad-hoc on demand distance vector (AODV) routing, for the MANETs. The proposed method detect malicious node (black hole) and propagates the information of malicious node to all the other nodes in the network. The proposed method use neighbor hop concept this technique identify black hole attack and provide a solution for avoiding black hole