Routing Misbehabiour in Mobile Ad Hoc Network

MANET is a collection of wireless nodes that can dynamically form a network to exchange information without using any pre-existing fixed network infrastructure. In general, routing protocols for MANETs are designed based on the assumption that all participating nodes are fully cooperative. Adhoc Network in the presence of nodes that agree to forward data packets but fail to do so, for example a node become selfish and refuse to forward data packets to other nodes or the node fail to forward data packet to the destination node or because of limited power, a node could enter an inactive state. Where routing itself a core challenge in mobile adhoc network, there are still some threats to the existing traditional routing mechanisms as adopted by mobile ad-hoc network. Our work focuses on to improve the performance of on demand routing algorithm in an ad hoc network in the presence of black hole nodes.

In this work, we will address the question how to enable a system to operate in the presence of misbehaviour (black hole). Here I have proposed a bluff probe approach to detect and prevent black hole attacks in the Mobile Ad-hoc Networks. To achieve this we have simulated the Mobile ad-hoc network scenarios which includes Black Hole node using NS-2.34 Network Simulator program.