Fidelity Based On Demand Secure(FBOD) Routing in Mobile Adhoc Network

: In mobile ad-hoc network (MANET), secure routing is a challenging issue due to its open nature, infrastructure less property and mobility of nodes. Many mobile ad-hoc network routing schemes have been proposed, but none of them have been designed with security as a goal. We propose security goals for routing in mobile ad-hoc networks, an approach significantly different from the existing ones where data packets are routed, based on a specific criterion of the nodes called “fidelity” The approach will reduce the computational overhead to a lot extent. Our simulation results show how we have reduced the amount of network activity for each node required to route a data packet and how this scheme prevents various attacks which may jeopardize any MANET. Keywordsfidelity; sequence number; hop destination; flooding attack; black hole attack; co-operative black hole attac,routing.