A Packet Forwarding Mechanism for MANET Using MODRP in Dynamic Source Routing (DSR)

An ad hoc network is a collection of computers (nodes)that cooperate to forward packets for each other over a multihop wireless network. Users of such networks may wish to use demanding applications such as Voice over IP, videoconferencing, and streaming media when they are connected through an ad hoc network. Because over provisioning, a common technique in wired networks, is often impractical in wireless networks for reasons such as power, cost, and government regulation, Quality of Service (QoS) routing is even more important in wireless networks than in wired networks. Though a number of QoS-routing protocols have been proposed for use in ad hoc networks, security of such protocols has not been considered. Here in this paper we consider about securing the Distance vector protocol. For securing distance vector protocols, our hash tree chain mechanism forces a router to increase the distance (metric) when forwarding a routing table entry. To provide authentication of a received routing update in bounded time, we present a new mechanism, similar to hash chains, that we call tree- authenticated one-way chains.