Acknowledgement Based Multipath Routing Scheme For Detecting Mallicious Nodes In MANET?

Mobile ad hoc networks (MANETs) consist of a collection of wireless mobile nodes which dynamically exchange data among themselves without the reliance on a fixed base station or a wired backbone network. MANET nodes are typically distinguished by their limited power, processing, and memory resources as well as high degree of mobility. In such networks, the wireless mobile nodes may dynamically enter the network as well as leave the network. Due to the limited transmission range of wireless network nodes, multiple hops are usually needed for a node to exchange information with any other node in the network. Thus routing is a crucial issue to the design of a MANET. While receiving data, nodes also need cooperation with each other to forward the data packets, thereby a wireless local area network will form. These great features also come with serious drawbacks from a security point of view. For instance, the presence and collaboration of malicious nodes in the network may disrupt the routing process, and leads to a malfunctioning of the network operations. This work aims to identify the malicious nodes by using the novel approach called Acknowledge Based Route Discovery (ABRD), and also to provide alternative path using multipath routing algorithm, if such malicious node/nodes detected in routing path, during the route discovery. And also maintain blacklist of such malicious nodes so that all the nodes can be alerted not to use any route in which detected malicious node is participating. And the propose work implemented in NS2.