A novel approach to avoid malicious attack to enhance network in WSN

The MANET [mobile ad-hoc network] is most popular and most applicable term and MANET consists of number of mobile nodes, and each independent node in the MANET can communicate with the other node without any wire connections. In the presence of malicious nodes in the MANET, Leads to serious security problem because it will disturb the entire routing processes. So in this paper we are introducing a new method to solve this problem. This papergives a new method called CBDS [co-operative bait discovery method] to detect a malicious attack caused by malicious nodes in the MANET, and establish the efficient route in the network to carry the data from source node to destination node without any data loss and establish the efficient route by using the routing scheme called DSR [Dynamic source routing scheme]. This CBDS method implements a new technique to detect the exact position of malicious nodes in the network called Reverse trapping technique. The CBDS scheme takes the advantage of both proactive and reactive mechanism to achieve the goal of this paper. Simulation results are shown, this simulation results of our CBDS scheme is compare with the existing scheme called DSR scheme in relations of delay, routing overhead, PDR (Packet delivery ratio) and finally Throughput.