As in wireless network there is necessity of nodes cooperation to transfer packets from one node to another this property makes it vulnerable to wide range of attacks at different layer. Wormhole attack is one of the most destructive severe attack in which malicious node captures the traffic at particular location and tunnels it to another part of tunnel that is far away. In network security is generally equated by strong and feasible authentication and adopting methods of encryption and decryption. However this attack is hardly defeated as they do not use any additional effort to deploy nor create any extra packets. They simply capture packets then either drop them or replay in existing network, which make them to pass from any type of cryptographic checks and authentication Work done in this field have generally focused on use of additional hardware like directional antenna. In this paper, we present a cluster based counter-measure for the wormhole attack that alleviates these drawbacks and efficiently mitigates the wormhole attack in MANET. Simulation results shown on NS2 display the effectiveness of the proposed method for detecting and preventing wormhole attack.

MANET Wormhole Cluster Monitor Node Routing.