A Review Paper on Cluster Based Ant Defence Mechanism Technique For Attack In MANET

A selective forwarding attack is one of the most crucial security problems in MANET. Usually such attacker degrades the network performance in terms of packet loss rate, collision, and overhead. Designing MANET that can work reliably even in the presence of inside packet drop attackers is really challenging. In ant based defense mechanism we have implemented S-ACK scheme to transmit the secure acknowledgement. To detect attackers, a trust model is designed. The Forward ant agents transmit back the digitally signed SACK through the Backward Ant agent to detect any selective forwarding attack against any source node. Cluster distributes traffic among diverse multiple paths to avoid congestion, which optimizes bandwidth using and improves the sharing rate of channel. It uses clustering’s hierarchical structure diverse to decrease routing control overhead and improve the networks scalability. By implementing the algorithm on the OPNET environment, the result shows that this algorithm balances the load of the network and deals with the change effectively of the network topology, and also improves the reliability, throughput and stability of the network efficiently.