Eliminating Selective Dropping Attack in Mobile Ad Hoc Network

In this paper, we propose a new reputation approach, called I-WD (improved WatchDog). We attempt to eliminate selective dropping attack that ensue when malicious nodes drop packets at low rates damage the network without been detected. The proposed approach is structured around four modules. monitoring module overhears forwarding activities of neighboring using promiscuous mode. evaluates values. have method enables evaluate their neighbors in multiple sessions. Thus, computed value used determine increment and decrement rate. exclusion accountable for excluding with values below threshold. route selection make restriction about discovered routes. Only routes satisfy incorporation threshold are accepted. simulation results demonstrate improves success rate reduces number dropped by nodes, while increases end-to-end delay.