Reputation Based IDS for Gray hole Attack in MANETs
Abstract :MANETs are more vulnerable to various attacks, out of which gray hole(selective packet drops) attack is one of the severe attack. The existing security mechanisms are inadequate to detect gray hole attack. In this paper, we propose a reputation based IDS for high detection rate of gary hole attack with less control overhead. Our proposed IDS works based on node independent approach, and key functionalities of this approach are 1) average number of collisions and 2) additive increase/ exponential decrease of node reputation value. Our Simulation results show that the proposed mechanism has a significantly high detection rate which improves network performance such as goodput, packet delivery ratio. FULL PAPER: Reputation Based IDS for Gray hole Attack in MANETs