International Journal of Recent Development in Engineering and Technology (IJRDET)
A mobile ad hoc network is an infrastructure less network which is prone to various malicious attacks when incorporated in applications. It is a dreadful task for attaining security to the greatest degree in MANET. This is awaited to the diverse characteristics of mobile ad hoc networks which unlike from well-established infrastructure network. In order to overcome this security challenges the Intrusion detection systems have been deployed in the ad hoc network. In this paper, the authors focus on surveying heterogeneous intrusion detection systems used in MANET for defending various attacks.