Abstract: Security is a key feature in mobile ad hoc networks (MANET) but they are prone to various types of attacks such as network layer attacks. Black hole attack comes under the category of network layer attacks. In Black hole attack, malicious node falsely claims that having shortest path to destination and eventually captures all data packets from source which are intended to forward further to destination. This results into the performance degradation of network and also causes battery problem. In this paper, some of the detection techniques are discussed which are put forward by various researchers. By studying those techniques, new detection mechanism is proposed in this paper.
Keywords: AODV, Black hole attack, Malicious node, Mobile Ad hoc network, Routing protocols etc.