Intrusion Detection Techniques for Detecting Misbehaving Nodes

A Mobile Ad hoc Network (MANET) consists of a group of autonomous mobile nodes with wireless transmission capability without using any existing infrastructure or centralized administration. The MANET environment is particularly vulnerable due to its dynamic topology, less powerful mobile devices and distributed environment. Current solutions for security are more geared towards wired networks. Therefore, they are not applicable for wireless ad hoc networks and cannot be applied without modifications in this environment. In this paper, we classify the techniques for intrusion detection systems (IDS) that have been introduced for MANETs, and compare some important aspects such as performance and overhead in these techniques. Finally we provide some directions for further research.