Date Added: Jun 2012
In Wireless Mobile Ad hoc NETworks (MANET) every node functions as transmitter, router and data sink is network without infrastructure. Detecting malicious nodes in an open ad-hoc network in which participating nodes have no previous security associations presents a number of challenges not faced by traditional wired networks. Traffic monitoring in wired networks is usually performed at switches, routers and gateways, but an ad-hoc network does not have these types of network elements where the Intrusion Detection System (IDS) can collect and analyze audit data for the entire network. A number of neighbour-monitoring, trust-building, and cluster-based voting schemes have been proposed in the research to enable the detection and reporting of malicious activity in ad-hoc networks.