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An Efficient Approach to Identify Selfish Node in MANET

Mobile Ad hoc Network is a collection of autonomous mobile nodes connected with each other without any central coordinator. There is several security issues arise in MANET due to dynamically changing network topology. The reliable communication is achieved only when there exists cooperation among the mobile nodes in MANET. Due to the lack of resources some mobile nodes refuse to forward the packet to other nodes. This type of nodes is called the selfish nodes. These kind of selfish nodes in the route degrade the overall performance of the whole network. In this paper we discussed about the various selfish node detection methods and propose a selfish node detection algorithm (SNDA) for identifying and isolation of selfish node from the network.