With increasing use of wireless networks there is increase in the number of intruder in networks. This could be explained by taking the example of the Mobile ad-hoc Network, as it is a network with no fixed infrastructure, security is the main issue in this network. During the transmission of data from source to destination, any node in network can act as an intruder .The intruder will not allow the successful transmission of the data. So, Intrusion detection system using cuckoo search and decision tree has been designed to detect the intruder node and exclude it from the network. The outcome has been depicted using MATLAB simulator using 45 to 60 nodes. For these nodes there are number rounds for which nodes are plotted. From each round the affected nodes are calculated on the basis of energy consumed by the nodes. The node which consumes maximum energy is the intruder in the network. Optimization of various QOS parameters is performed using Cuckoo search algorithm. The detected intruder is presented using decision tree.

MANET,Cuckoo search algorithm, Intrusion Detection system,Decision Tree

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