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In Mobile Ad-hoc NETworks (MANETs), the malicious flooding attack is very hazardous since it not only clogs the victim node but also the entire network. Also it may cause packet drops or alteration of the routing message that will further result in network dysfunctioning. In this paper, the authors propose a swarm based detection and defense technique for malicious attacks in Mobile Ad-hoc NETworks (MANET). In this technique, the nodes with highest trust value, residual bandwidth and residual energy are selected as active nodes using swarm intelligence based ant colony optimization.
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