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Trust Based Routing for Mitigating Greyhole Attack in MANET: A Rethinking Approach Ullah Kefayat*, Das Prodipto Department of Computer Science, Assam University, Silchar-788011, Assam, India *Corresponding author: kefayat86@gmail.com
Online published on 17 November, 2016. Abstract Mobile Adhoc Network (MANET) is a temporarily formed network created and operated by the nodes themselves without having any centralized infrastructure. Nodes cooperate with each other by passing data and packets from one hop to another. Every nodes act as a router itself for communication. Different protocols have been developed for such type of network. Since the network is dynamic, the topology changes frequently and the network are open to attack and unreliability. Nodes misbehavior due to malicious intention could significantly degrade the performance of MANET. This study reveals with a new Dynamic Source Routing Protocol for MANET based on trust model to mitigate Greyhole attack. Trust is calculated based on trust function. Nodes are selected based on the values of trust function and threshold value. The modified DSR protocol can effectively detect the Greyhole nodes and isolate them from taking part on routing. Top Keywords MANET, trust estimation model, trust value, DSR, RREP, RREQ, Threshold, Greyhole Attack. Top | |
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