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Mobile Ad-hoc NETwork (MANET) is an autonomous system of mobile hosts equipped with wireless communication devices. These mobile nodes can form a network anywhere and at anytime. But the topology of the network thereby formed will be unpredictable due to frequent node movement. For sending data to destination, source node can send directly or can forward via an intermediate node depending upon the range of destination node. Since security is a major concern in ad-hoc network, secure routing algorithm is essential for MANET. Even if there are different algorithms to prevent selfishness in MANET and thereby to make routing in ad-hoc network secure, they have their own disadvantages.
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