Abstract
Mobile ad hoc network (MANET) is lacking infrastructure support, so nodes of MANET are vulnerable to attacks. Denial of Service attacks (DOS) makes network inaccessible to users. Black hole attack is a type of DOS attack, in which mischievous node claims that it has a route towards the destination node. Ad Hoc on Demand Distance Vector (AODV) routing protocol is affected by Black hole attack. The proposed solution is based on first Route Reply (RREP) caching mechanism in AODV protocol. Simulation results show performance improvement in routing protocol.
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