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Mobile ad hoc network (MANET) has been a challenging field with its foremost criteria like heterogeneity of nodes, dynamic topology, energy constraint and security over the years. MANETs are globally popular for their cost-effectiveness ease of access and configuration. However, MANETs are vulnerable to many types of attacks like Blackhole, Wormhole, Grayhole, etc., which makes MANETs pretty much risky to rely upon when scaling up on a large scale. Under mobile ad hoc networks, all the transmission between the mobile nodes occurs wirelessly. Due to the infrastructure-less, self-organizing and dynamic nature of the nodes, it is an arduous task to enforce any security solutions against these kinds of vulnerabilities. Ad hoc on-demand vector (AODV), a supremely significant route-on-demand routing protocol for MANET, relies on the routing table at each intermediate node location. In this paper, we are mainly analyzing the performance of a MANET under Grayhole attack as per AODV routing protocol using NS-2 simulation environment. |
