A PDRR based detection technique for blackhole attack in MANET

An Ad hoc network is the network with no fixed infrastructure. There is no central administrator so any node can come and move in and outside of the network in a dynamic manner. This makes it more dynamic and complex which makes it more prone to attacks. They can attack either active or passive. Some effects of malicious nodes are Denial of service, Routing table overflow, Impersonation, Energy consumption, Information disclosure etc. A blackhole attack node attracts all packets by falsely claiming a fresh route to the destination node and absorbs them without forwarding them to destination. In this paper a mechanism based on PDRR is proposed to detect the blackhole attack in MANET with AODV protocol. An introduction of blackhole in MANET with QUALNET 5.0 is done, after applying the detection technique result reflects the performance degradation. This paper is intended for audience having prior knowledge about network routing protocols and its related quantitative performance metrics. Keywords— Ad hoc Network, Blackhole Attack, AODV, QualNet 5.0, Detection Technique.