Impact of Jelly Fish Attackon the Performance of DSR Routing Protocol in MANETs

Mobile Ad-hoc Networks (MANETs) could be setup frequently without the need of pre-established infrastructure. The nodes in MANETs are free to move and they can join as well as leave the network. Due to the dynamic nature of nodes in MANETs, routing protocols in MANET are extremely vulnerable to different security attacks. Like other different security attacks, Jellyfish attack is one of the most dangerous attacks in MANETs environment and it degrades the overall performance. In such type of attack, the packets reached its destination but take more time and hence it is difficult to detect such attack. In this research paper, we have analyzed the performance of Dynamic Source Routing (DSR) routing protocol in the presence of Jellyfish attack. To evaluate the performance we have created different scenarios having various number of Jellyfish attacks in MANETs environment. From the simulation result, it has been observed that Jellyfish attack significantly degrades the performance of DSR protocol in terms of end to end delay, throughput and packet delivery ratio. Moreover it has also been observed that when the number of Jellyfish attacks increases in the network then the performance is further degraded. In this research OPNET Modeler 14.5 simulator has been used in order to assess the performance of Jellyfish attack in MANETs environment.