Detection and Avoidance of Blackhole Attack in AOMDV Protocol in MANETs
Neetika Bhardwaj, Rajdeep Singh · 2014
Mobile Ad-hoc Networks are formed of several mobile devices which communicate over a shared wireless medium. Due to distributed, infrastructure-less nature and lack of centralized authority of MANETs, the ad-hoc networks are vulnerable to various kinds of attacks. Because of the vast applications of MANET in fields of emergency networks, Secure Routing Protocols are a must for exploiting the functionality of it. Blackhole Attack is one of the most severe attacks because the attacker embeds itself into the route from source to destination by sending false RREP messages giving an impression that it has the freshest route to destination. Seeing its severity many researchers have addressed the problem of detecting and defending against blackhole attack but the solutions presented so far suffered from one problem or the other. In this research paper, we have presented a new solution to detect and prevent the Blackhole which does not increase routing or computation overhead and increases the performance metrics like packet delivery ratio, throughput by a huge margin. Also the false detection ratio of the approach is negligible.