Detection and Prevention of Routing Attacks with NCPR Protocol for MANETs
Radhu. R. Nair · 2014
Abstract— Mobile ad hoc networks (MANETs) is a dynamic network which the mobile node does not have any infrastructure. Link breakages exist due to its high mobility of nodes which leads to frequent path failures and route discoveries. In broadcasting mechanism, the mobile node blindly rebroadcasts the first received route request, even if there is no route to destination leads to broadcast storm problem. Attacks are the main issues in Mobile ad hoc networks such as DoS, Wormhole attacks etc. In this paper an Attack Detection and Prevention algorithm (ADPA) is implemented with Neighbor Coverage based Probabilistic Rebroadcast Protocol (NCPR) for ensuring security along with improved performance in the network. ADPA detects and prevents the attacker nodes more effectively. The neighbor coverage based probabilistic rebroadcast protocol, exploits the neighbor coverage knowledge by rebroadcast delay and obtains additional coverage ratio. Connectivity factor is defined and it is combined with additional coverage ratio to set rebroadcast probability. The neighbor coverage and probabilistic mechanism significantly decreases the number of retransmissions so as to reduce the routing overhead.