A countermeasure against wormhole attacks in MANETs using analytical hierarchy process methodology

Mobile ad hoc networks are vulnerable to a large group of attacks, e.g., wormhole attacks. In this paper, we propose a countermeasure to prevent wormhole attacks. We utilize analytical hierarchy process to elect some special nodes, named the local most trustable nodes, for the source and the destination node, respectively. The elected nodes are then required to implement our proposed scheme to prevent wormhole attacks. The proposed scheme cannot only detect wormhole attacks, but also locate wormhole nodes, i.e., identify the malicious nodes that behave wormhole attacks. To solve the colluding wormhole attack, we present a countermeasure named bi-directional wormhole location mechanism.