A Novel Scheme for Preventing Wormhole Attacks in Wireless Ad Hoc Networks

Nowadays, wireless ad hoc networks become more and more popular and significant in many fields. However, the important applications of wireless ad hoc networks make them very attractive to attackers. In addition, the deployment scenarios, the functionality requirements and the limited capabilities of these types of networks make them vulnerable to a large group of attacks, e.g., wormhole attacks. In this paper we introduce a scheme to detect the existence of wormhole attacks in the networks. And then for the purpose of locating wormhole nodes, we propose a scheme to indicate the wormhole nodes. Moreover, considering the fraudulence of wormhole nodes, we propose an improved method named bidirectional location mechanism.