Detection and Elimination of Wormhole Attacks in a MANET

Abstract

Wormhole attacks in Mobile ad hoc networks is impermeable to traditional security measures. The attack can be launched regardless of the MAC, routing, or security protocol used in the network. Two or more malicious nodes in conspiracy usually perform the wormhole attack. Two malicious nodes at different locations send received routing messages to each other via a secrete channel. In this way, although the two malicious nodes are located far from each other, they appear to be within one-hop communications range. Wormhole nodes can successfully execute such attacks without compromising any computer, and are inevitable even though some ad hoc wireless networks provide authenticity and confidentiality protection. Practically all widespread security extensions are proposed for popular routing protocols but they do not alleviate wormhole attacks. However, since wormhole attack such a severe thread to MANET security. In this situation wormhole attack methodology presented is motivated by WARP and the same procedure and terminology is used but slight modification In this work wormhole attack is detected and eliminated by simply modifying AODV routing protocol and its performance is measured.