Secure geographic routing protocol in MANETs

GEOGRAPHIC routing protocols use a basic geographic forwarding strategy to forward packets node by nodes toward the location of the destination. This approach to routing has the advantage of eliminating the need for nodes to maintain conventional routing information. One geographic routing protocol named Boundary State Routing protocol which routes the data using the location of nodes. In this paper we discussed possible attacks in boundary state routing protocol namely wormhole attacks and proposed two methods to avoid wormhole attacks namely Counter March Technique (CMT) and Signature Based Verification Technique (SBVT). The CMT method uses no methodology for the detection of the malicious nature of the intermediate nodes. SBVT method uses cryptographic concepts.