Improving Performance of AODV Protocol Using Gossip Based Approach
ICCIMA '07 Proceedings of the International Conference on Computational Intelligence and Multimedia Applications (ICCIMA 2007) - Volume 04
Analysis of Unicast Routing Protocols for VANETs
ICNS '09 Proceedings of the 2009 Fifth International Conference on Networking and Services
An Improvement of AODV Protocol Based on Reliable Delivery in Mobile Ad Hoc Networks
IAS '09 Proceedings of the 2009 Fifth International Conference on Information Assurance and Security - Volume 01
Securing AODV against wormhole attacks in emergency MANET multimedia communications
Proceedings of the 5th International ICST Mobile Multimedia Communications Conference
A Novel Approach for Avoiding Wormhole Attacks in VANET
IWCSE '09 Proceedings of the 2009 Second International Workshop on Computer Science and Engineering - Volume 02
Wormhole attacks in wireless networks
IEEE Journal on Selected Areas in Communications
IEEE Network: The Magazine of Global Internetworking
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Collaborative wormhole attacks create links within MANETs, and tunnel data to undesired destinations through the links. By doing so, wormholes compromise network performance, security, and may even bring down an entire network. We evaluate the impacts of collaborative wormhole attacks in MANETs, through simulations using AODV protocol in NS2. At first, we ran the simulation without collaborative wormhole nodes. We increased the number of nodes from 20 by an increment of 10 until 60 in every run. Every time we increased the node size, we ran the simulation 50 times and recorded the average. We then used the output collected to evaluate the average throughput and packet overhead. We repeated the same experiment with four collaborative wormhole nodes added to the network and collected results both for throughput and packet overhead. Our results show that there was a higher increase in throughput when no wormhole nodes were present than when collaborative wormhole nodes were introduced. For packet overhead, the simulations show that when collaborative wormhole nodes were added to the network, the packet overhead increased at a higher rate than when no wormhole nodes were present. The results show that collaborative wormholes negatively affect MANETs by reducing throughput and increasing packet overhead.