دانلود رایگان مقاله تامبلر: دسترسی به لینک مناسب در اینترنت bots-infested

Abstract

Despite large-scale flooding attacks, capability-based defense schemes provide end hosts with guaranteed communication. However, facing the challenges of enabling scalable bandwidth fair sharing and adapting to attack strategies, none of the existing schemes adequately stand. In this paper we present Tumbler, a flooding attack defense mechanism that provides scalable competition-based bandwidth fairness at the Autonomous System (AS) granularity, and on-demand bandwidth allocation for end hosts in each AS. Tumbler enforces adaptability in the capability establishment via competition factors that are calculated upon leaf ASes’ bandwidth utilization and reputation. Transit ASes independently manage each competition factor based on the corresponding feedback from dedicated bandwidth accounting and monitoring policies. Through Internet-scale simulations, we demonstrate the effectiveness of Tumbler against a variety of attack scenarios and illustrate the deployment benefits for ISPs.

9. Conclusion

This paper has presented Tumbler, an adaptable DDoS resilient mechanism in the Internet scale. Tumbler provides bandwidth guarantees for end hosts through competition-based fairness. Comprehensive simulations under sophisticated flooding strategies show that Tumbler achieves more effective protection than other capability schemes. Moreover, Tumbler introduces minimal overhead on traversing routers. We believe that Tumbler brings substantial adoption incentive to ISPs. To confirm the property of our approach, a full implementation of Tumbler is suggested for future work.