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NAT Revelio: Detecting NAT444 in the ISP

  • Andra Lutu
  • Marcelo Bagnulo
  • Amogh Dhamdhere
  • K. C. Claffy
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9631)

Abstract

In this paper, we propose NAT Revelio, a novel test suite and methodology for detecting NAT deployments beyond the home gateway, also known as NAT444 (e.g., Carrier Grade NAT). Since NAT444 solutions may impair performance for some users, understanding the extent of NAT444 deployment in the Internet is of interest to policymakers, ISPs, and users. We perform an initial validation of the NAT Revelio test suite within a controlled NAT444 trial environment involving operational residential lines managed by a large operator in the UK. We leverage access to a unique SamKnows deployment in the UK and collect information about the existence of NAT444 solutions from 2,000 homes and 26 ISPs. To demonstrate the flexibility of NAT Revelio, we also deployed it in project BISmark, an open platform for home broadband internet research. We analyze the results and discuss our findings.

Notes

Acknowledgments

This work has been partially funded by the European Community’s Seventh Framework Program (FP7/2007-2013) grant no. 317647 (Leone). This work was supported by the U.S. NSF grants CNS-1513283 and CNS-1528148 and CNS-1111449. We would like to thank Sam Crawford and Andrea Soppera for their feedback and numerous discussions while designing NAT Revelio, as well as the support for the large-scale deployments of Revelio on the SamKnows UK panel. We also thank Guilherme Martins for his support during the BISmark deployment and Dario Ercole for his help validating NAT Revelio.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Andra Lutu
    • 1
  • Marcelo Bagnulo
    • 2
  • Amogh Dhamdhere
    • 3
  • K. C. Claffy
    • 3
  1. 1.Simula Research LaboratoryLysakerNorway
  2. 2.University Carlos III of MadridGetafeSpain
  3. 3.CAIDA/UC San DiegoSan DiegoUSA

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