Neutralité du réseau

Résumé

thumb|Symbole de la neutralité du réseau La neutralité du Net ou la neutralité du réseau est un principe devant garantir l'égalité de traitement de tous les flux de données sur Internet. Ce principe exclut par exemple toute discrimination positive ou négative à l'égard de la source, de la destination ou du contenu de l'information transmise sur le réseau. Tim Wu, professeur de droit à l'université Columbia à New York, a popularisé le concept de neutralité de la Toile (net neutrality) dans un article paru en 2003 et intitulé Network Neutrality, Broadband Discrimination. Alors que les équipements techniques du réseau Internet rendent possible depuis les années 2000 une gestion sélective, voire discriminatoire, du trafic, d'importants débats politiques ont lieu depuis le début de la décennie 2010 pour décider si ce principe doit être garanti par la législation. En France, l'organisme chargé de veiller au respect de la neutralité du réseau est l'Autorité de régulation des communications

Source officielle

https://fr.wikipedia.org/wiki/Neutralit%C3%A9_du_r%C3%A9seau

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Network Neutrality Inference using Network Tomography

Ovidiu Sebastian Mara

Our work studies network neutrality, a property of communication networks which means that they treat all traffic the same, regardless of application, content provider or communication protocol. This is an important problem, because sometimes users suspect their ISPs of violating network neutrality, but apply inaccurate methods to check their suspicions, reaching incorrect conclusions. Prior non-neutrality detection methods either provide only detection, but lack localization capabilities; or also perform localization, but assume perfect measurements. For the latter, we show that, in practice, the measurement process can severely impact the results. We present a method that performs both non-neutrality detection and localization, using only end-to-end measurements, and assuming an imperfect measurement process. We identify the sources of measurement error that may affect our method, we address them, and evaluate the method extensively with simulations, emulations and experiments on the Internet. We also use our method in two studies, investigating suspicions that a set of ISPs prioritize speed-test traffic, or differentiate against BitTorrent traffic; despite circumstancial evidence that they do, we obtain reliable evidence to the contrary. Finally, we present the network emulator that we built to evaluate our method, hoping that it will be a useful tool in future research. We conclude that it is feasible to detect and localize network neutrality violations based solely on end-to-end measurements, without assuming a perfect measurement process; and that it is important that reasoning about network neutrality is based on reliable evidence of network behavior.

EPFL2018

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Network Neutrality Inference

Ovidiu Sebastian Mara, Zhiyong Zhang

When can we reason about the neutrality of a network based on external observations? We prove conditions under which it is possible to (a) detect neutrality violations and (b) localize them to specific links, based on external observations. Our insight is that, when we make external observations from different vantage points, these will most likely be inconsistent with each other if the network is not neutral. Where existing tomographic techniques try to form solvable systems of equations to infer network properties, we try to form unsolvable systems that reveal neutrality violations. We present an algorithm that relies on this idea to identify sets of non-neutral links based on external observations, and we show, through network emulation, that it achieves good accuracy for a variety of network conditions.

2014

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Network Neutrality Inference

Ovidiu Sebastian Mara, Zhiyong Zhang

2014

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