<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gregory Detal</style></author><author><style face="normal" font="default" size="100%">Benjamin Hesmans</style></author><author><style face="normal" font="default" size="100%">Olivier Bonaventure</style></author><author><style face="normal" font="default" size="100%">Yves Vanaubel</style></author><author><style face="normal" font="default" size="100%">Benoit Donnet</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Revealing Middlebox Interference with Tracebox</style></title><secondary-title><style face="normal" font="default" size="100%">ACM/USENIX Internet Measurement Conference (IMC)</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">middlebox</style></keyword><keyword><style  face="normal" font="default" size="100%">network discovery</style></keyword><keyword><style  face="normal" font="default" size="100%">tracebox</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2013</style></year><pub-dates><date><style  face="normal" font="default" size="100%">10/2013</style></date></pub-dates></dates><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Middleboxes such as firewalls, NAT, proxies, or Deep Pack-et Inspection play an&amp;nbsp;increasingly important role in various types of IP networks, including&amp;nbsp;enterprise and cellular networks. Recent studies have shed the light on their&amp;nbsp;impact on real traffic and the complexity of managing them. Network operators&amp;nbsp;and researchers have few tools to understand the impact of those boxes on any&lt;br /&gt;path. In this paper, we propose tracebox, an extension to the widely used&amp;nbsp;traceroute tool, that is capable of detecting various types of middlebox&amp;nbsp;interference over almost any path. &amp;nbsp;tracebox sends IP packets containing TCP&amp;nbsp;segments with different TTL values and analyses the packet encapsulated in the&amp;nbsp;returned ICMP messages. Further, as recent routers quote, in the ICMP message,&amp;nbsp;the entire IP packet that they received, tracebox is able to detect any&amp;nbsp;modification performed by upstream middleboxes. In addition, tracebox can often&amp;nbsp;pinpoint the network hop where the middlebox interference occurs. We evaluate&amp;nbsp;tracebox with measurements performed on PlanetLab nodes. Our analysis reveals&amp;nbsp;various types of middleboxes that were not expected on such an experimental&amp;nbsp;testbed supposed to be connected to the Internet without any restriction.&lt;/p&gt;</style></abstract></record></records></xml>