{"id":8141,"date":"2014-02-17T08:33:11","date_gmt":"2014-02-17T08:33:11","guid":{"rendered":"https:\/\/networks.imdea.org\/separar-el-trigo-de-la-paja\/"},"modified":"2020-10-21T13:13:40","modified_gmt":"2020-10-21T11:13:40","slug":"separar-el-trigo-de-la-paja","status":"publish","type":"post","link":"https:\/\/networks.imdea.org\/es\/separar-el-trigo-de-la-paja\/","title":{"rendered":"Separar el trigo de la paja"},"content":{"rendered":"<p><\/p>\n<p>Una investigadora predoctoral de IMDEA Networks, <a href=\"http:\/\/people.networks.imdea.org\/~andra_lutu\/\">Andra Lutu<\/a>, es coautora de un art&iacute;culo que ser&aacute; publicado en <a href=\"http:\/\/www.ieee-infocom.org\/\">IEEE INFOCOM 2014<\/a> (33<sup>rd<\/sup> Annual IEEE International Conference on Computer&nbsp;Communications), un congreso clave en la investigaci&oacute;n sobre redes inform&aacute;ticas.<\/p>\n<p>Este trabajo &#8211; <a href=\"http:\/\/eprints.networks.imdea.org\/id\/eprint\/688\">Separating Wheat from Chaff: Winnowing Unintended Prefixes using Machine Learning<\/a> &#8211; se centra en una cuesti&oacute;n operativa apremiante para el enrutamiento entre dominios de Internet, a saber, que la visibilidad y la consiguiente accesibilidad, de un bloque de direcciones de red tal y como es generado por el Border Gateway Protocol (BGP ) puede no responder a las expectativas del proveedor de servicios de Internet (ISP) que origina ese prefijo. En particular, la intenci&oacute;n del ISP pudiera ser que un prefijo sea visible a nivel global, sin embargo, debido a una mala configuraci&oacute;n, disputas normativas, y otras cuestiones operativas relacionadas con el BGP, el prefijo pudiera acabar como un prefijo de visibilidad limitada (Limited Visibility Prefix &#8211; LVP), y por tanto visible e incluso accesible s&oacute;lo desde una parte de la Internet. Detectar y corregir tales problemas es extremadamente dif&iacute;cil y esta es exactamente la ambiciosa tarea que se propone resolver esta publicaci&oacute;n.<\/p>\n<p>Los autores han construido una herramienta novedosa, que han puesto a libre disposici&oacute;n de la comunidad de Internet: el esc&aacute;ner de visibilidad BGP o <a href=\"http:\/\/visibility.it.uc3m.es\/\"><em>BGP Visibility Scanner<\/em><\/a>. A su vez, la soluci&oacute;n algor&iacute;tmica de aprendizaje de m&aacute;quinas propuesta en este estudio para detectar los LVP no deseados se basa en la retroalimentaci&oacute;n directa de los operadores de redes, que ya han utilizado el BGP Visibility Scanner en la resoluci&oacute;n de problemas reales que se plantean en la pr&aacute;ctica diaria de Internet.<\/p>\n<p>Este avance cient&iacute;fico es el resultado del trabajo de colaboraci&oacute;n entre Andra Lutu, Estudiante de Doctorado en IMDEA Networks Institute y Universidad Carlos III de Madrid (UC3M), <a href=\"http:\/\/www.it.uc3m.es\/~marcelo\/\">Marcelo Bagnulo<\/a> y <a href=\"http:\/\/www.tsc.uc3m.es\/ficha_inv.php?idDocente=9\">Jes&uacute;s Cid-Sueiro<\/a>, ambos de la UC3M, y <a href=\"http:\/\/www.maennel.net\/\">Olaf Maennel<\/a>, afiliado a Loughborough University (Reino Unido). INFOCOM&nbsp;2014 se celebrar&aacute; en Toronto, Canad&aacute;, desde el 27 de abril al 2 de mayo de 2014.<\/p>\n<p><strong>Abstract: <\/strong><\/p>\n<p>In this paper, we propose the use of prefix visibility at the interdomain level as an early symptom of anomalous events in the Internet. We focus on detecting anomalies which, despite their significant impact on the routing system, remain concealed from state of the art tools. We design a machine learning system to winnow the prefixes with unintended limited visibility &ndash; symptomatic of anomalous events &ndash; from the prefixes with intended limited visibility &ndash; resulting from legitimate routing operations. We train a winnowing algorithm with ground-truth data on 20,000 operational limited visibility prefixes (LVPs) already classified by the operators of the origin networks. The ground-truth was collected using the BGP Visibility Scanner, a tool we developed to provide operators with a multi-angle view on the efficacy of their routing policies. We build a dataset with the pre-classified prefixes and the features describing their visibility status dynamics. We further use this dataset to derive a boosted decision tree which winnows unintended LVPs with an accuracy of 95%.<\/p>\n<p><\/p>","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":8142,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[494],"class_list":["post-8141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sin-categoria","tag-machine-learning"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Separar el trigo de la paja - IMDEA Networks<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/networks.imdea.org\/es\/separar-el-trigo-de-la-paja\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Separar el trigo de la paja - 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