
{"id":298,"date":"2007-12-21T16:11:23","date_gmt":"2007-12-21T19:11:23","guid":{"rendered":"https:\/\/www.talsoft-security.com\/site\/?p=298"},"modified":"2007-12-21T16:11:23","modified_gmt":"2007-12-21T19:11:23","slug":"experiencia-con-skype","status":"publish","type":"post","link":"https:\/\/www.talsoft-security.com\/site\/experiencia-con-skype\/","title":{"rendered":"Experiencia con Skype"},"content":{"rendered":"<p>Vuelvo para comentarles mi experiencia con Skype detr\u00c3\u00a1s de un Proxy, en la cual el problema radicaba que la conexi\u00c3\u00b3n de Skype entre un per\u00c3\u00adodo de 2 horas aproximadamente (aunque a veces no segu\u00c3\u00ada este patr\u00c3\u00b3n), se reconectaba en algunas m\u00c3\u00a1quinas de los usuarios.<br \/>\nPrimero plantearles el escenario en la que me encontraba, podemos decir que las m\u00c3\u00a1quinas internas se conectaban a trav\u00c3\u00a9s de un Linux Centos en una VMWare 6.0.2 con la instalaci\u00c3\u00b3n de:<\/p>\n<p>&#8211; Squid Proxy 2.6 stable<br \/>\n&#8211; Dansguardian<br \/>\n&#8211; Clamv<\/p>\n<p>En principio realice varios testeo snifeando la conexi\u00c3\u00b3n del skype con las siguientes pruebas:<\/p>\n<p>&#8211; Snifeo con Skype sobre NAT<br \/>\n&#8211; Snifeo con Skype sobre Proxy<br \/>\n&#8211; Snifeo con Skype sobre Proxy con HTTPS<\/p>\n<p>Con estos testeos se observo que la m\u00c3\u00a1quina que actuaba como Proxy, finalizaba la conexi\u00c3\u00b3n con el Skype de algunos usuarios, pero no as\u00c3\u00ad sobre NAT. Y as\u00c3\u00ad le obligaba al Skype a reconectarse nuevamente, este problema sigui\u00c3\u00b3 apareciendo, aun cambiando la configuraci\u00c3\u00b3n del Proxy.<br \/>\nAdem\u00c3\u00a1s, se prob\u00c3\u00b3 la conexi\u00c3\u00b3n del Skype, pero paralelamente con el Proxy Squid 2.6, con el software 3Proxy, pero el problema de reconexi\u00c3\u00b3n apareci\u00c3\u00b3 nuevamente sacando de lado que el problema era del Proxy Squid o Dansguardian.<\/p>\n<p>Toda esta experiencia sirvi\u00c3\u00b3 para conocer un poco mas el funcionamiento del Skype, aunque todav\u00c3\u00ada no se encontr\u00c3\u00b3 el motivo de ese problema, se minimiz\u00c3\u00b3.  Aunque queda claro que haciendo NAT sobre un puerto o a servidores que proveen un servicio, se solucionar\u00c3\u00ada este problema, pero como se sabe Skype es una Caja Negra y esta preparado para traspasar Firewall y adem\u00c3\u00a1s se conecta a varios SuperNodos Din\u00c3\u00a1micamente y se actualiza esa lista en forma autom\u00c3\u00a1tica, con lo cual no se tiene un par\u00c3\u00a1metro definido a que servidores se podr\u00c3\u00ada conectar.<\/p>\n<p>Saludos,<br \/>\nIng. Leandro Ferrari<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vuelvo para comentarles mi experiencia con Skype detr\u00c3\u00a1s de un Proxy, en la cual el problema radicaba que la conexi\u00c3\u00b3n de Skype entre un per\u00c3\u00adodo de 2 horas aproximadamente (aunque a veces no segu\u00c3\u00ada este patr\u00c3\u00b3n), se reconectaba en algunas m\u00c3\u00a1quinas de los usuarios. Primero plantearles el escenario en la que me encontraba, podemos decir [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[3,2],"tags":[],"class_list":["post-298","post","type-post","status-publish","format-standard","hentry","category-articulos","category-personales"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>TalSoft - Seguridad Inform\u00e1tica Empresarial - Experiencia con Skype<\/title>\n<meta name=\"description\" content=\"Talsoft transforma la visi\u00f3n de las empresas para que puedan proteger su informaci\u00f3n cr\u00edtica y confidencial frente ataques inform\u00e1ticos. 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