{"id":53188,"date":"2019-11-26T00:00:00","date_gmt":"2019-11-25T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns"},"modified":"2020-02-18T14:01:04","modified_gmt":"2020-02-18T11:01:04","slug":"v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns","status":"publish","type":"post","link":"https:\/\/prohoster.info\/es\/blog\/news\/v-ublock-origin-dobavlena-zashhita-ot-novogo-metoda-otslezhivaniya-manipuliruyushhego-imenami-v-dns","title":{"rendered":"uBlock Origin ha a\u00f1adido protecci\u00f3n contra un nuevo m\u00e9todo de seguimiento que manipula nombres en DNS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Usuarios de uBlock Origin se not\u00f3<\/a><\/noindex> la implementaci\u00f3n por parte de redes publicitarias y sistemas de an\u00e1lisis web de nuevas t\u00e9cnicas para rastrear movimientos y sustituir bloques publicitarios, que no se bloquean en uBlock Origin y otras extensiones para filtrar contenido no deseado. <\/p>\n

La esencia del m\u00e9todo es que los propietarios de sitios web que desean insertar c\u00f3digo para el seguimiento o la exhibici\u00f3n de anuncios crean un subdominio separado en DNS que apunta al servidor de una red publicitaria o de an\u00e1lisis web (por ejemplo, se crea un registro CNAME f7ds.liberation.fr que apunta al servidor de seguimiento liberation.eulerian.net). De este modo, el c\u00f3digo publicitario se carga formalmente desde el mismo dominio ra\u00edz que el sitio, y por lo tanto no se sujeta a bloqueo. El nombre del subdominio se elige en forma de un identificador aleatorio, lo que dificulta el bloqueo por patrones, ya que el subdominio vinculado a la red publicitaria es dif\u00edcil de distinguir de los subdominios utilizados para cargar otros recursos locales de la p\u00e1gina. <\/p>\n

Desarrollador de uBlock Origin propuso<\/a><\/noindex> utilizar resoluci\u00f3n<\/a><\/noindex> de nombre en DNS para determinar el host relacionado a trav\u00e9s de CNAME. El m\u00e9todo el modo \u00abBACKUP LOCK\u00bb, que se puede utilizar durante la copia de seguridad de archivos de la base de datos;<\/a><\/noindex> comienza con
\nuna versi\u00f3n experimental uBlock Origin 1.24.1b3<\/a><\/noindex> para Firefox<\/a><\/noindex>. Para activar la verificaci\u00f3n en la configuraci\u00f3n avanzada, debe establecer el valor cnameAliasList en \u00ab*\u00bb, en este caso, todas las verificaciones de listas negras se duplicar\u00e1n tambi\u00e9n para los nombres definidos a trav\u00e9s de CNAME. Al instalar la actualizaci\u00f3n, se requerir\u00e1 otorgar permisos para obtener informaci\u00f3n de DNS.<\/p>\n

\"uBlock<\/a><\/noindex><\/center><\/p>\n

Para Chrome, la verificaci\u00f3n de CNAME no puede ser a\u00f1adida, ya que la API dns.resolve()<\/a><\/noindex> solo est\u00e1 disponible para extensiones en Firefox y no es compatible con Chrome. Desde el punto de vista del rendimiento, la determinaci\u00f3n de CNAME no deber\u00eda generar costos adicionales, aparte del uso de recursos del procesador para aplicar nuevamente las reglas para otro nombre, ya que al acceder al recurso, el navegador ya ha realizado la resoluci\u00f3n y el valor debe estar en cach\u00e9. Este m\u00e9todo de protecci\u00f3n puede ser eludido mediante la vinculaci\u00f3n directa de un nombre a una IP sin el uso de CNAME, pero este enfoque complica el mantenimiento (en caso de que cambie la direcci\u00f3n IP de la red publicitaria, se deber\u00e1n actualizar los datos en todos los servidores DNS de los editores) y puede ser eludido mediante la creaci\u00f3n de una lista negra de direcciones IP de rastreadores.<\/p>\n

<\/a><\/noindex><\/p>\n

Fuente: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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