{"version":"1.0","provider_name":"LACNIC CSIRT","provider_url":"https:\/\/csirt.lacnic.net\/en","title":"LACNIC CSIRT - Identificando servidores DNS IPv6 Open Resolvers","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"blENlHJV7d\"><a href=\"https:\/\/csirt.lacnic.net\/en\/articulos-tecnicos-en\/identificando-servidores-dns-ipv6-open-resolvers\">Identificando servidores DNS IPv6 Open Resolvers<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/csirt.lacnic.net\/en\/articulos-tecnicos-en\/identificando-servidores-dns-ipv6-open-resolvers\/embed#?secret=blENlHJV7d\" width=\"600\" height=\"338\" title=\"&#8220;Identificando servidores DNS IPv6 Open Resolvers&#8221; &#8212; LACNIC CSIRT\" data-secret=\"blENlHJV7d\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/* <![CDATA[ *\/\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/* ]]> *\/\n<\/script>\n","description":"Introducci\u00f3n Como muchos de ustedes saben, tener servidores DNS Open Resolvers es muy negativo, tanto para el que deja el servicio abierto como para la seguridad en Internet en general. Este tipo de servidores se utilizan como vector de ataques de DDoS por amplificaci\u00f3n ya que a partir de un mensaje de consulta de peque\u00f1o [&hellip;]","thumbnail_url":"https:\/\/csirt.lacnic.net\/wp-content\/uploads\/open-resolvers-diagrama-bloques-1024x558.png"}