{"version":"1.0","provider_name":"OnlineExamMaker Blog","provider_url":"https:\/\/onlineexammaker.com\/kb","author_name":"Willson Black","author_url":"https:\/\/onlineexammaker.com\/kb\/author\/willblog\/","title":"2026 | 15 c\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi cho b\u00e0i ki\u1ec3m tra t\u01b0\u1eddng l\u1eeda - OnlineExamMaker Blog","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"PS92eBblsS\"><a href=\"https:\/\/onlineexammaker.com\/kb\/vi\/15-firewall-quiz-questions-and-answers-12\/\">2026 | 15 c\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi cho b\u00e0i ki\u1ec3m tra t\u01b0\u1eddng l\u1eeda<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/onlineexammaker.com\/kb\/vi\/15-firewall-quiz-questions-and-answers-12\/embed\/#?secret=PS92eBblsS\" width=\"600\" height=\"338\" title=\"&#8220;2026 | 15 c\u00e2u h\u1ecfi v\u00e0 c\u00e2u tr\u1ea3 l\u1eddi cho b\u00e0i ki\u1ec3m tra t\u01b0\u1eddng l\u1eeda&#8221; &#8212; OnlineExamMaker Blog\" data-secret=\"PS92eBblsS\" 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","thumbnail_url":"https:\/\/onlineexammaker.com\/kb\/wp-content\/uploads\/2023\/08\/firewall.webp","thumbnail_width":780,"thumbnail_height":450,"description":"1. T\u01b0\u1eddng l\u1eeda l\u00e0 g\u00ec? T\u01b0\u1eddng l\u1eeda (Firewall) l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng an ninh m\u1ea1ng thi\u1ebft y\u1ebfu, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 gi\u00e1m s\u00e1t v\u00e0 ki\u1ec3m so\u00e1t l\u01b0u l\u01b0\u1ee3ng m\u1ea1ng ra v\u00e0o d\u1ef1a tr\u00ean c\u00e1c quy t\u1eafc an ninh \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh tr\u01b0\u1edbc. M\u1ee5c ti\u00eau ch\u00ednh c\u1ee7a t\u01b0\u1eddng l\u1eeda l\u00e0 b\u1ea3o v\u1ec7 c\u00e1c h\u1ec7 th\u1ed1ng [&hellip;]"}