{"id":5407,"date":"2025-06-28T16:22:52","date_gmt":"2025-06-28T20:22:52","guid":{"rendered":"https:\/\/underhost.com\/blog\/?p=5407"},"modified":"2026-10-23T08:51:54","modified_gmt":"2026-10-23T12:51:54","slug":"how-to-use-cdn-content-delivery-networks-to-boost-website-speed-and-security","status":"publish","type":"post","link":"https:\/\/underhost.com\/blog\/how-to-use-cdn-content-delivery-networks-to-boost-website-speed-and-security\/","title":{"rendered":"How to Use a CDN to Speed Up and Protect Your Website"},"content":{"rendered":"<div class=\"uh-blog-hero\" style=\"margin:0 0 40px;text-align:center;padding:48px 24px;border-radius:20px;background:linear-gradient(135deg,#0D1F3C 0%,#125A8A 58%,#176EA5 100%);color:#ffffff;box-shadow:0 20px 40px -15px rgba(13,31,60,0.28);position:relative;overflow:hidden;\">\n<div style=\"display:inline-flex;align-items:center;gap:8px;padding:7px 14px;margin-bottom:16px;border:1px solid rgba(0,212,255,0.32);border-radius:999px;color:#DFF8FF;font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;background:rgba(0,212,255,0.10);\"><i class=\"fas fa-shield-alt\" style=\"color:#00D4FF;\"><\/i> Security<\/div>\n<h1 style=\"color:#ffffff;font-size:clamp(32px,5vw,46px);line-height:1.12;margin:0 0 14px;font-weight:800;\">How to Use a CDN to Speed Up and Protect Your Website<\/h1>\n<p style=\"font-size:18px;color:#EAF6FF;max-width:800px;margin:0 auto;line-height:1.7;\">Discover how UnderHost\u2019s powerful CDN solution\u2014UnderEDGE\u2014dramatically improves your website&#8217;s load times, global performance, and protection from DDoS attacks. Learn what a CDN is, how it works, and how you can enable it on your hosting account today.<\/p>\n<\/div>\n<div class=\"uh-blog-excerpt\" style=\"border-left:4px solid #00D4FF;padding:18px 20px;margin:0 0 34px;background:#F8FAFC;color:#1F2937;border-radius:0 14px 14px 0;box-shadow:0 8px 28px rgba(13,31,60,0.08);line-height:1.75;\"><strong style=\"color:#0D1F3C;\">Short answer:<\/strong> A CDN (content delivery network) stores copies of your site&#8217;s files on servers around the world and serves each visitor from a nearby location. It speeds up pages for distant visitors, takes load off your hosting, and adds a layer of protection. To use one, point your domain or a CDN hostname at the CDN, set caching rules that skip logged-in and checkout pages, and test before and after.<\/div>\n<nav aria-label=\"Table of contents\" class=\"uh-toc\" style=\"background:#ffffff;border:1px solid #E5E7EB;border-radius:16px;padding:20px 22px;margin:0 0 34px;box-shadow:0 4px 12px rgba(13,31,60,0.08);\">\n<div style=\"font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:#176EA5;margin-bottom:10px;\"><i class=\"fas fa-list\" style=\"color:#00D4FF;\"><\/i> In this guide<\/div>\n<ol style=\"margin:0;padding-left:20px;columns:2 260px;column-gap:28px;line-height:1.9;\">\n<li><a href=\"#how-a-cdn-works\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">How a CDN works<\/a><\/li>\n<li><a href=\"#what-a-cdn-helps-with\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">What a CDN helps with<\/a><\/li>\n<li><a href=\"#two-ways-to-set-up-a-cdn\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Two ways to set up a CDN<\/a><\/li>\n<li><a href=\"#step-by-step-setup\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Step-by-step setup<\/a><\/li>\n<li><a href=\"#caching-rules-that-work\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Caching rules that work<\/a><\/li>\n<li><a href=\"#security-features-to-turn-on\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Security features to turn on<\/a><\/li>\n<li><a href=\"#which-sites-benefit-most\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Which sites benefit most<\/a><\/li>\n<li><a href=\"#troubleshooting\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">Troubleshooting<\/a><\/li>\n<li><a href=\"#underedge-cdn\" style=\"color:#176EA5;text-decoration:none;font-weight:600;\">UnderEDGE CDN<\/a><\/li>\n<\/ol>\n<\/nav>\n<div class=\"uh-post-content\" style=\"color:#1F2937;font-size:16px;line-height:1.75;\">\n<h2 id=\"how-a-cdn-works\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-info-circle\" style=\"color:#00D4FF;\"><\/i> How a CDN works<\/h2>\n<p style=\"margin:0 0 18px;\">Without a CDN, every visitor downloads every file from your server, wherever they are. With a CDN, the first visitor in a region causes the CDN to fetch a file from your server (the origin) and keep it. Later visitors in that region get it from the nearby CDN location, which is faster and saves your server the work.<\/p>\n<h2 id=\"what-a-cdn-helps-with\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-info-circle\" style=\"color:#00D4FF;\"><\/i> What a CDN helps with<\/h2>\n<div style=\"overflow-x:auto;margin:26px 0;border:1px solid #E5E7EB;border-radius:14px;-webkit-overflow-scrolling:touch;\">\n<table style=\"width:100%;border-collapse:collapse;background:#ffffff;color:#1F2937;font-size:15px;line-height:1.55;margin:0;\">\n<thead>\n<tr style=\"background:#0D1F3C;color:#fff;\">\n<th style=\"padding:14px;text-align:left;\">Benefit<\/th>\n<th style=\"padding:14px;text-align:left;\">When it matters most<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Faster loading for distant visitors<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Your audience is spread across countries or continents<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Less load and bandwidth on your hosting<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Image-heavy sites, downloads, traffic spikes<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Protection<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Absorbing floods and filtering bad bots before they reach the server<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Free or included HTTPS at the edge<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Simplifies certificates for static hostnames<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin:0 0 18px;\">A CDN does not fix a slow server response for pages that cannot be cached, such as carts and dashboards. Page caching and a fast server still matter. See our <a href=\"https:\/\/underhost.com\/blog\/boosting-your-sites-load-speed-practical-tips-and-tools\/\">site speed guide<\/a>.<\/p>\n<h2 id=\"two-ways-to-set-up-a-cdn\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-terminal\" style=\"color:#00D4FF;\"><\/i> Two ways to set up a CDN<\/h2>\n<div style=\"overflow-x:auto;margin:26px 0;border:1px solid #E5E7EB;border-radius:14px;-webkit-overflow-scrolling:touch;\">\n<table style=\"width:100%;border-collapse:collapse;background:#ffffff;color:#1F2937;font-size:15px;line-height:1.55;margin:0;min-width:600px;\">\n<thead>\n<tr style=\"background:#0D1F3C;color:#fff;\">\n<th style=\"padding:14px;text-align:left;\">Method<\/th>\n<th style=\"padding:14px;text-align:left;\">How it works<\/th>\n<th style=\"padding:14px;text-align:left;\">Good for<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Full-site proxy<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Your domain&#8217;s DNS points to the CDN, which forwards requests to your server<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Speed and protection for the whole site<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Static hostname (pull zone)<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Images, CSS and JavaScript load from a CDN hostname such as cdn.example.com<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Offloading heavy files with minimal DNS changes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 id=\"step-by-step-setup\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-terminal\" style=\"color:#00D4FF;\"><\/i> Step-by-step setup<\/h2>\n<ol style=\"margin:0 0 24px;padding-left:22px;\">\n<li style=\"margin:0 0 8px;\">Measure the current speed of key pages with PageSpeed Insights, so you can compare later.<\/li>\n<li style=\"margin:0 0 8px;\">Choose the setup method and create the CDN zone, with your server as the origin.<\/li>\n<li style=\"margin:0 0 8px;\">Update DNS: either change nameservers or add the CNAME the CDN gives you.<\/li>\n<li style=\"margin:0 0 8px;\">For a static hostname, tell your CMS to use it, for example with a CDN plugin for WordPress.<\/li>\n<li style=\"margin:0 0 8px;\">Set caching rules (below), and turn on HTTPS for the CDN hostname.<\/li>\n<li style=\"margin:0 0 8px;\">Test pages logged in and logged out, and on a phone, then measure again.<\/li>\n<\/ol>\n<h2 id=\"caching-rules-that-work\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-angle-double-right\" style=\"color:#00D4FF;\"><\/i> Caching rules that work<\/h2>\n<ul style=\"margin:0 0 24px;padding-left:22px;\">\n<li style=\"margin:0 0 8px;\"><strong>Cache for a long time:<\/strong> images, fonts, CSS and JavaScript with versioned file names.<\/li>\n<li style=\"margin:0 0 8px;\"><strong>Cache briefly or not at all:<\/strong> HTML pages that change often.<\/li>\n<li style=\"margin:0 0 8px;\"><strong>Never cache:<\/strong> admin areas, login pages, carts, checkout and account pages, and any request with a login or cart cookie.<\/li>\n<li style=\"margin:0 0 8px;\"><strong>Purge after changes:<\/strong> clear the CDN cache when you update a design or replace files with the same name.<\/li>\n<\/ul>\n<h2 id=\"security-features-to-turn-on\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-shield-alt\" style=\"color:#00D4FF;\"><\/i> Security features to turn on<\/h2>\n<ul style=\"list-style:none;padding-left:0;\">\n<li style=\"margin:0 0 8px;\">\u2713 HTTPS between visitors and the CDN, and between the CDN and your server.<\/li>\n<li style=\"margin:0 0 8px;\">\u2713 Hotlink protection, so other sites cannot embed your images at your cost.<\/li>\n<li style=\"margin:0 0 8px;\">\u2713 Bot and rate-limit rules for login and search pages.<\/li>\n<li style=\"margin:0 0 8px;\">\u2713 Make sure the origin firewall allows the CDN&#8217;s IP ranges and still sees real visitor IPs.<\/li>\n<\/ul>\n<p style=\"margin:0 0 18px;\">For a common setup on cPanel, see our <a href=\"https:\/\/underhost.com\/blog\/the-best-way-to-use-cloudflare-with-cpanel-whm-for-better-performance\/\">Cloudflare and cPanel guide<\/a>.<\/p>\n<h2 id=\"which-sites-benefit-most\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-info-circle\" style=\"color:#00D4FF;\"><\/i> Which sites benefit most<\/h2>\n<div style=\"overflow-x:auto;margin:26px 0;border:1px solid #E5E7EB;border-radius:14px;-webkit-overflow-scrolling:touch;\">\n<table style=\"width:100%;border-collapse:collapse;background:#ffffff;color:#1F2937;font-size:15px;line-height:1.55;margin:0;\">\n<thead>\n<tr style=\"background:#0D1F3C;color:#fff;\">\n<th style=\"padding:14px;text-align:left;\">Site<\/th>\n<th style=\"padding:14px;text-align:left;\">Why<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Online stores<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Product images load faster; protection for checkout and login pages<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Media and portfolio sites<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Large images and downloads served close to visitors<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Sites with an international audience<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Distance is the main cause of slow loading for far-away visitors<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Small local sites<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Less benefit if visitors are near the server, but protection can still help<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 id=\"troubleshooting\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-exclamation-triangle\" style=\"color:#00D4FF;\"><\/i> Troubleshooting<\/h2>\n<div style=\"overflow-x:auto;margin:26px 0;border:1px solid #E5E7EB;border-radius:14px;-webkit-overflow-scrolling:touch;\">\n<table style=\"width:100%;border-collapse:collapse;background:#ffffff;color:#1F2937;font-size:15px;line-height:1.55;margin:0;min-width:600px;\">\n<thead>\n<tr style=\"background:#0D1F3C;color:#fff;\">\n<th style=\"padding:14px;text-align:left;\">Problem<\/th>\n<th style=\"padding:14px;text-align:left;\">Likely cause<\/th>\n<th style=\"padding:14px;text-align:left;\">Fix<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Old files still showing<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">The CDN cache has the old version<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Purge the file or the whole cache.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Logged-in users see others&#8217; content<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Personal pages were cached<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Exclude account, cart and admin pages, then purge.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Mixed content warnings<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Some files still load over HTTP<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Use HTTPS URLs everywhere, and enable HTTPS on the CDN hostname.<\/td>\n<\/tr>\n<tr>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Visitors blocked by the server<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">The firewall blocks CDN IP addresses<\/td>\n<td style=\"padding:14px;border-top:1px solid #E5E7EB;vertical-align:top;\">Allow the CDN&#8217;s ranges and restore real visitor IPs.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h2 id=\"underedge-cdn\" style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:34px 0 14px;scroll-margin-top:90px;\"><i class=\"fas fa-angle-double-right\" style=\"color:#00D4FF;\"><\/i> UnderEDGE CDN<\/h2>\n<p style=\"margin:0 0 18px;\">UnderHost offers its own CDN, UnderEDGE, which works with shared hosting, VPS and dedicated servers. See the product page in @CustomerPanel for current locations, limits and prices, or ask our team which setup suits your site.<\/p>\n<div aria-hidden=\"true\" class=\"uh-section-divider\" style=\"width:min(100% - 32px, 1080px);margin:44px auto;display:grid;grid-template-columns:1fr 32px 1fr;align-items:center;gap:18px;pointer-events:none;\"><span style=\"height:1px;background:linear-gradient(90deg,transparent,rgba(0,212,255,0.40),rgba(23,110,165,0.24),transparent);\"><\/span><img alt=\"\" decoding=\"async\" height=\"32\" loading=\"lazy\" src=\"https:\/\/cdn.underhost.com\/android-chrome-192x192.webp\" style=\"width:32px;height:32px;display:block;border-radius:8px;filter:drop-shadow(0 0 14px rgba(0,212,255,0.30));\" width=\"32\"\/><span style=\"height:1px;background:linear-gradient(90deg,transparent,rgba(23,110,165,0.24),rgba(0,212,255,0.40),transparent);\"><\/span><\/div>\n<\/div>\n<div class=\"uh-blog-cta\" style=\"background:linear-gradient(135deg,#0D1F3C 0%,#125A8A 58%,#176EA5 100%);color:#ffffff;padding:36px 24px;border-radius:20px;text-align:center;margin:44px 0;box-shadow:0 20px 40px -15px rgba(13,31,60,0.32);\">\n<h2 style=\"margin:0 0 12px;font-size:28px;line-height:1.25;color:#ffffff;\">Need help with this?<\/h2>\n<p style=\"font-size:17px;margin:0 auto 22px;color:#EAF6FF;max-width:720px;line-height:1.7;\">Want faster pages worldwide? Ask our team about UnderEDGE CDN for your site.<\/p>\n<p><a href=\"https:\/\/customerpanel.ca\/client\/\" style=\"background:linear-gradient(90deg,#00D4FF,#0077FF);color:#ffffff;padding:13px 28px;border-radius:10px;text-decoration:none;font-weight:800;display:inline-block;margin:8px;\">Contact @CustomerPanel<\/a><\/div>\n<div class=\"uh-faq-section\" id=\"faq\" style=\"margin:34px 0;scroll-margin-top:90px;\">\n<h2 style=\"color:#0D1F3C;font-size:28px;line-height:1.25;margin:0 0 18px;border-bottom:2px solid rgba(0,212,255,0.22);padding-bottom:10px;\">Frequently asked questions<\/h2>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">Does a CDN work with shared hosting?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">Yes. A CDN sits in front of any hosting type, including shared hosting.<\/p>\n<\/div>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">Will a CDN improve my SEO?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">Indirectly. Faster pages improve Core Web Vitals and the visitor experience, which search engines take into account.<\/p>\n<\/div>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">Which pages should a CDN not cache?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">Admin, login, cart, checkout and account pages, and any request from a logged-in user.<\/p>\n<\/div>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">Do I need to change nameservers to use a CDN?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">Only for a full-site proxy. A static hostname needs just a CNAME record.<\/p>\n<\/div>\n<div style=\"margin-top:18px;background:#F8FAFC;padding:18px 20px;border-radius:14px;border:1px solid rgba(23,110,165,0.14);\">\n<h3 style=\"color:#0D1F3C;margin:0 0 8px;font-size:19px;\">How do I clear the CDN cache?<\/h3>\n<p style=\"margin:0;color:#1F2937;line-height:1.7;\">Use the purge option in the CDN dashboard, for one file or the whole site.<\/p>\n<\/div>\n<\/div>\n<p><!-- uh-related-start --><\/p>\n<div style=\"background:#F4F8FC;border:1px solid #DCE7F3;border-radius:14px;padding:18px 22px;margin:32px 0 8px;\">\n<h2 style=\"margin:0 0 12px;font-size:22px;\">Related guides<\/h2>\n<ul style=\"margin:0;padding-left:20px;\">\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/how-to-use-redis-manager-in-cpanel-to-boost-website-speed\/\">How to Use Redis Manager in cPanel to Boost Website Speed<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/clean-malware-and-restore-your-hacked-website-with-hourly-server-management\/\">Clean Malware and Restore Your Hacked Website with Hourly Server Management<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/nodejs-security-update-october-2026-cve-2026-111497\/\">Node.js Security Update (October 2026): CVE-2026-111497<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/php-security-release-october-2026-patch-guide\/\">PHP Critical Security Update (October 2026): Patch Guide, CloudLinux Status, CERT-EU Advice and Mitigations<\/a><\/li>\n<li style=\"margin:0 0 8px;\"><a href=\"https:\/\/underhost.com\/blog\/imunify360-vs-cpguard-which-security-suite-fits-your-hosting-needs\/\">Imunify360 vs cPGuard: Which Security Suite Fits Your Hosting Needs?<\/a><\/li>\n<\/ul>\n<\/div>\n<p><!-- uh-related-end --><br \/>\n<script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does a CDN work with shared hosting?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. A CDN sits in front of any hosting type, including shared hosting.\"}}, {\"@type\": \"Question\", \"name\": \"Will a CDN improve my SEO?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Indirectly. Faster pages improve Core Web Vitals and the visitor experience, which search engines take into account.\"}}, {\"@type\": \"Question\", \"name\": \"Which pages should a CDN not cache?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Admin, login, cart, checkout and account pages, and any request from a logged-in user.\"}}, {\"@type\": \"Question\", \"name\": \"Do I need to change nameservers to use a CDN?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Only for a full-site proxy. A static hostname needs just a CNAME record.\"}}, {\"@type\": \"Question\", \"name\": \"How do I clear the CDN cache?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Use the purge option in the CDN dashboard, for one file or the whole site.\"}}]}<\/script><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Discover how UnderHost\u2019s powerful CDN solution\u2014UnderEDGE\u2014dramatically improves your website&#8217;s load times, global performance, and protection from DDoS attacks. Learn what a CDN is, how it works, and how you can enable it on your hosting account today.<\/p>\n","protected":false},"author":1,"featured_media":4745,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[203],"tags":[108,122],"class_list":["post-5407","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-security","tag-tag-cpanel","tag-tag-dns"],"_links":{"self":[{"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/posts\/5407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/comments?post=5407"}],"version-history":[{"count":9,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/posts\/5407\/revisions"}],"predecessor-version":[{"id":6905,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/posts\/5407\/revisions\/6905"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/media\/4745"}],"wp:attachment":[{"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/media?parent=5407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/categories?post=5407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/underhost.com\/blog\/wp-json\/wp\/v2\/tags?post=5407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}