{"id":12809,"date":"2025-12-13T12:46:07","date_gmt":"2025-12-13T07:16:07","guid":{"rendered":"https:\/\/www.youstable.com\/blog\/?p=12809"},"modified":"2025-12-24T16:14:33","modified_gmt":"2025-12-24T10:44:33","slug":"configure-litespeed-on-linux","status":"publish","type":"post","link":"https:\/\/www.youstable.com\/blog\/configure-litespeed-on-linux","title":{"rendered":"How to Configure LiteSpeed on Linux Server &#8211; (Guide 2026)"},"content":{"rendered":"\n<p>To configure LiteSpeed on a Linux server, install OpenLiteSpeed or LiteSpeed Enterprise, add PHP (LSAPI), secure the WebAdmin, create a virtual host and listener for your domain, enable HTTPS with Let\u2019s Encrypt, switch on HTTP\/3 and Brotli, tune LSCache and PHP, open required firewall ports, and harden security.<\/p>\n\n\n\n<p>This step-by-step guide explains how to configure LiteSpeed on Linux server in 2026 using practical, production-tested steps. You\u2019ll learn editions, installation, SSL, HTTP\/3, LSCache, performance tuning, security, and troubleshooting\u2014using clear commands for Ubuntu\/Debian and RHEL-based distros. Whether you host WordPress or custom apps, this is your actionable blueprint.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"what-is-litespeed-openlitespeed-vs-litespeed-enterprise\"><strong>What Is LiteSpeed? (OpenLiteSpeed vs LiteSpeed Enterprise)<\/strong><\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2546\" height=\"1314\" src=\"https:\/\/www.youstable.com\/blog\/wp-content\/uploads\/2025\/12\/What-Is-LiteSpeed.png\" alt=\"What Is LiteSpeed\" class=\"wp-image-12939\" srcset=\"https:\/\/www.youstable.com\/blog\/wp-content\/uploads\/2025\/12\/What-Is-LiteSpeed.png 2546w, https:\/\/www.youstable.com\/blog\/wp-content\/uploads\/2025\/12\/What-Is-LiteSpeed-150x77.png 150w\" sizes=\"auto, (max-width: 2546px) 100vw, 2546px\" \/><\/figure>\n\n\n\n<p>LiteSpeed is a drop-in, event-driven web server designed for high concurrency, low latency, and strong compatibility with Apache syntax. It supports HTTP\/2, HTTP\/3\/QUIC, TLS 1.3, LSCache, and PHP LSAPI for exceptional PHP performance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"choose-the-right-edition\"><strong>Choose the right edition<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>OpenLiteSpeed (free):<\/strong> Excellent performance, HTTP\/3, LSCache (plugin-driven). Suitable for standalone servers. Uses a WebAdmin GUI, supports most .htaccess rules.<\/li>\n\n\n\n<li><strong>LiteSpeed Enterprise (paid):<\/strong> Near 100% Apache compatibility, drop-in for cPanel\/DirectAdmin\/Plesk, advanced features, ESI, and premium support. Ideal for hosting control panels and high-traffic multi-tenant hosting.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"prerequisites-and-system-checklist\"><strong>Prerequisites and System Checklist<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><a href=\"https:\/\/www.youstable.com\/blog\/best-linux-distros-for-hosting\/\">Linux distro<\/a>: <\/strong>Ubuntu 22.04\/24.04, Debian 12, Rocky\/AlmaLinux 8\/9, or RHEL 8\/9.<\/li>\n\n\n\n<li>Root or sudo SSH access; a clean server is ideal.<\/li>\n\n\n\n<li>DNS A\/AAAA records pointing your domain to the server.<\/li>\n\n\n\n<li><strong>Open ports:<\/strong> 80\/TCP, 443\/TCP, 443\/UDP (for HTTP\/3), 7080\/TCP (WebAdmin, temporary).<\/li>\n\n\n\n<li><strong>Server sizing:<\/strong> 1\u20132 vCPU and 2\u20134 GB RAM for <a href=\"https:\/\/www.youstable.com\/blog\/how-to-choose-the-best-wordpress-hostings\/\">small WordPress<\/a>; scale up for WooCommerce or multisite.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-by-step-configure-litespeed-on-linux-server-2026\"><strong>Step-by-Step: Configure LiteSpeed on Linux Server (2026)<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-1-install-litespeed-ubuntu-debian-rhel\"><strong>Step 1 \u2014 Install LiteSpeed (Ubuntu\/Debian\/RHEL)<\/strong><\/h3>\n\n\n\n<p>Use the official LiteSpeed repository for the latest stable builds.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># Debian\/Ubuntu\nsudo apt update\nsudo apt install -y curl wget ca-certificates\nwget -O - https:\/\/repo.litespeed.sh | sudo bash\n# Install OpenLiteSpeed\nsudo apt install -y openlitespeed\n# OR install LiteSpeed Enterprise (requires a license)\n# sudo apt install -y lsws\n\n# RHEL\/CentOS\/Rocky\/Alma\nsudo yum install -y curl wget ca-certificates\nwget -O - https:\/\/repo.litespeed.sh | sudo bash\nsudo yum install -y openlitespeed\n# OR Enterprise\n# sudo yum install -y lsws\n\n# Set the WebAdmin password (both OLS and Enterprise use lsws admin)\nsudo \/usr\/local\/lsws\/admin\/misc\/admpass.sh\n\n# Start and enable service\nsudo systemctl enable --now lsws\nsudo systemctl status lsws<\/code><\/pre>\n\n\n\n<p>WebAdmin runs at https:\/\/SERVER_IP:7080 by default. You\u2019ll use it to configure listeners, virtual hosts, <a href=\"https:\/\/www.youstable.com\/blog\/install-and-renew-ssl-certificates\/\">SSL<\/a>, and performance settings.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-2-install-php-lsapi-and-common-extensions\"><strong>Step 2 \u2014 Install PHP (LSAPI) and common extensions<\/strong><\/h3>\n\n\n\n<p>LiteSpeed\u2019s PHP via LSAPI (lsphp) delivers faster, more stable PHP under load than PHP-FPM.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># Install PHP 8.2 (recommended in 2026) with common modules\n# Debian\/Ubuntu\nsudo apt install -y lsphp82 lsphp82-common lsphp82-mysql lsphp82-curl lsphp82-zip lsphp82-xml lsphp82-mbstring lsphp82-gd lsphp82-opcache\n\n# RHEL family\nsudo yum install -y lsphp82 lsphp82-common lsphp82-mysql lsphp82-curl lsphp82-zip lsphp82-xml lsphp82-mbstring lsphp82-gd lsphp82-opcache\n\n# PHP binary path (OLS\/Enterprise default):\n# \/usr\/local\/lsws\/lsphp82\/bin\/lsphp<\/code><\/pre>\n\n\n\n<p>In WebAdmin: Server Configuration \u2192 External App \u2192 Add \u201c<a href=\"https:\/\/www.youstable.com\/blog\/understand-litespeed-on-linux\/\">LiteSpeed<\/a> SAPI App\u201d. Set:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Name: lsphp82<\/li>\n\n\n\n<li>Address: uds:\/\/tmp\/lshttpd\/lsphp.sock<\/li>\n\n\n\n<li>Max Connections: 35\u2013100 (size to CPU\/RAM)<\/li>\n\n\n\n<li>Command: \/usr\/local\/lsws\/lsphp82\/bin\/lsphp<\/li>\n\n\n\n<li>Environment: PHP_LSAPI_CHILDREN=50, LSAPI_AVOID_FORK=1 (tune as needed)<\/li>\n<\/ul>\n\n\n\n<p>Map the script handler: Server Configuration \u2192 Script Handler \u2192 Add \u201csuffix: php\u201d with Handler Type \u201cLiteSpeed SAPI\u201d and choose lsphp82.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-3-open-firewall-ports-and-selinux\"><strong>Step 3 \u2014 Open firewall ports (and SELinux)<\/strong><\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code># UFW (Ubuntu\/Debian)\nsudo ufw allow 80\/tcp\nsudo ufw allow 443\/tcp\nsudo ufw allow 443\/udp   # HTTP\/3\/QUIC\nsudo ufw allow 7080\/tcp  # WebAdmin (temporary)\nsudo ufw reload\n\n# firewalld (RHEL family)\nsudo firewall-cmd --permanent --add-service=http\nsudo firewall-cmd --permanent --add-service=https\nsudo firewall-cmd --permanent --add-port=443\/udp\nsudo firewall-cmd --permanent --add-port=7080\/tcp\nsudo firewall-cmd --reload\n\n# SELinux: allow web to bind HTTP\/HTTPS (if enforcing)\nsudo setsebool -P httpd_can_network_connect 1<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-4-secure-and-access-webadmin\"><strong>Step 4 \u2014 Secure and access WebAdmin<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Login: https:\/\/SERVER_IP:7080 using the admin credentials you set.<\/li>\n\n\n\n<li>Change the admin listener to bind 127.0.0.1 and access via SSH tunnel for production:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code># Local machine example:\nssh -L 7080:127.0.0.1:7080 user@server-ip<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Disable external access or restrict by IP (WebAdmin \u2192 WebAdmin Settings).<\/li>\n\n\n\n<li>Set strong password policies and rotate periodically.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-5-create-your-site-virtual-host-and-listener\"><strong>Step 5 \u2014 Create your site (Virtual Host) and Listener<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Create directories:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>sudo mkdir -p \/var\/www\/example.com\/{public_html,logs}\nsudo chown -R nobody:nogroup \/var\/www\/example.com\n# On RHEL-based, use nobody:nobody if nogroup is absent<\/code><\/pre>\n\n\n\n<p>In WebAdmin:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Virtual Hosts \u2192 Add: Set Doc Root \u201c\/var\/www\/example.com\/public_html\u201d and Log paths.<\/li>\n\n\n\n<li>Virtual Hosts \u2192 Basic \u2192 Enable Rewrite: Yes. Auto Index: No.<\/li>\n\n\n\n<li>Listeners \u2192 Create a listener on 80 \u2192 Map the domain (example.com, www.example.com) to your virtual host.<\/li>\n\n\n\n<li>Add index files: index.php, index.html.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-6-enable-https-with-lets-encrypt\"><strong>Step 6 \u2014 Enable HTTPS with Let\u2019s Encrypt<\/strong><\/h3>\n\n\n\n<p>You can use acme.sh or Certbot. With OpenLiteSpeed, acme.sh integrates smoothly.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># Install acme.sh (as root)\ncurl https:\/\/get.acme.sh | sh -s email=admin@example.com\nsource ~\/.bashrc\n\n# Issue a certificate using webroot\nacme.sh --issue -d example.com -d www.example.com -w \/var\/www\/example.com\/public_html\n\n# Install cert to LiteSpeed paths\nacme.sh --install-cert -d example.com \\\n--key-file       \/usr\/local\/lsws\/conf\/example.com.key \\\n--fullchain-file \/usr\/local\/lsws\/conf\/example.com.crt \\\n--reloadcmd     \"systemctl reload lsws\"<\/code><\/pre>\n\n\n\n<p>In WebAdmin: Listeners \u2192 443 \u2192 SSL tab \u2192 set the certificate\/key paths above. OCSP Stapling: Enable, and provide the certificate chain if prompted.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-7-turn-on-http-3-tls-1-3-brotli\"><strong>Step 7 \u2014 Turn on HTTP\/3, TLS 1.3, Brotli<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>HTTP\/3\/QUIC: Enable in SSL Listener \u2192 QUIC: On. Ensure UDP\/443 is open.<\/li>\n\n\n\n<li>TLS 1.3: Enable and prefer modern ciphers (TLS_AES_128_GCM_SHA256, TLS_CHACHA20_POLY1305_SHA256).<\/li>\n\n\n\n<li>Compression: Enable Brotli first, keep Gzip as fallback.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-8-install-and-configure-lscache-wordpress\"><strong>Step 8 \u2014 Install and configure LSCache (WordPress)<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Install the free \u201cLiteSpeed Cache\u201d plugin in WordPress.<\/li>\n\n\n\n<li>WebAdmin \u2192 Server Configuration \u2192 Cache: Enable Cache: Yes.<\/li>\n\n\n\n<li>Plugin \u2192 Enable QUIC.cloud CDN if needed, and turn on page\/object cache, <a href=\"https:\/\/www.youstable.com\/blog\/fix-leverage-browser-caching\/\">browser cache<\/a>, and image\/WebP optimizations.<\/li>\n\n\n\n<li>For WooCommerce: Enable ESI for cart\/checkout fragments to avoid caching dynamic data.<\/li>\n<\/ul>\n\n\n\n<p>LSCache is a major reason LiteSpeed outperforms Nginx\/Apache for WordPress. It integrates server-level caching, smart purges, and HTTP\/3 support end to end.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-9-php-tuning-and-opcache\"><strong>Step 9 \u2014 PHP tuning and Opcache<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>php.ini path: \/usr\/local\/lsws\/lsphp82\/etc\/php.ini<\/li>\n\n\n\n<li>Key directives (adjust to RAM\/traffic):<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>memory_limit = 512M\nupload_max_filesize = 128M\npost_max_size = 128M\nmax_execution_time = 120\n\n; Opcache\nopcache.enable=1\nopcache.enable_cli=1\nopcache.memory_consumption=256\nopcache.max_accelerated_files=20000\nopcache.validate_timestamps=0\nopcache.save_comments=1<\/code><\/pre>\n\n\n\n<p>In lsphp external app, tune PHP_LSAPI_CHILDREN (start ~50) and Max Connections to match CPU. Monitor with top\/htop and adjust to prevent memory pressure.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-10-log-rotation-and-observability\"><strong>Step 10 \u2014 Log rotation and observability<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Logs: \/usr\/local\/lsws\/logs\/error.log, \/var\/www\/example.com\/logs\/access.log.<\/li>\n\n\n\n<li>Enable daily rotation (WebAdmin \u2192 Server Log\/Virtual Host Log \u2192 Rotate).<\/li>\n\n\n\n<li>Systemd journal: systemctl status lsws; live tail via journalctl -fu lsws.<\/li>\n\n\n\n<li>Performance: enable Real-Time Stats in WebAdmin for 5xx spikes, slow requests, and cache effectiveness.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-11-security-hardening\"><strong>Step 11 \u2014 Security hardening<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>WebAdmin binding: Restrict to 127.0.0.1 and tunnel via SSH.<\/li>\n\n\n\n<li>Permissions: chown webroot to a non-privileged user; avoid 777. Typical: 755 dirs, 644 files.<\/li>\n\n\n\n<li>Headers: Add Security Headers (Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy) in vHost context.<\/li>\n\n\n\n<li>Disable server signature: Server \u2192 Tuning \u2192 Server Signature: Hide.<\/li>\n\n\n\n<li>ModSecurity: Enable and load OWASP CRS for WAF-style protection.<\/li>\n\n\n\n<li>Fail2ban: Ban repeated 401\/403 or wp-login attempts using access\/error log filters.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"step-12-migrate-from-apache-or-nginx\"><strong>Step 12 \u2014 Migrate from Apache or Nginx<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Apache:<\/strong> <a href=\"https:\/\/www.youstable.com\/blog\/fix-litespeed-on-linux\/\">LiteSpeed Enterprise<\/a> is drop-in for cPanel\/DirectAdmin; .htaccess and mod_rewrite are highly compatible.<\/li>\n\n\n\n<li>OpenLiteSpeed: Supports most .htaccess rules. Ensure \u201cEnable Rewrite\u201d is on. For complex rewrites, migrate into the vHost \u201cRewrite Rules\u201d area.<\/li>\n\n\n\n<li>Nginx: Convert server blocks to LiteSpeed listeners and vHosts; replicate proxy\/pass rules via Contexts.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"troubleshooting-quick-fixes\"><strong>Troubleshooting: Quick Fixes<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Port already in use:<\/strong> Another service is on 80\/443. Free it or change LiteSpeed listener ports: sudo ss -ltnp | grep :80<\/li>\n\n\n\n<li><strong>HTTP\/3 not detected:<\/strong> Open UDP\/443, enable QUIC, and confirm via tools like curl &#8211;http3 or online HTTP\/3 tests.<\/li>\n\n\n\n<li><strong>WordPress permalinks 404: <\/strong>Enable Rewrite, ensure .htaccess present, or paste rules into vHost \u201cRewrite Rules\u201d.<\/li>\n\n\n\n<li><strong>SSL errors: <\/strong>Verify fullchain and key paths, correct file permissions (600 for key), and reload lsws.<\/li>\n\n\n\n<li><strong>High CPU during bursts:<\/strong> Increase LSCache hit ratio, add PHP_LSAPI_CHILDREN cautiously, and raise opcache.memory_consumption.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"best-practices-and-tuning-tips-2026\"><strong>Best Practices and Tuning Tips (2026)<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Prefer PHP 8.2\/8.3 for performance and security.<\/li>\n\n\n\n<li>Use HTTP\/3 with TLS 1.3 and Brotli for optimal Core Web Vitals.<\/li>\n\n\n\n<li>CDN: Pair with QUIC.cloud or another CDN for global latency reduction.<\/li>\n\n\n\n<li>Object Cache: Redis with LSCache for WooCommerce or membership sites.<\/li>\n\n\n\n<li>Autoscaling: For spikes, front with a <a href=\"https:\/\/www.youstable.com\/blog\/install-load-balancer-on-linux\/\">load balancer<\/a> and multiple LiteSpeed nodes.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"why-choose-a-managed-option\"><strong>Why Choose a Managed Option<\/strong><\/h2>\n\n\n\n<p>If you prefer not to manage repositories, SSL renewals, caching rules, and tuning, YouStable offers LiteSpeed-optimized <a href=\"https:\/\/www.youstable.com\/blog\/install-mongodb-on-linux\/\">Linux servers<\/a> with preconfigured LSCache, HTTP\/3, and 24\u00d77 support. We handle performance and security hardening so you can focus on your applications.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"conclusion\"><strong>Conclusion<\/strong><\/h2>\n\n\n\n<p>Configuring <a href=\"https:\/\/www.youstable.com\/blog\/understand-litespeed-on-linux\/\">LiteSpeed on Linux server<\/a> is straightforward and yields immediate gains: faster PHP, built-in HTTP\/3, and powerful LSCache. Follow the steps above\u2014install, secure, SSL, enable HTTP\/3, tune PHP and cache, and harden the stack\u2014to deliver a high-performance, secure platform ready for WordPress, WooCommerce, or custom apps.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"faqs-configure-litespeed-on-linux-server\"><strong>FAQs: Configure LiteSpeed on Linux Server<\/strong><\/h2>\n\n\n\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h3 id=\"is-litespeed-faster-than-nginx-or-apache-for-wordpress\">Is LiteSpeed faster than Nginx or Apache for WordPress?<\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>Yes. With LSCache and PHP LSAPI, LiteSpeed typically delivers lower TTFB and higher requests per second than Nginx (PHP-FPM) or Apache, especially under concurrency. The server-level cache and HTTP\/3\/QUIC support significantly improve Core Web Vitals for dynamic sites.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h3 id=\"how-do-i-enable-http-3-in-litespeed\">How do I enable HTTP\/3 in LiteSpeed?<\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>Open UDP\/443 in your firewall, then in WebAdmin go to your SSL listener and set QUIC to \u201cEnable.\u201d Ensure TLS 1.3 is active. Verify using curl &#8211;http3 or an online HTTP\/3 validator.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h3 id=\"whats-the-difference-between-openlitespeed-and-litespeed-enterprise\">What\u2019s the difference between OpenLiteSpeed and LiteSpeed Enterprise?<\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>OpenLiteSpeed is free and ideal for single servers; LiteSpeed Enterprise is commercial with near-complete Apache compatibility and tight integration with control panels (cPanel\/DirectAdmin\/Plesk). Enterprise is recommended for shared hosting and multi-tenant environments.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h3 id=\"which-ports-must-be-open-for-litespeed\">Which ports must be open for LiteSpeed?<\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>Open 80\/TCP and 443\/TCP for HTTP\/HTTPS. For HTTP\/3, also open 443\/UDP. WebAdmin uses 7080\/TCP (restrict or tunnel in production).<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section\t\thelp class=\"sc_fs_faq sc_card    \"\n\t\t\t\t>\n\t\t\t\t<h3 id=\"how-do-i-switch-php-versions-lsphp-later\">How do I switch PHP versions (lsphp) later?<\/h3>\t\t\t\t<div>\n\t\t\t\t\t\t<div class=\"sc_fs_faq__content\">\n\t\t\t\t\n\n<p>Install the new version (e.g., lsphp83 and modules), then in WebAdmin change your external app Command to \/usr\/local\/lsws\/lsphp83\/bin\/lsphp, update handlers as needed, and reload lsws. Test in a staging site before switching production.<\/p>\n\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t<\/section>\n\t\t\n<script type=\"application\/ld+json\">\n\t{\n\t\t\"@context\": \"https:\/\/schema.org\",\n\t\t\"@type\": \"FAQPage\",\n\t\t\"mainEntity\": [\n\t\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Is LiteSpeed faster than Nginx or Apache for WordPress?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>Yes. With LSCache and PHP LSAPI, LiteSpeed typically delivers lower TTFB and higher requests per second than Nginx (PHP-FPM) or Apache, especially under concurrency. The server-level cache and HTTP\/3\/QUIC support significantly improve Core Web Vitals for dynamic sites.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"How do I enable HTTP\/3 in LiteSpeed?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>Open UDP\/443 in your firewall, then in WebAdmin go to your SSL listener and set QUIC to \u201cEnable.\u201d Ensure TLS 1.3 is active. Verify using curl --http3 or an online HTTP\/3 validator.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"What\u2019s the difference between OpenLiteSpeed and LiteSpeed Enterprise?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>OpenLiteSpeed is free and ideal for single servers; LiteSpeed Enterprise is commercial with near-complete Apache compatibility and tight integration with control panels (cPanel\/DirectAdmin\/Plesk). Enterprise is recommended for shared hosting and multi-tenant environments.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"Which ports must be open for LiteSpeed?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>Open 80\/TCP and 443\/TCP for HTTP\/HTTPS. For HTTP\/3, also open 443\/UDP. WebAdmin uses 7080\/TCP (restrict or tunnel in production).<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t,\t\t\t\t{\n\t\t\t\t\"@type\": \"Question\",\n\t\t\t\t\"name\": \"How do I switch PHP versions (lsphp) later?\",\n\t\t\t\t\"acceptedAnswer\": {\n\t\t\t\t\t\"@type\": \"Answer\",\n\t\t\t\t\t\"text\": \"<p>Install the new version (e.g., lsphp83 and modules), then in WebAdmin change your external app Command to \/usr\/local\/lsws\/lsphp83\/bin\/lsphp, update handlers as needed, and reload lsws. Test in a staging site before switching production.<\/p>\"\n\t\t\t\t\t\t\t\t\t}\n\t\t\t}\n\t\t\t\t\t\t]\n\t}\n<\/script>\n\n\n\n<h2 class=\"wp-block-heading\" class=\"wp-block-heading\" id=\"next-steps\"><strong>Next Steps<\/strong><\/h2>\n\n\n\n<p>Deploy LSCache on your CMS, enable HTTP\/3, and benchmark with tools like k6, wrk, or PageSpeed Insights. 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