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  &lt;h2 class=&quot;ls-text-thin&quot;&gt;
    LiteSpeed Web Server
    &lt;br /&gt;
    &lt;span class=&quot;current&quot;&gt;&lt;a href=&quot;index.html&quot;&gt;Users' Manual&lt;/a&gt;&lt;/span&gt;
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  &lt;h3 class=&quot;ls-text-muted&quot;&gt;Version 6.3 &amp;nbsp;&amp;#8212;&amp;nbsp;Rev. 0&lt;/h3&gt;
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      &lt;li&gt;&lt;a href=&quot;license.html&quot;&gt;License Enterprise&lt;/a&gt;&lt;/li&gt;
      &lt;li&gt;&lt;span class=&quot;current&quot;&gt;&lt;a href=&quot;intro.html&quot;&gt;Introduction&lt;/a&gt;&lt;/span&gt;&lt;/li&gt;
      &lt;li&gt;&lt;a href=&quot;install.html&quot;&gt;Installation&lt;/a&gt;&lt;/li&gt;
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          &lt;li&gt;&lt;a href=&quot;ServLog_Help.html&quot;&gt;Server Log&lt;/a&gt;&lt;/li&gt;
	      &lt;li&gt;&lt;a href=&quot;ServTuning_Help.html&quot;&gt;Server Tuning&lt;/a&gt;&lt;/li&gt;
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            &lt;li&gt;&lt;a href=&quot;External_FCGI_Auth.html&quot;&gt;Fast CGI Authorizer&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;External_LSAPI.html&quot;&gt;LSAPI App&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;External_Servlet.html&quot;&gt;Servlet Engine&lt;/a&gt;&lt;/li&gt;
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          &lt;li&gt;&lt;a href=&quot;ScriptHandler_Help.html&quot;&gt;Script Handler&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href=&quot;PHP_Help.html&quot;&gt;PHP&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href=&quot;App_Server_Help.html&quot;&gt;App Server Settings&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href=&quot;Listeners_General_Help.html&quot;&gt;Listener General&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href=&quot;Listeners_SSL_Help.html&quot;&gt;Listener SSL&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href=&quot;Templates_Help.html&quot;&gt;Virtual Host Templates&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href=&quot;VirtualHosts_Help.html&quot;&gt;Virtual Host Basic&lt;/a&gt;&lt;/li&gt;
          &lt;li&gt;&lt;a href=&quot;VHGeneral_Help.html&quot;&gt;Virtual Host General&lt;/a&gt;&lt;/li&gt;
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            &lt;li&gt;&lt;a href=&quot;Servlet_Context.html&quot;&gt;Servlet Context&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;FCGI_Context.html&quot;&gt;Fast CGI Context&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;LSAPI_Context.html&quot;&gt;LSAPI Context&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;Proxy_Context.html&quot;&gt;Proxy Context&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;CGI_Context.html&quot;&gt;CGI Context&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;LB_Context.html&quot;&gt;Load Balancer Context&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;Redirect_Context.html&quot;&gt;Redirect Context&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;App_Server_Context.html&quot;&gt;App Server Context&lt;/a&gt;&lt;/li&gt;
            &lt;li&gt;&lt;a href=&quot;Rails_Context.html&quot;&gt;Rack/Rails Context&lt;/a&gt;&lt;/li&gt;
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          &lt;li&gt;&lt;a href=&quot;VHAddOns_Help.html&quot;&gt;Add-ons&lt;/a&gt;&lt;/li&gt;
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      &lt;li&gt;
        &lt;a href=&quot;webconsole.html&quot;&gt;Web Console&lt;/a&gt;
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          &lt;li&gt;
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              Admin Listener General
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          &lt;li&gt;
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&lt;article class=&quot;contentwrapper ls-col-3-5 clearfix&quot;&gt;&lt;div class=&quot;nav-bar ls-spacer-micro-top&quot;&gt;&lt;div class=&quot;prev&quot;&gt;&amp;#171 &lt;a href=&quot;license.html&quot;&gt;EULA - Enterprise Edition&lt;/a&gt;&lt;/div&gt;&lt;div class=&quot;center&quot;&gt;&lt;a href=&quot;index.html&quot;&gt;Home&lt;/a&gt;&lt;/div&gt;&lt;div class=&quot;next&quot;&gt;&lt;a href=&quot;install.html&quot;&gt;Installation&lt;/a&gt; &amp;#187;&lt;/div&gt;&lt;/div&gt;
&lt;h1&gt;Introduction&lt;/h1&gt;
&lt;h3&gt;Overview&lt;/h3&gt;
&lt;p&gt;
  LiteSpeed Web Server is an Apache-interchangeable, high performance, secure, easy-to-use web server. It can handle 
  thousands of concurrent connections with a small memory footprint. Its security features also make it much less 
  vulnerable to various attacks.
&lt;/p&gt;

&lt;h3&gt;LiteSpeed Exclusive Features&lt;/h3&gt;
&lt;ul&gt;
  &lt;li&gt;Apache Drop-In Replacement&lt;/li&gt;
  &lt;li&gt;HTTP/2 Support&lt;/li&gt;
  &lt;li&gt;QUIC Support&lt;/li&gt;
  &lt;li&gt;Zero Downtime&lt;/li&gt;
  &lt;li&gt;Anti-DDoS Advances&lt;/li&gt;
  &lt;li&gt;Event-Driven Architecture&lt;/li&gt;
&lt;/ul&gt;

&lt;h3&gt;Features&lt;/h3&gt;
&lt;ul&gt;
  &lt;li&gt;
    &lt;p&gt;&lt;strong&gt;HTTP/1.1&lt;/strong&gt;&lt;/p&gt;
    &lt;ul&gt;
      &lt;li&gt;HTTP/2&lt;/li&gt;
      &lt;li&gt;HTTP 1.0/1.1 compliant&lt;/li&gt;
      &lt;li&gt;Scripting Languages: PHP, Perl, Ruby, Python, Java, etc...&lt;/li&gt;
      &lt;li&gt;Server APIs: LiteSpeed SAPI (LSAPI), CGI, FCGI, AJPv13, Proxy&lt;/li&gt;
      &lt;li&gt;HTTPS&lt;/li&gt;
      &lt;li&gt;IPv4 and IPv6&lt;/li&gt;
      &lt;li&gt;Unlimited IP and name-based virtual hosting&lt;/li&gt;
      &lt;li&gt;Unlimited concurrent connections&lt;/li&gt;
      &lt;li&gt;GZIP compression&lt;/li&gt;
      &lt;li&gt;Support for SPDY/2, 3, and 3.1&lt;/li&gt;
      &lt;li&gt;WebSocket proxying&lt;/li&gt;
      &lt;li&gt;Runs on Linux, FreeBSD, MacOSX, Solaris&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/li&gt;
  &lt;li&gt;
    &lt;p&gt;&lt;strong&gt;Performance &amp; Scalability&lt;/strong&gt;&lt;/p&gt;
    &lt;ul&gt;
      &lt;li&gt;Event-driven architecture&lt;/li&gt;
      &lt;li&gt;Hundreds of thousands of concurrent connections&lt;/li&gt;
      &lt;li&gt;Tiny memory footprint&lt;/li&gt;
      &lt;li&gt;Sendfile()&lt;/li&gt;
      &lt;li&gt;Asynchronous I/O support&lt;/li&gt;
      &lt;li&gt;LiteSpeed's exclusive server API (LSAPI) delivers the best dynamic content performance&lt;/li&gt;
      &lt;li&gt;Unrivaled PHP suEXEC performance for shared hosting&lt;/li&gt;
      &lt;li&gt;Three different PHP process modes for different needs and abilities&lt;/li&gt;
      &lt;li&gt;Static content up to 5x faster than Apache&lt;/li&gt;
      &lt;li&gt;Dynamic content up to 40x faster than Apache&lt;/li&gt;
      &lt;li&gt;HTTPS 3x faster than Apache&lt;/li&gt;
      &lt;li&gt;OCSP stapling&lt;/li&gt;
      &lt;li&gt;Built-in page caching&lt;/li&gt;
      &lt;li&gt;Turbocharge Magento and other web applications with ESI support&lt;/li&gt;
      &lt;li&gt;Advanced .htaccess caching removes performance bottlenecks associated with .htaccess use in Apache&lt;/li&gt;
      &lt;li&gt;CloudLinux LVE compatibility&lt;/li&gt;
      &lt;li&gt;Increases scalability of web applications&lt;/li&gt;
      &lt;li&gt;
        Separation of server and web applications allows for buffering of requests and responses, leading to better
        handling of multiple connections
      &lt;/li&gt;
      &lt;li&gt;Just in time configuration cuts restart time&lt;/li&gt;
      &lt;li&gt;CPU affinity allows for greater use of CPU cache&lt;/li&gt;     
    &lt;/ul&gt;
  &lt;/li&gt;
  &lt;li&gt;
    &lt;p&gt;&lt;strong&gt;Apache Compatibility&lt;/strong&gt;&lt;/p&gt;
    &lt;ul&gt;
      &lt;li&gt;Reads Apache's configuration files directly&lt;/li&gt;
      &lt;li&gt;Drop-in Apache replacement for cPanel, Plesk, DirectAdmin, Interworx, etc.&lt;/li&gt;
      &lt;li&gt;Full .htaccess support&lt;/li&gt;
      &lt;li&gt;Compatible with Apache core modules&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/li&gt;
  &lt;li&gt;
    &lt;p&gt;&lt;strong&gt;Security&lt;/strong&gt;&lt;/p&gt;
    &lt;ul&gt;
      &lt;li&gt;Built-in anti-DDoS connection and bandwidth throttling&lt;/li&gt;
      &lt;li&gt;mod_security compatibility&lt;/li&gt;
      &lt;li&gt;Compatibility with Atomic Secured Linux and Atomicorp Realtime ModSecurity Rules&lt;/li&gt;
      &lt;li&gt;Anti SSL BEAST and renegotiation attack capabilities&lt;/li&gt;
      &lt;li&gt;Strict HTTP request validation&lt;/li&gt;
      &lt;li&gt;Denies buffer-overrun attempts&lt;/li&gt;
      &lt;li&gt;PHP/Ruby/CGI/FCGI/LSAPI suEXEC&lt;/li&gt;
      &lt;li&gt;CloudLinux CageFS compatibility&lt;/li&gt;
      &lt;li&gt;External application and full server chroot ability&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/li&gt;
  &lt;li&gt;
    &lt;p&gt;&lt;strong&gt;High Availability&lt;/strong&gt;&lt;/p&gt;
    &lt;ul&gt;
      &lt;li&gt;Apply changes with zero downtime&lt;/li&gt;
      &lt;li&gt;Zero downtime server software upgrade&lt;/li&gt;
      &lt;li&gt;Recovers from service failure instantly&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/li&gt;
  &lt;li&gt;
    &lt;p&gt;&lt;strong&gt;Ease of Use&lt;/strong&gt;&lt;/p&gt;
    &lt;ul&gt;
      &lt;li&gt;Control panel plugins (cPanel, DirectAdmin, and Plesk)&lt;/li&gt;
      &lt;li&gt;Officially supported by cPanel&lt;/li&gt;
      &lt;li&gt;Intuitive WebAdmin console GUI&lt;/li&gt;
      &lt;li&gt;Virtual host templates for easy configuration&lt;/li&gt;
      &lt;li&gt;Real-time service monitoring&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/li&gt;
  &lt;li&gt;
    &lt;p&gt;&lt;strong&gt;Advanced Features&lt;/strong&gt;&lt;/p&gt;
    &lt;ul&gt;
      &lt;li&gt;Easily run multiple versions of PHP on one server&lt;/li&gt;
      &lt;li&gt;MS FrontPage Server Extensions&lt;/li&gt;
      &lt;li&gt;Geo-IP lookup&lt;/li&gt;
      &lt;li&gt;Stream logs to external logger&lt;/li&gt;
      &lt;li&gt;Custom log formatting&lt;/li&gt;
      &lt;li&gt;Backend load balancing&lt;/li&gt;
      &lt;li&gt;mp4/flv streaming&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/li&gt;
&lt;/ul&gt;&lt;/article&gt;&lt;div  class=&quot;ls-col-1-1&quot;&gt;&lt;footer class=&quot;copyright&quot;&gt;Copyright &amp;copy; 2003-2020. &lt;a href=&quot;https://www.litespeedtech.com&quot;&gt;LiteSpeed Technologies Inc.&lt;/a&gt; All rights reserved.&lt;/footer&gt;
&lt;/div&gt;&lt;/div&gt;
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