mirror of
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178 lines
8.5 KiB
HTML
178 lines
8.5 KiB
HTML
<!DOCTYPE html>
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<head>
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<meta charset="utf-8" />
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<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
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<title>OpenLiteSpeed Users' Manual - Introduction</title>
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<meta name="description" content="OpenLiteSpeed Users' Manual - Introduction." />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<link rel="shortcut icon" href="img/favicon.ico" />
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<link rel="stylesheet" type="text/css" href="css/hdoc.css">
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</head>
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<body>
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<div class="pagewrapper clearfix"><aside class="sidetree ls-col-1-5">
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<figure>
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<img src="img/ols_logo.svg" alt="openlitespeed logo" width="150px"/>
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</figure>
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<h3 class="ls-text-thin">OpenLiteSpeed Web Server <a href="index.html"> Users' Manual</a></h3>
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<h5 class="ls-text-muted">Version 1.4 — Rev. 6</h5>
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<hr/>
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<div>
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<ul>
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<li><a href="license.html">License</a></li>
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<li><span class="current"><a href="intro.html">Introduction</a></span></li>
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<li><a href="install.html">Installation</a></li>
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<li><a href="admin.html">Administration</a>
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<ul class="level2"><li><a href="ServerStat_Help.html">Service Manager</a></li></ul></li>
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<li><a href="security.html">Security</a></li>
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<li><a href="config.html">Configuration</a>
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<ul class="level2">
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<li><a href="ServGeneral_Help.html">Server General</a></li>
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<li><a href="ServLog_Help.html">Server Log</a></li>
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<li><a href="ServTuning_Help.html">Server Tuning</a></li>
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<li><a href="ServSecurity_Help.html">Server Security</a></li>
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<li><a href="ExtApp_Help.html">External Apps</a></li>
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<ul class="level3">
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<li><a href="External_FCGI.html">Fast CGI App</a></li>
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<li><a href="External_FCGI_Auth.html">Fast CGI Authorizer</a></li>
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<li><a href="External_LSAPI.html">LSAPI App</a></li>
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<li><a href="External_Servlet.html">Servlet Engine</a></li>
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<li><a href="External_WS.html">Web Server</a></li>
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<li><a href="External_PL.html">Piped logger</a></li>
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<li><a href="External_LB.html">Load Balancer</a></li>
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</ul>
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<li><a href="ScriptHandler_Help.html">Script Handler</a></li>
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<li><a href="Rails_Help.html">Rack/Rails Settings</a></li>
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<li><a href="Module_Help.html">Module Configuration</a></li>
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<li><a href="Listeners_General_Help.html">Listener General</a></li>
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<li><a href="Listeners_SSL_Help.html">Listener SSL</a></li>
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<li><a href="Templates_Help.html">Templates</a></li>
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<li><a href="VirtualHosts_Help.html">Virtual Host Basic</a></li>
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<li><a href="VHGeneral_Help.html">Virtual Host General</a></li>
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<li><a href="VHSecurity_Help.html">Virtual Host Security</a></li>
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<li><a href="VHSSL_Help.html">Virtual Host SSL</a></li>
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<li><a href="Rewrite_Help.html">Rewrite</a></li>
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<li><a href="Context_Help.html">Context</a></li>
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<ul class="level3">
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<li><a href="Static_Context.html">Static Context</a></li>
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<li><a href="Java_Web_App_Context.html">Java Web App Context</a></li>
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<li><a href="Servlet_Context.html">Servlet Context</a></li>
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<li><a href="FCGI_Context.html">Fast CGI Context</a></li>
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<li><a href="LSAPI_Context.html">LSAPI Context</a></li>
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<li><a href="Proxy_Context.html">Proxy Context</a></li>
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<li><a href="CGI_Context.html">CGI Context</a></li>
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<li><a href="LB_Context.html">Load Balancer Context</a></li>
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<li><a href="Redirect_Context.html">Redirect Context</a></li>
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<li><a href="Rails_Context.html">Rack/Rails Context</a></li>
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<li><a href="Module_Context.html">Module Handler Context</a></li>
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</ul>
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<li><a href="VHWebSocket_Help.html">Web Socket Proxy</a></li>
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</ul>
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</li>
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<li><a href="webconsole.html">Web Console</a>
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<ul class="level2">
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<li><a href="AdminGeneral_Help.html">Admin Console General</a></li>
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<li><a href="AdminSecurity_Help.html">Admin Console Security</a></li>
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<li><a href="AdminListeners_General_Help.html">Admin Listener General</a></li>
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<li><a href="AdminListeners_SSL_Help.html">Admin Listener SSL</a></li>
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</ul>
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</li>
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</ul>
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</div>
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</aside>
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<article class="contentwrapper ls-col-3-5 clearfix"><div class="nav-bar ls-spacer-micro-top"><div class="prev">« <a href="license.html">License</a></div><div class="center"><a href="index.html">Home</a></div><div class="next"><a href="install.html">Installation</a> »</div></div>
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<h1>Introduction</h1>
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<h3>Overview</h3>
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<p>LiteSpeed Web Server is a high performance, secure, easy-to-use web server.
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It can handle thousands of concurrent connections with a small memory footprint.
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Its security features also make it much less vulnerable to various attacks.
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</p>
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<h3>Basic Features</h3>
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<ul>
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<li><p><strong>HTTP/1.1</strong></p>
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<ul>
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<li>Chunked transfer encoding</li>
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<li>Basic authentication (password file and LDAP backend)</li>
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<li>Entity tag</li>
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<li>Single and multiple ranges requests</li>
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<li>Static/dynamic response compression (gzip)</li>
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<li>Apache-compatible URL rewrite</li>
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<li>IPv6 support</li>
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<li>Apache mod_geoip compatible geotargeting support</li>
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</ul>
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</li>
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<li><p><strong>Dynamic Content Generation</strong></p>
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<p>LiteSpeed Web Server supports the following dynamic content generation methods:</p>
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<ul>
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<li>CGI/1.1 with suEXEC</li>
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<li>Fast CGI with suEXEC</li>
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<li>PHP with suEXEC through LiteSpeed PHP SAPI (top-of-the-line PHP performance with a mod_php equivalent feature set)
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<li>JSP/servlets (interface with AJP v1.3 compatible backend servlet engine)</li>
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<li>Proxy (interface with any web server/application server that supports HTTP protocol)</li>
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<li>Ruby on Rails with suEXEC through Ruby LSAPI module (best-in-class performance, easy deployment, supports dynamic spawning)
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</ul>
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</li>
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<li><p><strong>Virtual Hosting</strong></p>
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<ul>
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<li>Supports IP-based and name-based virtual hosting</li>
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<li>Virtual host templates make virtual hosting configuration easy</li>
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</ul>
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</li>
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</ul>
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<h3>Security</h3>
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<p>LiteSpeed Web Server provides the following security features:</p>
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<ul>
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<li><strong>SSL</strong>
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<p>Supports SSLv3/TLSv1. <i>This product includes software developed by the OpenSSL Project
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for use in the OpenSSL Toolkit (http://www.openssl.org/)</i></p></li>
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<li><strong>IP Level Throttling</strong>
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<p>Network bandwidth and request rate for a single IP address can be limited
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regardless of the number of connections. </p></li>
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<li><strong>Comprehensive Connection Accounting</strong>
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<p>Comprehensive control of concurrent connections allowed from a single IP address.</p></li>
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<li><strong>Access Control</strong>
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<p>Access control rules can be set at server, virtual host, and per-directory (context)
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levels.</p> </li>
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<li><strong>External Application Shield</strong>
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<p>LiteSpeed Web Server shields CGI, Fast CGI and servlet engines from talking directly
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to web clients to ensure maximum reliability and performance. </p></li>
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<li><strong>CGI Resources Consumption Limit</strong>
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<p>LiteSpeed Web Server prevents bad CGI scripts from overloading the server by
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limiting the system resources CGI applications can consume.</p></li>
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<li><strong>DoS Attack Prevention</strong>
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<p>LiteSpeed Web Server is much less vulnerable to HTTP Denial of Service(DoS)
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and Distributed Denial of Service (DDoS) attacks thanks to IP-level throttling,
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connection accounting, and its outstanding performance and scalability. </p></li>
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</ul>
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<h3>Reliability</h3>
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<p>LiteSpeed Web Server recovers from crashes instantly. LiteSpeed Web Server also runs completely in user space.
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Thus the server can easily switch between different versions without affecting the reliability of the operating system.
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</p>
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<p>CGI, Fast CGI and Servlet engine run in their standalone processes, the
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reliability of web server is not affected by the quality of third party software.</p>
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<h3>User Friendly</h3>
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<ul>
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<li>No need to build the executable yourself.</li>
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<li>Easy to install.</li>
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<li>Easy to control and configure through the WebAdmin interface.</li>
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<li>Sets up PHP and PHP accelerators automatically.</li>
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<li>Applies most changes without restarting the server.</li>
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</ul>
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</article><div class="ls-col-1-1"><footer class="copyright">Copyright © 2013-2017. <a href="https://www.litespeedtech.com">LiteSpeed Technologies Inc.</a> All rights reserved.</footer>
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</div></div>
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</body>
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</html>
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