github.com/krum110487/go-htaccess@v0.0.0-20240316004156-60641c8e7598/tests/data/apache_2_2_34/manual/bind.html.en (about) 1 <?xml version="1.0" encoding="ISO-8859-1"?> 2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 3 <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head> 4 <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" /> 5 <!-- 6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 7 This file is generated from xml source: DO NOT EDIT 8 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 9 --> 10 <title>Binding - Apache HTTP Server Version 2.2</title> 11 <link href="./style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> 12 <link href="./style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> 13 <link href="./style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="./style/css/prettify.css" /> 14 <script src="./style/scripts/prettify.min.js" type="text/javascript"> 15 </script> 16 17 <link href="./images/favicon.ico" rel="shortcut icon" /><link href="http://httpd.apache.org/docs/current/bind.html" rel="canonical" /></head> 18 <body id="manual-page"><div id="page-header"> 19 <p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/directives.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p> 20 <p class="apache">Apache HTTP Server Version 2.2</p> 21 <img alt="" src="./images/feather.gif" /></div> 22 <div class="up"><a href="./"><img title="<-" alt="<-" src="./images/left.gif" /></a></div> 23 <div id="path"> 24 <a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="./">Version 2.2</a></div><div id="page-content"><div class="retired"><h4>Please note</h4> 25 <p> This document refers to a legacy release (<strong>2.2</strong>) of Apache httpd. The active release (<strong>2.4</strong>) is documented <a href="http://httpd.apache.org/docs/current">here</a>. If you have not already upgraded, please follow <a href="http://httpd.apache.org/docs/current/upgrading.html">this link</a> for more information.</p> 26 <p>You may follow <a href="http://httpd.apache.org/docs/current/bind.html">this link</a> to go to the current version of this document.</p></div><div id="preamble"><h1>Binding</h1> 27 <div class="toplang"> 28 <p><span>Available Languages: </span><a href="./de/bind.html" hreflang="de" rel="alternate" title="Deutsch"> de </a> | 29 <a href="./en/bind.html" title="English"> en </a> | 30 <a href="./fr/bind.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | 31 <a href="./ja/bind.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | 32 <a href="./ko/bind.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | 33 <a href="./tr/bind.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> 34 </div> 35 36 <p>Configuring Apache to listen on specific addresses and ports.</p> 37 </div> 38 <div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#overview">Overview</a></li> 39 <li><img alt="" src="./images/down.gif" /> <a href="#ipv6">Special IPv6 Considerations</a></li> 40 <li><img alt="" src="./images/down.gif" /> <a href="#virtualhost">How This Works With Virtual Hosts</a></li> 41 </ul><h3>See also</h3><ul class="seealso"><li><a href="vhosts/">Virtual Hosts</a></li><li><a href="dns-caveats.html">DNS Issues</a></li></ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div> 42 <div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div> 43 <div class="section"> 44 <h2><a name="overview" id="overview">Overview</a></h2> 45 46 47 <table class="related"><tr><th>Related Modules</th><th>Related Directives</th></tr><tr><td><ul><li><code class="module"><a href="./mod/core.html">core</a></code></li><li><code class="module"><a href="./mod/mpm_common.html">mpm_common</a></code></li></ul></td><td><ul><li><code class="directive"><a href="./mod/core.html#virtualhost"><VirtualHost></a></code></li><li><code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code></li></ul></td></tr></table> 48 49 50 <p>When Apache starts, it binds to some port and address on 51 the local machine and waits for incoming requests. By default, 52 it listens to all addresses on the machine. However, it may need to 53 be told to listen on specific ports, or only on selected 54 addresses, or a combination of both. This is often combined with the 55 Virtual Host feature, which determines how Apache responds to 56 different IP addresses, hostnames and ports.</p> 57 58 <p>The <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> 59 directive tells the server to accept 60 incoming requests only on the specified ports or 61 address-and-port combinations. If only a port number is 62 specified in the <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> 63 directive, the server 64 listens to the given port on all interfaces. If an IP address 65 is given as well as a port, the server will listen on the given 66 port and interface. Multiple <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> directives may be used to 67 specify a number of addresses and ports to listen on. The 68 server will respond to requests from any of the listed 69 addresses and ports.</p> 70 71 <p>For example, to make the server accept connections on both 72 port 80 and port 8000, on all interfaces, use:</p> 73 74 <div class="example"><p><code> 75 Listen 80<br /> 76 Listen 8000 77 </code></p></div> 78 79 <p>To make the server accept connections on port 80 for one interface, 80 and port 8000 on another, use</p> 81 82 <div class="example"><p><code> 83 Listen 192.0.2.1:80<br /> 84 Listen 192.0.2.5:8000 85 </code></p></div> 86 87 <p>IPv6 addresses must be enclosed in square brackets, as in the 88 following example:</p> 89 90 <div class="example"><p><code> 91 Listen [2001:db8::a00:20ff:fea7:ccea]:80 92 </code></p></div> 93 </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div> 94 <div class="section"> 95 <h2><a name="ipv6" id="ipv6">Special IPv6 Considerations</a></h2> 96 97 98 <p>A growing number of platforms implement IPv6, and 99 <a class="glossarylink" href="./glossary.html#apr" title="see glossary">APR</a> supports IPv6 on most of these platforms, 100 allowing Apache to allocate IPv6 sockets, and to handle requests sent 101 over IPv6.</p> 102 103 <p>One complicating factor for Apache administrators is whether or 104 not an IPv6 socket can handle both IPv4 connections and IPv6 105 connections. Handling IPv4 connections with an IPv6 socket uses 106 IPv4-mapped IPv6 addresses, which are allowed by default on most 107 platforms, but are disallowed by default on FreeBSD, NetBSD, and 108 OpenBSD, in order to match the system-wide policy on those 109 platforms. On systems where it is disallowed by default, a 110 special <code class="program"><a href="./programs/configure.html">configure</a></code> parameter can change this behavior 111 for Apache.</p> 112 113 <p>On the other hand, on some platforms, such as Linux and Tru64, the 114 <strong>only</strong> way to handle both IPv6 and IPv4 is to use 115 mapped addresses. If you want Apache to handle IPv4 and IPv6 connections 116 with a minimum of sockets, which requires using IPv4-mapped IPv6 117 addresses, specify the <code>--enable-v4-mapped</code> <code class="program"><a href="./programs/configure.html">configure</a></code> option.</p> 118 119 <p><code>--enable-v4-mapped</code> is the default on all platforms except 120 FreeBSD, NetBSD, and OpenBSD, so this is probably how your Apache was 121 built.</p> 122 123 <p>If you want Apache to handle IPv4 connections only, regardless of 124 what your platform and APR will support, specify an IPv4 address on all 125 <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> directives, as in the 126 following examples:</p> 127 128 <div class="example"><p><code> 129 Listen 0.0.0.0:80<br /> 130 Listen 192.0.2.1:80 131 </code></p></div> 132 133 <p>If your platform supports it and you want Apache to handle IPv4 and 134 IPv6 connections on separate sockets (i.e., to disable IPv4-mapped 135 addresses), specify the <code>--disable-v4-mapped</code> <code class="program"><a href="./programs/configure.html">configure</a></code> option. <code>--disable-v4-mapped</code> is the 136 default on FreeBSD, NetBSD, and OpenBSD.</p> 137 </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div> 138 <div class="section"> 139 <h2><a name="virtualhost" id="virtualhost">How This Works With Virtual Hosts</a></h2> 140 141 142 <p> The <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> directive does not implement 143 Virtual Hosts - it only tells the 144 main server what addresses and ports to listen on. If no 145 <code class="directive"><a href="./mod/core.html#virtualhost"><VirtualHost></a></code> 146 directives are used, the server will behave 147 in the same way for all accepted requests. However, 148 <code class="directive"><a href="./mod/core.html#virtualhost"><VirtualHost></a></code> 149 can be used to specify a different behavior 150 for one or more of the addresses or ports. To implement a 151 VirtualHost, the server must first be told to listen to the 152 address and port to be used. Then a 153 <code class="directive"><a href="./mod/core.html#virtualhost"><VirtualHost></a></code> section 154 should be created for the specified address and port to set the 155 behavior of this virtual host. Note that if the 156 <code class="directive"><a href="./mod/core.html#virtualhost"><VirtualHost></a></code> 157 is set for an address and port that the 158 server is not listening to, it cannot be accessed.</p> 159 </div></div> 160 <div class="bottomlang"> 161 <p><span>Available Languages: </span><a href="./de/bind.html" hreflang="de" rel="alternate" title="Deutsch"> de </a> | 162 <a href="./en/bind.html" title="English"> en </a> | 163 <a href="./fr/bind.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | 164 <a href="./ja/bind.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | 165 <a href="./ko/bind.html" hreflang="ko" rel="alternate" title="Korean"> ko </a> | 166 <a href="./tr/bind.html" hreflang="tr" rel="alternate" title="Türkçe"> tr </a></p> 167 </div><div class="top"><a href="#page-header"><img src="./images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. 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