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+<?xml version="1.0" encoding="ISO-8859-1"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head><!--
+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+ This file is generated from xml source: DO NOT EDIT
+ XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+ -->
+<title>Binding - Apache HTTP Server</title>
+<link href="./style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
+<link href="./style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" />
+<link href="./style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" />
+<link href="./images/favicon.ico" rel="shortcut icon" /></head>
+<body id="manual-page"><div id="page-header">
+<p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/directives.html">Directives</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p>
+<p class="apache">Apache HTTP Server Version 2.0</p>
+<img alt="" src="./images/feather.gif" /></div>
+<div class="up"><a href="./"><img title="&lt;-" alt="&lt;-" src="./images/left.gif" /></a></div>
+<div id="path">
+<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="./">Version 2.0</a></div><div id="page-content"><div id="preamble"><h1>Binding</h1>
+<div class="toplang">
+<p><span>Available Languages: </span><a href="./en/bind.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="./es/bind.html" hreflang="es" rel="alternate" title="Español">&nbsp;es&nbsp;</a> |
+<a href="./fr/bind.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a> |
+<a href="./ja/bind.html" hreflang="ja" rel="alternate" title="Japanese">&nbsp;ja&nbsp;</a> |
+<a href="./ko/bind.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a> |
+<a href="./tr/bind.html" hreflang="tr" rel="alternate" title="Türkçe">&nbsp;tr&nbsp;</a></p>
+</div>
+
+ <p>Configuring Apache to listen on specific addresses and ports.</p>
+ </div>
+<div id="quickview"><ul id="toc"><li><img alt="" src="./images/down.gif" /> <a href="#overview">Overview</a></li>
+<li><img alt="" src="./images/down.gif" /> <a href="#ipv6">Special IPv6 Considerations</a></li>
+<li><img alt="" src="./images/down.gif" /> <a href="#virtualhost">How This Works With Virtual Hosts</a></li>
+</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></div>
+<div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
+<div class="section">
+<h2><a name="overview" id="overview">Overview</a></h2>
+
+
+ <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">&lt;VirtualHost&gt;</a></code></li><li><code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code></li></ul></td></tr></table>
+
+
+ <p>When Apache starts, it binds to some port and address on
+ the local machine and waits for incoming requests. By default,
+ it listens to all addresses on the machine. However, it needs to
+ be told to listen on specific ports, or to listen on only selected
+ addresses, or a combination. This is often combined with the
+ Virtual Host feature which determines how Apache responds to
+ different IP addresses, hostnames and ports.</p>
+
+ <p>The <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code>
+ directive tells the server to accept
+ incoming requests only on the specified port or
+ address-and-port combinations. If only a port number is
+ specified in the <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code>
+ directive, the server
+ listens to the given port on all interfaces. If an IP address
+ is given as well as a port, the server will listen on the given
+ port and interface. Multiple <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> directives may be used to
+ specify a number of addresses and ports to listen on. The
+ server will respond to requests from any of the listed
+ addresses and ports.</p>
+
+ <p>For example, to make the server accept connections on both
+ port 80 and port 8000, use:</p>
+
+ <div class="example"><p><code>
+ Listen 80<br />
+ Listen 8000
+ </code></p></div>
+
+ <p>To make the server accept connections on two specified
+ interfaces and port numbers, use</p>
+
+ <div class="example"><p><code>
+ Listen 192.170.2.1:80<br />
+ Listen 192.170.2.5:8000
+ </code></p></div>
+
+ <p>IPv6 addresses must be surrounded in square brackets, as in the
+ following example:</p>
+
+ <div class="example"><p><code>
+ Listen [2001:db8::a00:20ff:fea7:ccea]:80
+ </code></p></div>
+ </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
+<div class="section">
+<h2><a name="ipv6" id="ipv6">Special IPv6 Considerations</a></h2>
+
+
+ <p>A growing number of platforms implement IPv6, and APR supports
+ IPv6 on most of these platforms, allowing Apache to allocate IPv6
+ sockets and handle requests which were sent over IPv6.</p>
+
+ <p>One complicating factor for Apache administrators is whether or
+ not an IPv6 socket can handle both IPv4 connections and IPv6
+ connections. Handling IPv4 connections with an IPv6 socket uses
+ IPv4-mapped IPv6 addresses, which are allowed by default on most
+ platforms but are disallowed by default on FreeBSD, NetBSD, and
+ OpenBSD in order to match the system-wide policy on those
+ platforms. But even on systems where it is disallowed by default, a
+ special <code class="program"><a href="./programs/configure.html">configure</a></code> parameter can change this behavior
+ for Apache.</p>
+
+ <p>If you want Apache to handle IPv4 and IPv6 connections with a
+ minimum of sockets, which requires using IPv4-mapped IPv6 addresses,
+ specify the <code>--enable-v4-mapped</code> <code class="program"><a href="./programs/configure.html">configure</a></code>
+ option and use generic <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code>
+ directives like the following:</p>
+
+ <div class="example"><p><code>
+ Listen 80
+ </code></p></div>
+
+ <p>With <code>--enable-v4-mapped</code>, the Listen directives in the
+ default configuration file created by Apache will use this form.
+ <code>--enable-v4-mapped</code> is the default on all platforms but
+ FreeBSD, NetBSD, and OpenBSD, so this is probably how your Apache was
+ built.</p>
+
+ <p>If you want Apache to handle IPv4 connections only, regardless of
+ what your platform and APR will support, specify an IPv4 address on all
+ <code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> directives, as in the
+ following examples:</p>
+
+ <div class="example"><p><code>
+ Listen 0.0.0.0:80<br />
+ Listen 192.170.2.1:80
+ </code></p></div>
+
+ <p>If you want Apache to handle IPv4 and IPv6 connections on separate
+ sockets (i.e., to disable IPv4-mapped addresses), specify the
+ <code>--disable-v4-mapped</code> <code class="program"><a href="./programs/configure.html">configure</a></code> option and
+ use specific Listen directives like the following:</p>
+
+ <div class="example"><p><code>
+ Listen [::]:80<br />
+ Listen 0.0.0.0:80
+ </code></p></div>
+
+ <p>With <code>--disable-v4-mapped</code>, the Listen directives in the
+ default configuration file created by Apache will use this form.
+ <code>--disable-v4-mapped</code> is the default on FreeBSD, NetBSD, and
+ OpenBSD.</p>
+
+ </div><div class="top"><a href="#page-header"><img alt="top" src="./images/up.gif" /></a></div>
+<div class="section">
+<h2><a name="virtualhost" id="virtualhost">How This Works With Virtual Hosts</a></h2>
+
+
+ <p><code class="directive"><a href="./mod/mpm_common.html#listen">Listen</a></code> does not implement
+ Virtual Hosts. It only tells the main server what addresses and ports to
+ listen to. If no <code class="directive"><a href="./mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code> directives are used, the server will behave
+ the same for all accepted requests. However,
+ <code class="directive"><a href="./mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code>
+ can be used to specify a different behavior
+ for one or more of the addresses and ports. To implement a
+ VirtualHost, the server must first be told to listen to the
+ address and port to be used. Then a
+ <code class="directive"><a href="./mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code> section
+ should be created for a specified address and port to set the
+ behavior of this virtual host. Note that if the
+ <code class="directive"><a href="./mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code>
+ is set for an address and port that the
+ server is not listening to, it cannot be accessed.</p>
+ </div></div>
+<div class="bottomlang">
+<p><span>Available Languages: </span><a href="./en/bind.html" title="English">&nbsp;en&nbsp;</a> |
+<a href="./es/bind.html" hreflang="es" rel="alternate" title="Español">&nbsp;es&nbsp;</a> |
+<a href="./fr/bind.html" hreflang="fr" rel="alternate" title="Français">&nbsp;fr&nbsp;</a> |
+<a href="./ja/bind.html" hreflang="ja" rel="alternate" title="Japanese">&nbsp;ja&nbsp;</a> |
+<a href="./ko/bind.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a> |
+<a href="./tr/bind.html" hreflang="tr" rel="alternate" title="Türkçe">&nbsp;tr&nbsp;</a></p>
+</div><div id="footer">
+<p class="apache">Copyright 2009 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
+<p class="menu"><a href="./mod/">Modules</a> | <a href="./mod/directives.html">Directives</a> | <a href="./faq/">FAQ</a> | <a href="./glossary.html">Glossary</a> | <a href="./sitemap.html">Sitemap</a></p></div>
+</body></html> \ No newline at end of file