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c82fca6d3f5608b946f18d37e8710b1d71e3478dnd<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>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd<div class="up"><a href="./"><img title="<-" alt="<-" src="/images/left.gif" /></a></div>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs-project/">Documentation</a> > <a href="./">Version 2.1</a></div><div id="page-content"><div id="preamble"><h1>Binding</h1>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd <p>Configuring Apache to listen on specific addresses and ports.</p>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd<div id="quickview"><ul id="toc"><li><img alt="" src="/images/down.gif" /> <a href="#overview">Overview</a></li>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd<li><img alt="" src="/images/down.gif" /> <a href="#ipv6">Special IPv6 Considerations</a></li>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd<li><img alt="" src="/images/down.gif" /> <a href="#virtualhost">How This Works With Virtual Hosts</a></li>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd</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>
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c82fca6d3f5608b946f18d37e8710b1d71e3478dnd <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>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd <p>When Apache starts, it binds to some port and address on
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd the local machine and waits for incoming requests. By default,
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd it listens to all addresses on the machine. However, it needs to
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd be told to listen on specific ports, or to listen on only selected
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd addresses, or a combination. This is often combined with the
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd Virtual Host feature which determines how Apache responds to
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd different IP addresses, hostnames and ports.</p>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd <p>The <code class="directive"><a href="/mod/mpm_common.html#listen">Listen</a></code>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd directive tells the server to accept
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd incoming requests only on the specified port or
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd address-and-port combinations. If only a port number is
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd specified in the <code class="directive"><a href="/mod/mpm_common.html#listen">Listen</a></code>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd directive, the server
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd listens to the given port on all interfaces. If an IP address
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd is given as well as a port, the server will listen on the given
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd port and interface. Multiple Listen directives may be used to
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd specify a number of addresses and ports to listen on. The
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd server will respond to requests from any of the listed
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd addresses and ports.</p>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd <p>For example, to make the server accept connections on both
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd port 80 and port 8000, use:</p>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd Listen 80<br />
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd Listen 8000
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd <p>To make the server accept connections on two specified
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd interfaces and port numbers, use</p>
c82fca6d3f5608b946f18d37e8710b1d71e3478dnd Listen 192.170.2.1:80<br />
sockets by default (i.e., when no IP address is specified on the
<p class="apache">Maintained by the <a href="http://httpd.apache.org/docs-project/">Apache HTTP Server Documentation Project</a></p>
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