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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>mod_proxy_ftp - 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><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 2.2</p><img alt="" src="../images/feather.gif" /></div><div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div><div id="path"><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> > <a href="./">Modules</a></div><div id="page-content"><div id="preamble"><h1>Apache Module mod_proxy_ftp</h1><div class="toplang"><p><span>Available Languages: </span><a href="../en/mod/mod_proxy_ftp.html" title="English"> en </a></p></div><table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>FTP support module for<code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></td></tr><tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr><tr><th><a href="module-dict.html#ModuleIdentifier">Module營dentifier:</a></th><td>proxy_ftp_module</td></tr><tr><th><a href="module-dict.html#SourceFile">Source燜ile:</a></th><td>mod_proxy_ftp.c</td></tr></table><h3>Summary</h3> <p>This module <em>requires</em> the service of <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>. It provides support for the proxying FTP sites. Note that FTP support is currently limited to the GET method.</p> <p>Thus, in order to get the ability of handling FTP proxy requests, <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code> and <code class="module"><a href="../mod/mod_proxy_ftp.html">mod_proxy_ftp</a></code> have to be present in the server.</p> <div class="warning"><h3>Warning</h3> <p>Do not enable proxying until you have <a href="mod_proxy.html#access">secured your server</a>. Open proxy servers are dangerous both to your network and to the Internet at large.</p> </div></div><div id="quickview"><h3 class="directives">Directives</h3><p>This module provides no directives.</p><h3>Topics</h3><ul id="topics"><li><img alt="" src="../images/down.gif" /> <a href="#mimetypes">Why doesn't file type <var>xxx</var> download via FTP?</a></li><li><img alt="" src="../images/down.gif" /> <a href="#type">How can I force an FTP ASCII download of File <var>xxx</var>?</a></li><li><img alt="" src="../images/down.gif" /> <a href="#ftpnonget">How can I do FTP upload?</a></li><li><img alt="" src="../images/down.gif" /> <a href="#percent2fhck">How can I access FTP files outside of my home directory?</a></li><li><img alt="" src="../images/down.gif" /> <a href="#ftppass">How can I hide the FTP cleartext password in my browser's URL line?</a></li></ul><h3>See also</h3><ul class="seealso"><li><code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code></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="mimetypes" id="mimetypes">Why doesn't file type <var>xxx</var> download via FTP?</a></h2> <p>You probably don't have that particular file type defined as <code>application/octet-stream</code> in your proxy's mime.types configuration file. A useful line can be</p> <div class="example"><pre>application/octet-stream bin dms lha lzh exe class tgz taz</pre></div> <p>Alternatively you may prefer to default everything to binary:</p> <div class="example"><pre>DefaultType application/octet-stream</pre></div> </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="type" id="type">How can I force an FTP ASCII download of File <var>xxx</var>?</a></h2> <p>In the rare situation where you must download a specific file using the FTP <code>ASCII</code> transfer method (while the default transfer is in <code>binary</code> mode), you can override <code class="module"><a href="../mod/mod_proxy.html">mod_proxy</a></code>'s default by suffixing the request with <code>;type=a</code> to force an ASCII transfer. (FTP Directory listings are always executed in ASCII mode, however.)</p> </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="ftpnonget" id="ftpnonget">How can I do FTP upload?</a></h2> <p>Currently, only GET is supported for FTP in mod_proxy. You can of course use HTTP upload (POST or PUT) through an Apache proxy.</p> </div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div><div class="section"><h2><a name="percent2fhck" id="percent2fhck">How can I access FTP files outside of my home directory?</a></h2> <p>An FTP URI is interpreted relative to the home directory of the user who is logging in. Alas, to reach higher directory levels you cannot use /../, as the dots are interpreted by the browser and not actually sent to the FTP server. To address this problem, the so called <dfn>Squid %2f hack</dfn> was implemented in the Apache FTP proxy; it is a solution which is also used by other popular proxy servers like the <a href="http://www.squid-cache.org/">Squid Proxy Cache</a>. By prepending <code>/%2f</code> to the path of your request, you can make such a proxy change the FTP starting directory to <code>/</code> (instead of the home directory). For example, to retrieve the file <code>/etc/motd</code>, you would use the URL:</p> <div class="example"><p><code> ftp://<var>user</var>@<var>host</var>/%2f/etc/motd </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="ftppass" id="ftppass">How can I hide the FTP cleartext password in my browser's URL line?</a></h2> <p>To log in to an FTP server by username and password, Apache uses different strategies. In absense of a user name and password in the URL altogether, Apache sends an anonymous login to the FTP server, <em>i.e.</em>,</p> <div class="example"><p><code> user: anonymous<br /> password: apache_proxy@ </code></p></div> <p>This works for all popular FTP servers which are configured for anonymous access.</p> <p>For a personal login with a specific username, you can embed the user name into the URL, like in:</p> <div class="example"><p><code> ftp://<var>username</var>@<var>host</var>/myfile </code></p></div> <p>If the FTP server asks for a password when given this username (which it should), then Apache will reply with a <code>401</code> (Authorization required) response, which causes the Browser to pop up the username/password dialog. Upon entering the password, the connection attempt is retried, and if successful, the requested resource is presented. The advantage of this procedure is that your browser does not display the password in cleartext (which it would if you had used</p> <div class="example"><p><code> ftp://<var>username</var>:<var>password</var>@<var>host</var>/myfile </code></p></div> <p>in the first place).</p> <div class="note"><h3>Note</h3> <p>The password which is transmitted in such a way is not encrypted on its way. It travels between your browser and the Apache proxy server in a base64-encoded cleartext string, and between the Apache proxy and the FTP server as plaintext. You should therefore think twice before accessing your FTP server via HTTP (or before accessing your personal files via FTP at all!) When using unsecure channels, an eavesdropper might intercept your password on its way.</p> </div> </div></div><div class="bottomlang"><p><span>Available Languages: </span><a href="../en/mod/mod_proxy_ftp.html" title="English"> en </a></p></div><div id="footer"><p class="apache">Copyright 2008 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>⌨️ 快捷键说明
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