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 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 5 This file is generated from xml source: DO NOT EDIT 6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 7 --> 8<title>mod_proxy_ftp - Apache HTTP Server</title> 9<link href="/style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> 10<link href="/style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> 11<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" /> 12<script src="/style/scripts/prettify.js" type="text/javascript"> 13</script> 14 15<link href="/images/favicon.ico" rel="shortcut icon" /></head> 16<body> 17<div id="page-header"> 18<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> 19<p class="apache">Apache HTTP Server Version 2.2</p> 20<img alt="" src="/images/feather.gif" /></div> 21<div class="up"><a href="./"><img title="<-" alt="<-" src="/images/left.gif" /></a></div> 22<div id="path"> 23<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> 24<div id="page-content"> 25<div id="preamble"><h1>Apache Module mod_proxy_ftp</h1> 26<div class="toplang"> 27<p><span>Available Languages: </span><a href="/en/mod/mod_proxy_ftp.html" title="English"> en </a> | 28<a href="/ja/mod/mod_proxy_ftp.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a></p> 29</div> 30<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>FTP support module for 31<code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code></td></tr> 32<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> 33<tr><th><a href="module-dict.html#ModuleIdentifier">Module�Identifier:</a></th><td>proxy_ftp_module</td></tr> 34<tr><th><a href="module-dict.html#SourceFile">Source�File:</a></th><td>mod_proxy_ftp.c</td></tr></table> 35<h3>Summary</h3> 36 37 <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 38 FTP sites. Note that FTP support is currently limited to 39 the GET method.</p> 40 41 <p>Thus, in order to get the ability of handling FTP proxy requests, 42 <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> 43 have to be present in the server.</p> 44 45 <div class="warning"><h3>Warning</h3> 46 <p>Do not enable proxying until you have <a href="mod_proxy.html#access">secured your server</a>. Open proxy 47 servers are dangerous both to your network and to the Internet at 48 large.</p> 49 </div> 50</div> 51<div id="quickview"><h3 class="directives">Directives</h3> 52<p>This module provides no 53 directives.</p> 54<h3>Topics</h3> 55<ul id="topics"> 56<li><img alt="" src="/images/down.gif" /> <a href="#mimetypes">Why doesn't file type <var>xxx</var> 57 download via FTP?</a></li> 58<li><img alt="" src="/images/down.gif" /> <a href="#type">How can I force an FTP ASCII download of 59 File <var>xxx</var>?</a></li> 60<li><img alt="" src="/images/down.gif" /> <a href="#ftpnonget">How can I do FTP upload?</a></li> 61<li><img alt="" src="/images/down.gif" /> <a href="#percent2fhck">How can I access FTP files outside 62 of my home directory?</a></li> 63<li><img alt="" src="/images/down.gif" /> <a href="#ftppass">How can I hide the FTP cleartext password 64 in my browser's URL line?</a></li> 65</ul><h3>See also</h3> 66<ul class="seealso"> 67<li><code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code></li> 68</ul><ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div> 69<div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 70<div class="section"> 71<h2><a name="mimetypes" id="mimetypes">Why doesn't file type <var>xxx</var> 72 download via FTP?</a></h2> 73 <p>You probably don't have that particular file type defined as 74 <code>application/octet-stream</code> in your proxy's mime.types 75 configuration file. A useful line can be</p> 76 77 <div class="example"><pre>application/octet-stream bin dms lha lzh exe class tgz taz</pre></div> 78 <p>Alternatively you may prefer to default everything to binary:</p> 79 <div class="example"><pre>DefaultType application/octet-stream</pre></div> 80 </div><div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 81<div class="section"> 82<h2><a name="type" id="type">How can I force an FTP ASCII download of 83 File <var>xxx</var>?</a></h2> 84 <p>In the rare situation where you must download a specific file using the 85 FTP <code>ASCII</code> transfer method (while the default transfer is in 86 <code>binary</code> mode), you can override <code class="module"><a href="/mod/mod_proxy.html">mod_proxy</a></code>'s 87 default by suffixing the request with <code>;type=a</code> to force an 88 ASCII transfer. (FTP Directory listings are always executed in ASCII mode, 89 however.)</p> 90 </div><div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 91<div class="section"> 92<h2><a name="ftpnonget" id="ftpnonget">How can I do FTP upload?</a></h2> 93 <p>Currently, only GET is supported for FTP in mod_proxy. You can 94 of course use HTTP upload (POST or PUT) through an Apache proxy.</p> 95 </div><div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 96<div class="section"> 97<h2><a name="percent2fhck" id="percent2fhck">How can I access FTP files outside 98 of my home directory?</a></h2> 99 <p>An FTP URI is interpreted relative to the home directory of the user 100 who is logging in. Alas, to reach higher directory levels you cannot 101 use /../, as the dots are interpreted by the browser and not actually 102 sent to the FTP server. To address this problem, the so called <dfn>Squid 103 %2f hack</dfn> was implemented in the Apache FTP proxy; it is a 104 solution which is also used by other popular proxy servers like the <a href="http://www.squid-cache.org/">Squid Proxy Cache</a>. By 105 prepending <code>/%2f</code> to the path of your request, you can make 106 such a proxy change the FTP starting directory to <code>/</code> (instead 107 of the home directory). For example, to retrieve the file 108 <code>/etc/motd</code>, you would use the URL:</p> 109 110 <div class="example"><p><code> 111 ftp://<var>user</var>@<var>host</var>/%2f/etc/motd 112 </code></p></div> 113 </div><div class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div> 114<div class="section"> 115<h2><a name="ftppass" id="ftppass">How can I hide the FTP cleartext password 116 in my browser's URL line?</a></h2> 117 <p>To log in to an FTP server by username and password, Apache uses 118 different strategies. In absense of a user name and password in the URL 119 altogether, Apache sends an anonymous login to the FTP server, 120 <em>i.e.</em>,</p> 121 122 <div class="example"><p><code> 123 user: anonymous<br /> 124 password: apache_proxy@ 125 </code></p></div> 126 127 <p>This works for all popular FTP servers which are configured for 128 anonymous access.</p> 129 130 <p>For a personal login with a specific username, you can embed the user 131 name into the URL, like in:</p> 132 133 <div class="example"><p><code> 134 ftp://<var>username</var>@<var>host</var>/myfile 135 </code></p></div> 136 137 <p>If the FTP server asks for a password when given this username (which 138 it should), then Apache will reply with a <code>401</code> (Authorization 139 required) response, which causes the Browser to pop up the 140 username/password dialog. Upon entering the password, the connection 141 attempt is retried, and if successful, the requested resource is 142 presented. The advantage of this procedure is that your browser does not 143 display the password in cleartext (which it would if you had used</p> 144 145 <div class="example"><p><code> 146 ftp://<var>username</var>:<var>password</var>@<var>host</var>/myfile 147 </code></p></div> 148 149 <p>in the first place).</p> 150 151 <div class="note"><h3>Note</h3> 152 <p>The password which is transmitted in such a way is not encrypted on 153 its way. It travels between your browser and the Apache proxy server in 154 a base64-encoded cleartext string, and between the Apache proxy and the 155 FTP server as plaintext. You should therefore think twice before 156 accessing your FTP server via HTTP (or before accessing your personal 157 files via FTP at all!) When using insecure channels, an eavesdropper 158 might intercept your password on its way.</p> 159 </div> 160 </div> 161</div> 162<div class="bottomlang"> 163<p><span>Available Languages: </span><a href="/en/mod/mod_proxy_ftp.html" title="English"> en </a> | 164<a href="/ja/mod/mod_proxy_ftp.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a></p> 165</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. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. 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