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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:01:30 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:01:30 +0000 |
| commit | 6beeb1b708550be0d4a53b272283e17e5e35fe17 (patch) | |
| tree | 1ce8673d4aaa948e5554000101f46536a1e4cc29 /docs/manual/mod/mod_auth_basic.html.en | |
| parent | Initial commit. (diff) | |
| download | apache2-upstream/2.4.57.tar.xz apache2-upstream/2.4.57.zip | |
Adding upstream version 2.4.57.upstream/2.4.57
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'docs/manual/mod/mod_auth_basic.html.en')
| -rw-r--r-- | docs/manual/mod/mod_auth_basic.html.en | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/docs/manual/mod/mod_auth_basic.html.en b/docs/manual/mod/mod_auth_basic.html.en new file mode 100644 index 0000000..bdb3db4 --- /dev/null +++ b/docs/manual/mod/mod_auth_basic.html.en @@ -0,0 +1,288 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!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> +<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" /> +<!-- + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + This file is generated from xml source: DO NOT EDIT + XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX + --> +<title>mod_auth_basic - Apache HTTP Server Version 2.4</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 rel="stylesheet" type="text/css" href="../style/css/prettify.css" /> +<script src="../style/scripts/prettify.min.js" type="text/javascript"> +</script> + +<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="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p> +<p class="apache">Apache HTTP Server Version 2.4</p> +<img alt="" src="../images/feather.png" /></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 2.4</a> > <a href="./">Modules</a></div> +<div id="page-content"> +<div id="preamble"><h1>Apache Module mod_auth_basic</h1> +<div class="toplang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_auth_basic.html" title="English"> en </a> | +<a href="../fr/mod/mod_auth_basic.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="../ja/mod/mod_auth_basic.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | +<a href="../ko/mod/mod_auth_basic.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> +</div> +<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Basic HTTP authentication</td></tr> +<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>auth_basic_module</td></tr> +<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_auth_basic.c</td></tr> +<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.1 and later</td></tr></table> +<h3>Summary</h3> + + <p>This module allows the use of HTTP Basic Authentication to + restrict access by looking up users in the given providers. + HTTP Digest Authentication is provided by + <code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code>. This module should + usually be combined with at least one authentication module + such as <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code> and one authorization + module such as <code class="module"><a href="../mod/mod_authz_user.html">mod_authz_user</a></code>.</p> +</div> +<div id="quickview"><a href="https://www.apache.org/foundation/contributing.html" class="badge"><img src="https://www.apache.org/images/SupportApache-small.png" alt="Support Apache!" /></a><h3 class="directives">Directives</h3> +<ul id="toc"> +<li><img alt="" src="../images/down.gif" /> <a href="#authbasicauthoritative">AuthBasicAuthoritative</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#authbasicfake">AuthBasicFake</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#authbasicprovider">AuthBasicProvider</a></li> +<li><img alt="" src="../images/down.gif" /> <a href="#authbasicusedigestalgorithm">AuthBasicUseDigestAlgorithm</a></li> +</ul> +<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_auth_basic">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_auth_basic">Report a bug</a></li></ul><h3>See also</h3> +<ul class="seealso"> +<li><code class="directive"><a href="../mod/mod_authn_core.html#authname">AuthName</a></code></li> +<li><code class="directive"><a href="../mod/mod_authn_core.html#authtype">AuthType</a></code></li> +<li><code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code></li> +<li><a href="../howto/auth.html">Authentication howto</a></li> +<li><a href="#comments_section">Comments</a></li></ul></div> + +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="AuthBasicAuthoritative" id="AuthBasicAuthoritative">AuthBasicAuthoritative</a> <a name="authbasicauthoritative" id="authbasicauthoritative">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets whether authorization and authentication are passed to +lower level modules</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthBasicAuthoritative On|Off</code></td></tr> +<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthBasicAuthoritative On</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> +<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr> +<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_basic</td></tr> +</table> + <p>Normally, each authorization module listed in <code class="directive"><a href="#authbasicprovider">AuthBasicProvider</a></code> will attempt + to verify the user, and if the user is not found in any provider, + access will be denied. Setting the + <code class="directive">AuthBasicAuthoritative</code> directive explicitly + to <code>Off</code> allows for both authentication and + authorization to be passed on to other non-provider-based modules + if there is <strong>no userID</strong> or <strong>rule</strong> + matching the supplied userID. This should only be necessary when + combining <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code> with third-party modules + that are not configured with the <code class="directive"><a href="#authbasicprovider">AuthBasicProvider</a></code> + directive. When using such modules, the order of processing + is determined in the modules' source code and is not configurable.</p> + +</div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="AuthBasicFake" id="AuthBasicFake">AuthBasicFake</a> <a name="authbasicfake" id="authbasicfake">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Fake basic authentication using the given expressions for +username and password</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthBasicFake off|<var>username</var> [<var>password</var>]</code></td></tr> +<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>none</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> +<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr> +<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_basic</td></tr> +<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Apache HTTP Server 2.4.5 and later</td></tr> +</table> + <p>The username and password specified are combined into an + Authorization header, which is passed to the server or service + behind the webserver. Both the username and password fields are + interpreted using the <a href="../expr.html">expression parser</a>, + which allows both the username and password to be set based on + request parameters.</p> + + <p>If the password is not specified, the default value "password" + will be used. To disable fake basic authentication for an URL + space, specify "AuthBasicFake off".</p> + + <p>In this example, we pass a fixed username and password to a + backend server.</p> + + <div class="example"><h3>Fixed Example</h3><pre class="prettyprint lang-config"><Location "/demo"> + AuthBasicFake demo demopass +</Location></pre> +</div> + + <p>In this example, we pass the email address extracted from a client + certificate, extending the functionality of the FakeBasicAuth option + within the <code class="directive"><a href="../mod/mod_ssl.html#ssloptions">SSLOptions</a></code> + directive. Like the FakeBasicAuth option, the password is set to the + fixed string "password".</p> + + <div class="example"><h3>Certificate Example</h3><pre class="prettyprint lang-config"><Location "/secure"> + AuthBasicFake "%{SSL_CLIENT_S_DN_Email}" +</Location></pre> +</div> + + <p>Extending the above example, we generate a password by hashing the + email address with a fixed passphrase, and passing the hash to the + backend server. This can be used to gate into legacy systems that do + not support client certificates.</p> + + <div class="example"><h3>Password Example</h3><pre class="prettyprint lang-config"><Location "/secure"> + AuthBasicFake "%{SSL_CLIENT_S_DN_Email}" "%{sha1:passphrase-%{SSL_CLIENT_S_DN_Email}}" +</Location></pre> +</div> + + <div class="example"><h3>Exclusion Example</h3><pre class="prettyprint lang-config"><Location "/public"> + AuthBasicFake off +</Location></pre> +</div> + + +</div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="AuthBasicProvider" id="AuthBasicProvider">AuthBasicProvider</a> <a name="authbasicprovider" id="authbasicprovider">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Sets the authentication provider(s) for this location</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthBasicProvider <var>provider-name</var> +[<var>provider-name</var>] ...</code></td></tr> +<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthBasicProvider file</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> +<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr> +<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_basic</td></tr> +</table> + <p>The <code class="directive">AuthBasicProvider</code> directive sets + which provider is used to authenticate the users for this location. + The default <code>file</code> provider is implemented + by the <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code> module. Make sure + that the chosen provider module is present in the server.</p> + <div class="example"><h3>Example</h3><pre class="prettyprint lang-config"><Location "/secure"> + AuthType basic + AuthName "private area" + AuthBasicProvider dbm + AuthDBMType SDBM + AuthDBMUserFile "/www/etc/dbmpasswd" + Require valid-user +</Location></pre> +</div> + <p> Providers are queried in order until a provider finds a match + for the requested username, at which point this sole provider will + attempt to check the password. A failure to verify the password does + not result in control being passed on to subsequent providers.</p> + + <p>Providers are implemented by <code class="module"><a href="../mod/mod_authn_dbm.html">mod_authn_dbm</a></code>, + <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code>, <code class="module"><a href="../mod/mod_authn_dbd.html">mod_authn_dbd</a></code>, + <code class="module"><a href="../mod/mod_authnz_ldap.html">mod_authnz_ldap</a></code> and <code class="module"><a href="../mod/mod_authn_socache.html">mod_authn_socache</a></code>.</p> + +</div> +<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> +<div class="directive-section"><h2><a name="AuthBasicUseDigestAlgorithm" id="AuthBasicUseDigestAlgorithm">AuthBasicUseDigestAlgorithm</a> <a name="authbasicusedigestalgorithm" id="authbasicusedigestalgorithm">Directive</a></h2> +<table class="directive"> +<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Check passwords against the authentication providers as if +Digest Authentication was in force instead of Basic Authentication. +</td></tr> +<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthBasicUseDigestAlgorithm MD5|Off</code></td></tr> +<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>AuthBasicUseDigestAlgorithm Off</code></td></tr> +<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> +<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr> +<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr> +<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_auth_basic</td></tr> +<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Apache HTTP Server 2.4.7 and later</td></tr> +</table> + <p>Normally, when using Basic Authentication, the providers listed in + <code class="directive"><a href="#authbasicprovider">AuthBasicProvider</a></code> + attempt to verify a user by checking their data stores for + a matching username and associated password. The stored passwords + are usually encrypted, but not necessarily so; each provider may + choose its own storage scheme for passwords.</p> + + <p>When using <code class="directive"><a href="../mod/mod_auth_digest.html#authdigestprovider">AuthDigestProvider</a></code> and Digest + Authentication, providers perform a similar check to find a matching + username in their data stores. However, unlike in the Basic + Authentication case, the value associated with each stored username + must be an encrypted string composed from the username, realm name, + and password. (See + <a href="http://tools.ietf.org/html/rfc2617#section-3.2.2.2"> + RFC 2617, Section 3.2.2.2</a> for more details on the format used + for this encrypted string.)</p> + + <p>As a consequence of the difference in the stored values between + Basic and Digest Authentication, converting from Digest + Authentication to Basic Authentication generally requires that all + users be assigned new passwords, as their existing passwords cannot + be recovered from the password storage scheme imposed on those + providers which support Digest Authentication.</p> + + <p>Setting the <code class="directive">AuthBasicUseDigestAlgorithm</code> directive + to <code>MD5</code> will cause the user's Basic Authentication password + to be checked using the same encrypted format as for Digest + Authentication. First a string composed from the username, realm name, + and password is hashed with MD5; then the username and this encrypted + string are passed to the providers listed in + <code class="directive"><a href="#authbasicprovider">AuthBasicProvider</a></code> + as if + <code class="directive"><a href="../mod/mod_authn_core.html#authtype">AuthType</a></code> + was set to <code>Digest</code> and Digest Authentication was in force. + </p> + + <p>Through the use of <code class="directive">AuthBasicUseDigestAlgorithm</code> + a site may switch from Digest to Basic Authentication without + requiring users to be assigned new passwords.</p> + + <div class="note"> + The inverse process of switching from Basic to Digest + Authentication without assigning new passwords is generally + not possible. Only if the Basic Authentication passwords + have been stored in plain text or with a reversible encryption + scheme will it be possible to recover them and generate a + new data store following the Digest Authentication password + storage scheme. + </div> + + <div class="note"> + Only providers which support Digest Authentication will be able + to authenticate users when <code class="directive">AuthBasicUseDigestAlgorithm</code> + is set to <code>MD5</code>. Use of other providers will result + in an error response and the client will be denied access. + </div> + +</div> +</div> +<div class="bottomlang"> +<p><span>Available Languages: </span><a href="../en/mod/mod_auth_basic.html" title="English"> en </a> | +<a href="../fr/mod/mod_auth_basic.html" hreflang="fr" rel="alternate" title="Français"> fr </a> | +<a href="../ja/mod/mod_auth_basic.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | +<a href="../ko/mod/mod_auth_basic.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> +</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 by our moderators if they are either implemented or considered invalid/off-topic. Questions on how to manage the Apache HTTP Server should be directed at either our IRC channel, #httpd, on Libera.chat, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div> +<script type="text/javascript"><!--//--><![CDATA[//><!-- +var comments_shortname = 'httpd'; +var comments_identifier = 'http://httpd.apache.org/docs/2.4/mod/mod_auth_basic.html'; +(function(w, d) { + if (w.location.hostname.toLowerCase() == "httpd.apache.org") { + d.write('<div id="comments_thread"><\/div>'); + var s = d.createElement('script'); + s.type = 'text/javascript'; + s.async = true; + s.src = 'https://comments.apache.org/show_comments.lua?site=' + comments_shortname + '&page=' + comments_identifier; + (d.getElementsByTagName('head')[0] || d.getElementsByTagName('body')[0]).appendChild(s); + } + else { + d.write('<div id="comments_thread">Comments are disabled for this page at the moment.<\/div>'); + } +})(window, document); +//--><!]]></script></div><div id="footer"> +<p class="apache">Copyright 2023 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="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p></div><script type="text/javascript"><!--//--><![CDATA[//><!-- +if (typeof(prettyPrint) !== 'undefined') { + prettyPrint(); +} +//--><!]]></script> +</body></html>
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