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			281 lines
		
	
	
		
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<?xml version="1.0" encoding="UTF-8"?>
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<title>mod_authn_core - Apache HTTP Server Version 2.5</title>
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<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
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<link href="../images/favicon.ico" rel="shortcut icon" /></head>
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<body>
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<div id="page-header">
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<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/quickreference.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>
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<p class="apache">Apache HTTP Server Version 2.5</p>
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<img alt="" src="../images/feather.png" /></div>
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<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
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<div id="path">
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<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 2.5</a> > <a href="./">Modules</a></div>
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<div id="page-content">
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<div id="preamble"><h1>Apache Module mod_authn_core</h1>
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<div class="toplang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_authn_core.html" title="English"> en </a> |
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<a href="../fr/mod/mod_authn_core.html" hreflang="fr" rel="alternate" title="Français"> fr </a></p>
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</div>
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<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Core Authentication</td></tr>
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<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Base</td></tr>
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<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>authn_core_module</td></tr>
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<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_authn_core.c</td></tr>
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<tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.3 and later</td></tr></table>
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<h3>Summary</h3>
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    <p>This module provides core authentication capabilities to
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    allow or deny access to portions of the web site.
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    <code class="module"><a href="../mod/mod_authn_core.html">mod_authn_core</a></code> provides directives that are
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    common to all authentication providers.</p>
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</div>
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<div id="quickview"><h3>Topics</h3>
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<ul id="topics">
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<li><img alt="" src="../images/down.gif" /> <a href="#authnalias">Creating Authentication Provider Aliases</a></li>
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</ul><h3 class="directives">Directives</h3>
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<ul id="toc">
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<li><img alt="" src="../images/down.gif" /> <a href="#authname">AuthName</a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authnprovideralias"><AuthnProviderAlias></a></li>
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<li><img alt="" src="../images/down.gif" /> <a href="#authtype">AuthType</a></li>
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</ul>
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<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_authn_core">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_authn_core">Report a bug</a></li></ul><h3>See also</h3>
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<ul class="seealso">
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<li><a href="#comments_section">Comments</a></li></ul></div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="section">
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<h2><a name="authnalias" id="authnalias">Creating Authentication Provider Aliases</a> <a title="Permanent link" href="#authnalias" class="permalink">¶</a></h2>
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    <p>Extended authentication providers can be created
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    within the configuration file and assigned an alias name.  The alias
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    providers can then be referenced through the directives
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    <code class="directive"><a href="../mod/mod_auth_basic.html#authbasicprovider">AuthBasicProvider</a></code> or
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    <code class="directive"><a href="../mod/mod_auth_digest.html#authdigestprovider">AuthDigestProvider</a></code> in
 | 
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    the same way as a base authentication provider.  Besides the ability
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    to create and alias an extended provider, it also allows the same
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    extended authentication provider to be reference by multiple
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    locations.</p>
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    <h3><a name="example" id="example">Examples</a></h3>
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        <p>This example checks for passwords in two different text
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        files.</p>
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        <div class="example"><h3>Checking multiple text password files</h3><pre class="prettyprint lang-config"># Check here first
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<AuthnProviderAlias file file1>
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    AuthUserFile "/www/conf/passwords1"
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</AuthnProviderAlias>
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# Then check here
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<AuthnProviderAlias file file2>
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    AuthUserFile "/www/conf/passwords2"
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</AuthnProviderAlias>
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<Directory "/var/web/pages/secure">
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    AuthBasicProvider file1 file2
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    AuthType Basic
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    AuthName "Protected Area"
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    Require valid-user
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</Directory></pre>
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</div>
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        <p>The example below creates two different ldap authentication
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        provider aliases based on the ldap provider.  This allows
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        a single authenticated location to be serviced by multiple ldap
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        hosts:</p>
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        <div class="example"><h3>Checking multiple LDAP servers</h3><pre class="prettyprint lang-config"><AuthnProviderAlias ldap ldap-alias1>
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    AuthLDAPBindDN "cn=youruser,o=ctx"
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    AuthLDAPBindPassword yourpassword
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    AuthLDAPURL "ldap://ldap.host/o=ctx"
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</AuthnProviderAlias>
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<AuthnProviderAlias ldap ldap-other-alias>
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    AuthLDAPBindDN "cn=yourotheruser,o=dev"
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    AuthLDAPBindPassword yourotherpassword
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    AuthLDAPURL "ldap://other.ldap.host/o=dev?cn"
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</AuthnProviderAlias>
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Alias "/secure" "/webpages/secure"
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<Directory "/webpages/secure">
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    AuthBasicProvider ldap-other-alias  ldap-alias1
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    AuthType Basic
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    AuthName "LDAP Protected Place"
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    Require valid-user
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    # Note that Require ldap-* would not work here, since the
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    # AuthnProviderAlias does not provide the config to authorization providers
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    # that are implemented in the same module as the authentication provider.
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</Directory></pre>
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</div>
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</div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="directive-section"><h2><a name="AuthName" id="AuthName">AuthName</a> <a name="authname" id="authname">Directive</a> <a title="Permanent link" href="#authname" class="permalink">¶</a></h2>
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<table class="directive">
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						||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Authorization realm for use in HTTP
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authentication</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthName <var>auth-domain</var></code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
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<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authn_core</td></tr>
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</table>
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    <p>This directive sets the name of the authorization realm for a
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    directory. This realm is given to the client so that the user
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    knows which username and password to send.
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    <code class="directive">AuthName</code> takes a single argument; if the
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    realm name contains spaces, it must be enclosed in quotation
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    marks.  It must be accompanied by <code class="directive"><a href="#authtype">AuthType</a></code> and <code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code> directives, and directives such
 | 
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    as <code class="directive"><a href="../mod/mod_authn_file.html#authuserfile">AuthUserFile</a></code> and
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    <code class="directive"><a href="../mod/mod_authz_groupfile.html#authgroupfile">AuthGroupFile</a></code> to
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    work.</p>
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   <p>For example:</p>
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   <pre class="prettyprint lang-config">AuthName "Top Secret"</pre>
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    <p>The string provided for the <code>AuthName</code> is what will
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    appear in the password dialog provided by most browsers.</p>
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						||
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    <p>From 2.5.0, <a href="../expr.html">expression syntax</a> can be
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    used inside the directive to produce the name dynamically.</p>
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   <p>For example:</p>
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   <pre class="prettyprint lang-config">AuthName "%{HTTP_HOST}"</pre>
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<h3>See also</h3>
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<ul>
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<li><a href="../howto/auth.html">Authentication, Authorization, and
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						||
    Access Control</a></li>
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<li><code class="module"><a href="../mod/mod_authz_core.html">mod_authz_core</a></code></li>
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						||
</ul>
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</div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="directive-section"><h2><a name="AuthnProviderAlias" id="AuthnProviderAlias"><AuthnProviderAlias></a> <a name="authnprovideralias" id="authnprovideralias">Directive</a> <a title="Permanent link" href="#authnprovideralias" class="permalink">¶</a></h2>
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<table class="directive">
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						||
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enclose a group of directives that represent an
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extension of a base authentication provider and referenced by
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the specified alias</td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code><AuthnProviderAlias <var>baseProvider Alias</var>>
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... </AuthnProviderAlias></code></td></tr>
 | 
						||
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config</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_authn_core</td></tr>
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</table>
 | 
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    <p><code><AuthnProviderAlias></code> and
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    <code></AuthnProviderAlias></code> are used to enclose a group of
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    authentication directives that can be referenced by the alias name
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    using one of the directives <code class="directive"><a href="../mod/mod_auth_basic.html#authbasicprovider">
 | 
						||
    AuthBasicProvider</a></code> or <code class="directive"><a href="../mod/mod_auth_digest.html#authdigestprovider">
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    AuthDigestProvider</a></code>.</p>
 | 
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    <div class="note">This directive has no affect on authorization, even for modules that
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    provide both authentication and authorization.</div>
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</div>
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<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
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<div class="directive-section"><h2><a name="AuthType" id="AuthType">AuthType</a> <a name="authtype" id="authtype">Directive</a> <a title="Permanent link" href="#authtype" class="permalink">¶</a></h2>
 | 
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<table class="directive">
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<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Type of user authentication</td></tr>
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<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>AuthType None|Basic|Digest|Form</code></td></tr>
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<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
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<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>AuthConfig</td></tr>
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<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Base</td></tr>
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<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_authn_core</td></tr>
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</table>
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    <p>This directive selects the type of user authentication for a
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    directory. The authentication types available are <code>None</code>,
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    <code>Basic</code> (implemented by
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    <code class="module"><a href="../mod/mod_auth_basic.html">mod_auth_basic</a></code>), <code>Digest</code>
 | 
						||
    (implemented by <code class="module"><a href="../mod/mod_auth_digest.html">mod_auth_digest</a></code>), and
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    <code>Form</code> (implemented by <code class="module"><a href="../mod/mod_auth_form.html">mod_auth_form</a></code>).</p>
 | 
						||
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    <p>To implement authentication, you must also use the <code class="directive"><a href="#authname">AuthName</a></code> and <code class="directive"><a href="../mod/mod_authz_core.html#require">Require</a></code> directives.  In addition, the
 | 
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    server must have an authentication-provider module such as
 | 
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    <code class="module"><a href="../mod/mod_authn_file.html">mod_authn_file</a></code> and an authorization module such
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    as <code class="module"><a href="../mod/mod_authz_user.html">mod_authz_user</a></code>.</p>
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						||
    <p>The authentication type <code>None</code> disables authentication.
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						||
    When authentication is enabled, it is normally inherited by each
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						||
    subsequent <a href="../sections.html#mergin">configuration section</a>,
 | 
						||
    unless a different authentication type is specified.  If no
 | 
						||
    authentication is desired for a subsection of an authenticated
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    section, the authentication type <code>None</code> may be used;
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						||
    in the following example, clients may access the
 | 
						||
    <code>/www/docs/public</code> directory without authenticating:</p>
 | 
						||
 | 
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    <pre class="prettyprint lang-config"><Directory "/www/docs">
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    AuthType Basic
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    AuthName Documents
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    AuthBasicProvider file
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    AuthUserFile "/usr/local/apache/passwd/passwords"
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    Require valid-user
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</Directory>
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<Directory "/www/docs/public">
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    AuthType None
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    Require all granted
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</Directory></pre>
 | 
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 | 
						||
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						||
    <p>From 2.5.0, <a href="../expr.html">expression syntax</a> can be
 | 
						||
    used inside the directive to specify the type dynamically.</p>
 | 
						||
 | 
						||
    <div class="note">When disabling authentication, note that clients which have
 | 
						||
    already authenticated against another portion of the server's document
 | 
						||
    tree will typically continue to send authentication HTTP headers
 | 
						||
    or cookies with each request, regardless of whether the server
 | 
						||
    actually requires authentication for every resource.</div>
 | 
						||
 | 
						||
<h3>See also</h3>
 | 
						||
<ul>
 | 
						||
<li><a href="../howto/auth.html">Authentication, Authorization,
 | 
						||
    and Access Control</a></li>
 | 
						||
</ul>
 | 
						||
</div>
 | 
						||
</div>
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<div class="bottomlang">
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<p><span>Available Languages: </span><a href="../en/mod/mod_authn_core.html" title="English"> en </a> |
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<a href="../fr/mod/mod_authn_core.html" hreflang="fr" rel="alternate" title="Français"> fr </a></p>
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						||
</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 Freenode, or sent to our <a href="https://httpd.apache.org/lists.html">mailing lists</a>.</div>
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