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278 lines
10 KiB
HTML
278 lines
10 KiB
HTML
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<meta name="generator" content="HTML Tidy, see www.w3.org" />
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<title>Apache module mod_auth_anon.c</title>
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<!--#include virtual="header.html" -->
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<h1 align="CENTER">Module mod_auth_anon</h1>
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This module allows "anonymous" user access to authenticated
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areas.
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<p><a href="module-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Extension<br />
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<a href="module-dict.html#SourceFile"
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rel="Help"><strong>Source File:</strong></a>
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mod_auth_anon.c<br />
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<a href="module-dict.html#ModuleIdentifier"
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rel="Help"><strong>Module Identifier:</strong></a>
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anon_auth_module</p>
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<h2>Summary</h2>
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<p>This module does access control in a manner similar to
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anonymous-ftp sites; <em>i.e.</em> have a 'magic' user id
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'anonymous' and the email address as a password. These email
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addresses can be logged.</p>
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<p>Combined with other (database) access control methods, this
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allows for effective user tracking and customization according
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to a user profile while still keeping the site open for
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'unregistered' users. One advantage of using Auth-based user
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tracking is that, unlike magic-cookies and funny URL
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pre/postfixes, it is completely browser independent and it
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allows users to share URLs.</p>
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<h2><a id="Directives" name="Directives">Directives</a></h2>
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<ul>
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<li><a href="#anonymous">Anonymous</a></li>
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<li><a href="#Authoritative">Anonymous_Authoritative</a></li>
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<li><a href="#LogEmail">Anonymous_LogEmail</a></li>
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<li><a href="#MustGiveEmail">Anonymous_MustGiveEmail</a></li>
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<li><a href="#NoUserID">Anonymous_NoUserID</a></li>
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<li><a href="#VerifyEmail">Anonymous_VerifyEmail</a></li>
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</ul>
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<h2><a id="Example" name="Example">Example</a></h2>
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The example below (when combined with the Auth directives of a
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htpasswd-file based (or GDM, mSQL <em>etc.</em>) base access
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control system allows users in as 'guests' with the following
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properties:
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<ul>
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<li>It insists that the user enters a userId.
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(<code>Anonymous_NoUserId</code>)</li>
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<li>It insists that the user enters a password.
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(<code>Anonymous_MustGiveEmail</code>)</li>
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<li>The password entered must be a valid email address, ie.
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contain at least one '@' and a '.'.
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(<code>Anonymous_VerifyEmail</code>)</li>
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<li>The userID must be one of <code>anonymous guest www test
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welcome</code> and comparison is <strong>not</strong> case
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sensitive.</li>
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<li>And the Email addresses entered in the passwd field are
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logged to the error log file
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(<code>Anonymous_LogEmail</code>)</li>
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</ul>
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<p>Excerpt of access.conf:</p>
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<blockquote>
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<code>Anonymous_NoUserId off<br />
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Anonymous_MustGiveEmail on<br />
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Anonymous_VerifyEmail on<br />
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Anonymous_LogEmail on<br />
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Anonymous anonymous guest www test welcome</code>
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<p><code>AuthName "Use 'anonymous' & Email address for
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guest entry"<br />
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AuthType basic</code></p>
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<p><code># An
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AuthUserFile/AuthDBUserFile/AuthDBMUserFile<br />
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# directive must be specified, or use<br />
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# Anonymous_Authoritative for public access.<br />
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# In the .htaccess for the public directory, add:<br />
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<Files *><br />
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Order Deny,Allow<br />
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Allow from all<br />
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</code></p>
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<p><code>Require valid-user<br />
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</Files><br />
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</code></p>
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</blockquote>
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<hr />
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<h2><a id="anonymous" name="anonymous">Anonymous
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directive</a></h2>
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<!--%plaintext <?INDEX {\tt Anonymous} directive> -->
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<a href="directive-dict.html#Syntax"
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rel="Help"><strong>Syntax:</strong></a> Anonymous <em>user</em>
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[<em>user</em>] ...<br />
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<a href="directive-dict.html#Default"
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rel="Help"><strong>Default:</strong></a> none<br />
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<a href="directive-dict.html#Context"
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rel="Help"><strong>Context:</strong></a> directory,
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.htaccess<br />
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<a href="directive-dict.html#Override"
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rel="Help"><strong>Override:</strong></a> AuthConfig<br />
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<a href="directive-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Extension<br />
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<a href="directive-dict.html#Module"
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rel="Help"><strong>Module:</strong></a> mod_auth_anon
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<p>A list of one or more 'magic' userIDs which are allowed
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access without password verification. The userIDs are space
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separated. It is possible to use the ' and " quotes to allow a
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space in a userID as well as the \ escape character.</p>
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<p>Please note that the comparison is
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<strong>case-IN-sensitive</strong>.<br />
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I strongly suggest that the magic username
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'<code>anonymous</code>' is always one of the allowed
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userIDs.</p>
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<p>Example:<br />
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<code>Anonymous anonymous "Not Registered" 'I don\'t
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know'</code></p>
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<p>This would allow the user to enter without password
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verification by using the userId's 'anonymous',
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'AnonyMous','Not Registered' and 'I Don't Know'.</p>
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<hr />
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<h2><a id="Authoritative"
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name="Authoritative">Anonymous_Authoritative directive</a></h2>
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<a href="directive-dict.html#Syntax"
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rel="Help"><strong>Syntax:</strong></a> Anonymous_Authoritative
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on|off<br />
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<a href="directive-dict.html#Default"
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rel="Help"><strong>Default:</strong></a>
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<code>Anonymous_Authoritative off</code><br />
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<a href="directive-dict.html#Context"
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rel="Help"><strong>Context:</strong></a> directory,
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.htaccess<br />
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<a href="directive-dict.html#Override"
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rel="Help"><strong>Override:</strong></a> AuthConfig<br />
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<a href="directive-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Extension<br />
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<a href="directive-dict.html#Module"
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rel="Help"><strong>Module:</strong></a> mod_auth_anon
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<p>When set 'on', there is no fall-through to other
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authorization methods. So if a userID does not match the values
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specified in the <code>Anonymous</code> directive, access is
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denied.</p>
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<p>Be sure you know what you are doing when you decide to
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switch it on. And remember that it is the linking order of the
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modules (in the Configuration / Make file) which details the
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order in which the Authorization modules are queried.</p>
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<hr />
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<h2><a id="LogEmail" name="LogEmail">Anonymous_LogEmail
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directive</a></h2>
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<a href="directive-dict.html#Syntax"
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rel="Help"><strong>Syntax:</strong></a> Anonymous_LogEmail
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on|off<br />
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<a href="directive-dict.html#Default"
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rel="Help"><strong>Default:</strong></a>
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<code>Anonymous_LogEmail on</code><br />
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<a href="directive-dict.html#Context"
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rel="Help"><strong>Context:</strong></a> directory,
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.htaccess<br />
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<a href="directive-dict.html#Override"
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rel="Help"><strong>Override:</strong></a> AuthConfig<br />
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<a href="directive-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Extension<br />
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<a href="directive-dict.html#Module"
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rel="Help"><strong>Module:</strong></a> mod_auth_anon
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<p>When set 'on', the default, the 'password' entered (which
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hopefully contains a sensible email address) is logged in the
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error log.</p>
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<hr />
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<h2><a id="MustGiveEmail"
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name="MustGiveEmail">Anonymous_MustGiveEmail directive</a></h2>
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<!--%plaintext <?INDEX {\tt Anonymous_MustGiveEmail} directive> -->
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<a href="directive-dict.html#Syntax"
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rel="Help"><strong>Syntax:</strong></a> Anonymous_MustGiveEmail
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on|off<br />
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<a href="directive-dict.html#Default"
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rel="Help"><strong>Default:</strong></a>
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<code>Anonymous_MustGiveEmail on</code><br />
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<a href="directive-dict.html#Context"
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rel="Help"><strong>Context:</strong></a> directory,
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.htaccess<br />
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<a href="directive-dict.html#Override"
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rel="Help"><strong>Override:</strong></a> AuthConfig<br />
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<a href="directive-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Extension<br />
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<a href="directive-dict.html#Module"
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rel="Help"><strong>Module:</strong></a> mod_auth_anon
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<p>Specifies whether the user must specify an email address as
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the password. This prohibits blank passwords.</p>
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<hr />
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<h2><a id="NoUserID" name="NoUserID">Anonymous_NoUserID
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directive</a></h2>
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<a href="directive-dict.html#Syntax"
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rel="Help"><strong>Syntax:</strong></a> Anonymous_NoUserID
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on|off<br />
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<a href="directive-dict.html#Default"
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rel="Help"><strong>Default:</strong></a>
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<code>Anonymous_NoUserID off</code><br />
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<a href="directive-dict.html#Context"
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rel="Help"><strong>Context:</strong></a> directory,
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.htaccess<br />
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<a href="directive-dict.html#Override"
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rel="Help"><strong>Override:</strong></a> AuthConfig<br />
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<a href="directive-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Extension<br />
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<a href="directive-dict.html#Module"
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rel="Help"><strong>Module:</strong></a> mod_auth_anon
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<p>When set 'on', users can leave the userID (and perhaps the
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password field) empty. This can be very convenient for
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MS-Explorer users who can just hit return or click directly on
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the OK button; which seems a natural reaction.</p>
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<hr />
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<h2><a id="VerifyEmail"
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name="VerifyEmail">Anonymous_VerifyEmail directive</a></h2>
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<a href="directive-dict.html#Syntax"
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rel="Help"><strong>Syntax:</strong></a> Anonymous_VerifyEmail
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on|off<br />
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<a href="directive-dict.html#Default"
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rel="Help"><strong>Default:</strong></a>
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<code>Anonymous_VerifyEmail off</code><br />
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<a href="directive-dict.html#Context"
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rel="Help"><strong>Context:</strong></a> directory,
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.htaccess<br />
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<a href="directive-dict.html#Override"
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rel="Help"><strong>Override:</strong></a> AuthConfig<br />
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<a href="directive-dict.html#Status"
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rel="Help"><strong>Status:</strong></a> Extension<br />
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<a href="directive-dict.html#Module"
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rel="Help"><strong>Module:</strong></a> mod_auth_anon
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<p>When set 'on' the 'password' entered is checked for at least
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one '@' and a '.' to encourage users to enter valid email
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addresses (see the above <code>Auth_LogEmail</code>).
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<!--#include virtual="footer.html" -->
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</p>
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</body>
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</html>
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