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   8 <title>mod_ident - Apache HTTP Server</title>
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  16 <p class="apache">Apache HTTP Server Version 2.3</p>
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  21 <div id="page-content">
  22 <div id="preamble"><h1>Apache Module mod_ident</h1>
  23 <div class="toplang">
  24 <p><span>Available Languages: </span><a href="../en/mod/mod_ident.html" title="English">&nbsp;en&nbsp;</a> |
  25 <a href="../ko/mod/mod_ident.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
  26 </div>
  27 <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>RFC 1413 ident lookups</td></tr>
  28 <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
  29 <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>ident_module</td></tr>
  30 <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_ident.c</td></tr>
  31 <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.1 and later</td></tr></table>
  32 <h3>Summary</h3>
  33
  34     <p>This module queries an <a href="http://www.ietf.org/rfc/rfc1413.txt">RFC 1413</a> compatible daemon on a remote host to look up the owner of
  35     a connection.</p>
  36 </div>
  37 <div id="quickview"><h3 class="directives">Directives</h3>
  38 <ul id="toc">
  39 <li><img alt="" src="../images/down.gif" /> <a href="#identitycheck">IdentityCheck</a></li>
  40 <li><img alt="" src="../images/down.gif" /> <a href="#identitychecktimeout">IdentityCheckTimeout</a></li>
  41 </ul>
  42 <h3>See also</h3>
  43 <ul class="seealso">
  44 <li><code class="module"><a href="../mod/mod_log_config.html">mod_log_config</a></code></li>
  45 </ul></div>
  46
  47 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
  48 <div class="directive-section"><h2><a name="IdentityCheck" id="IdentityCheck">IdentityCheck</a> <a name="identitycheck" id="identitycheck">Directive</a></h2>
  49 <table class="directive">
  50 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enables logging of the RFC 1413 identity of the remote
  51 user</td></tr>
  52 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>IdentityCheck On|Off</code></td></tr>
  53 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>IdentityCheck Off</code></td></tr>
  54 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory</td></tr>
  55 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
  56 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ident</td></tr>
  57 <tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Moved out of core in Apache 2.1</td></tr>
  58 </table>
  59     <p>This directive enables <a href="http://www.ietf.org/rfc/rfc1413.txt">RFC 1413</a>-compliant logging of the remote user name for each
  60     connection, where the client machine runs identd or something similar.
  61     This information is logged in the access log using the <code>%...l</code>
  62     <a href="mod_log_config.html#formats">format string</a>.</p>
  63
  64     <div class="note">
  65       The information should not be trusted in any way except for
  66       rudimentary usage tracking.
  67     </div>
  68
  69     <p>Note that this can cause serious latency problems accessing
  70     your server since every request requires one of these lookups
  71     to be performed. When firewalls or proxy servers are involved,
  72     each lookup might possibly fail and add a latency duration as
  73     defined by the <code class="directive"><a href="#identitychecktimeout">IdentityCheckTimeout</a></code> directive to each hit. So in
  74     general this is not very useful on public servers accessible from
  75     the Internet.</p>
  76
  77 </div>
  78 <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
  79 <div class="directive-section"><h2><a name="IdentityCheckTimeout" id="IdentityCheckTimeout">IdentityCheckTimeout</a> <a name="identitychecktimeout" id="identitychecktimeout">Directive</a></h2>
  80 <table class="directive">
  81 <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Determines the timeout duration for ident requests</td></tr>
  82 <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>IdentityCheckTimeout <var>seconds</var></code></td></tr>
  83 <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>IdentityCheckTimeout 30</code></td></tr>
  84 <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory</td></tr>
  85 <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
  86 <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_ident</td></tr>
  87 </table>
  88     <p>This directive specifies the timeout duration of an ident
  89     request. The default value of 30 seconds is recommended by <a href="http://www.ietf.org/rfc/rfc1413.txt">RFC 1413</a>, mainly because
  90     of possible network latency. However, you may want to adjust the
  91     timeout value according to your local network speed.</p>
  92
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  96 <p><span>Available Languages: </span><a href="../en/mod/mod_ident.html" title="English">&nbsp;en&nbsp;</a> |
  97 <a href="../ko/mod/mod_ident.html" hreflang="ko" rel="alternate" title="Korean">&nbsp;ko&nbsp;</a></p>
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  99 <p class="apache">Copyright 1995-2006 The Apache Software Foundation or its licensors, as applicable.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
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