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<div class="section" id="mit-kerberos-defaults">
<span id="mitk5defaults"></span><h1>MIT Kerberos defaults<a class="headerlink" href="#mit-kerberos-defaults" title="Permalink to this headline">¶</a></h1>
<div class="section" id="general-defaults">
<h2>General defaults<a class="headerlink" href="#general-defaults" title="Permalink to this headline">¶</a></h2>
<table border="1" class="docutils">
<colgroup>
<col width="45%" />
<col width="31%" />
<col width="24%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">Description</th>
<th class="head">Default</th>
<th class="head">Environment</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td><a class="reference internal" href="basic/keytab_def.html#keytab-definition"><em>keytab</em></a> file</td>
<td><tt class="docutils literal"><span class="pre">FILE:/etc/krb5.keytab</span></tt></td>
<td><strong>KRB5_KTNAME</strong></td>
</tr>
<tr class="row-odd"><td>Client <a class="reference internal" href="basic/keytab_def.html#keytab-definition"><em>keytab</em></a> file</td>
<td><tt class="docutils literal"><span class="pre">FILE:/var/lib/krb5/user/%{euid}/client.keytab</span></tt></td>
<td><strong>KRB5_CLIENT_KTNAME</strong></td>
</tr>
<tr class="row-even"><td>Kerberos config file <a class="reference internal" href="admin/conf_files/krb5_conf.html#krb5-conf-5"><em>krb5.conf</em></a></td>
<td><tt class="docutils literal"><span class="pre">/etc/krb5.conf</span></tt><tt class="docutils literal"><span class="pre">:</span></tt><tt class="docutils literal"><span class="pre">/etc</span></tt><tt class="docutils literal"><span class="pre">/krb5.conf</span></tt></td>
<td><strong>KRB5_CONFIG</strong></td>
</tr>
<tr class="row-odd"><td>KDC config file <a class="reference internal" href="admin/conf_files/kdc_conf.html#kdc-conf-5"><em>kdc.conf</em></a></td>
<td><tt class="docutils literal"><span class="pre">/var/lib</span></tt><tt class="docutils literal"><span class="pre">/krb5kdc</span></tt><tt class="docutils literal"><span class="pre">/kdc.conf</span></tt></td>
<td><strong>KRB5_KDC_PROFILE</strong></td>
</tr>
<tr class="row-even"><td>KDC database path (DB2)</td>
<td><tt class="docutils literal"><span class="pre">/var/lib</span></tt><tt class="docutils literal"><span class="pre">/krb5kdc</span></tt><tt class="docutils literal"><span class="pre">/principal</span></tt></td>
<td> </td>
</tr>
<tr class="row-odd"><td>Master key <a class="reference internal" href="basic/stash_file_def.html#stash-definition"><em>stash file</em></a></td>
<td><tt class="docutils literal"><span class="pre">/var/lib</span></tt><tt class="docutils literal"><span class="pre">/krb5kdc</span></tt><tt class="docutils literal"><span class="pre">/.k5.</span></tt><em>realm</em></td>
<td> </td>
</tr>
<tr class="row-even"><td>Admin server ACL file <a class="reference internal" href="admin/conf_files/kadm5_acl.html#kadm5-acl-5"><em>kadm5.acl</em></a></td>
<td><tt class="docutils literal"><span class="pre">/var/lib</span></tt><tt class="docutils literal"><span class="pre">/krb5kdc</span></tt><tt class="docutils literal"><span class="pre">/kadm5.acl</span></tt></td>
<td> </td>
</tr>
<tr class="row-odd"><td>Plugin base directory</td>
<td><tt class="docutils literal"><span class="pre">/usr/lib</span></tt><tt class="docutils literal"><span class="pre">/krb5/plugins</span></tt></td>
<td> </td>
</tr>
<tr class="row-even"><td><a class="reference internal" href="basic/rcache_def.html#rcache-definition"><em>replay cache</em></a> directory</td>
<td><tt class="docutils literal"><span class="pre">/var/tmp</span></tt></td>
<td><strong>KRB5RCACHEDIR</strong></td>
</tr>
<tr class="row-odd"><td>Master key default enctype</td>
<td><tt class="docutils literal"><span class="pre">aes256-cts-hmac-sha1-96</span></tt></td>
<td> </td>
</tr>
<tr class="row-even"><td>Default <a class="reference internal" href="admin/conf_files/kdc_conf.html#keysalt-lists"><em>keysalt list</em></a></td>
<td><tt class="docutils literal"><span class="pre">aes256-cts-hmac-sha1-96:normal</span> <span class="pre">aes128-cts-hmac-sha1-96:normal</span> <span class="pre">des3-cbc-sha1:normal</span> <span class="pre">arcfour-hmac-md5:normal</span></tt></td>
<td> </td>
</tr>
<tr class="row-odd"><td>Permitted enctypes</td>
<td><tt class="docutils literal"><span class="pre">aes256-cts-hmac-sha1-96</span> <span class="pre">aes128-cts-hmac-sha1-96</span> <span class="pre">des3-cbc-sha1</span> <span class="pre">arcfour-hmac-md5</span> <span class="pre">camellia256-cts-cmac</span> <span class="pre">camellia128-cts-cmac</span> <span class="pre">des-cbc-crc</span> <span class="pre">des-cbc-md5</span> <span class="pre">des-cbc-md4</span></tt></td>
<td> </td>
</tr>
<tr class="row-even"><td>KDC default port</td>
<td>88</td>
<td> </td>
</tr>
<tr class="row-odd"><td>Second KDC default port</td>
<td>750</td>
<td> </td>
</tr>
<tr class="row-even"><td>Admin server port</td>
<td>749</td>
<td> </td>
</tr>
<tr class="row-odd"><td>Password change port</td>
<td>464</td>
<td> </td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="slave-kdc-propagation-defaults">
<h2>Slave KDC propagation defaults<a class="headerlink" href="#slave-kdc-propagation-defaults" title="Permalink to this headline">¶</a></h2>
<p>This table shows defaults used by the <a class="reference internal" href="admin/admin_commands/kprop.html#kprop-8"><em>kprop</em></a> and
<a class="reference internal" href="admin/admin_commands/kpropd.html#kpropd-8"><em>kpropd</em></a> programs.</p>
<table border="1" class="docutils">
<colgroup>
<col width="39%" />
<col width="45%" />
<col width="16%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">Description</th>
<th class="head">Default</th>
<th class="head">Environment</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>kprop database dump file</td>
<td><tt class="docutils literal"><span class="pre">/var/lib</span></tt><tt class="docutils literal"><span class="pre">/krb5kdc</span></tt><tt class="docutils literal"><span class="pre">/slave_datatrans</span></tt></td>
<td> </td>
</tr>
<tr class="row-odd"><td>kpropd temporary dump file</td>
<td><tt class="docutils literal"><span class="pre">/var/lib</span></tt><tt class="docutils literal"><span class="pre">/krb5kdc</span></tt><tt class="docutils literal"><span class="pre">/from_master</span></tt></td>
<td> </td>
</tr>
<tr class="row-even"><td>kdb5_util location</td>
<td><tt class="docutils literal"><span class="pre">/usr/sbin</span></tt><tt class="docutils literal"><span class="pre">/kdb5_util</span></tt></td>
<td> </td>
</tr>
<tr class="row-odd"><td>kprop location</td>
<td><tt class="docutils literal"><span class="pre">/usr/sbin</span></tt><tt class="docutils literal"><span class="pre">/kprop</span></tt></td>
<td> </td>
</tr>
<tr class="row-even"><td>kpropd ACL file</td>
<td><tt class="docutils literal"><span class="pre">/var/lib</span></tt><tt class="docutils literal"><span class="pre">/krb5kdc</span></tt><tt class="docutils literal"><span class="pre">/kpropd.acl</span></tt></td>
<td> </td>
</tr>
<tr class="row-odd"><td>kprop port</td>
<td>754</td>
<td>KPROP_PORT</td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="default-paths-for-unix-like-systems">
<span id="paths"></span><h2>Default paths for Unix-like systems<a class="headerlink" href="#default-paths-for-unix-like-systems" title="Permalink to this headline">¶</a></h2>
<p>On Unix-like systems, some paths used by MIT krb5 depend on parameters
chosen at build time. For a custom build, these paths default to
subdirectories of <tt class="docutils literal"><span class="pre">/usr/local</span></tt>. When MIT krb5 is integrated into an
operating system, the paths are generally chosen to match the
operating system’s filesystem layout.</p>
<table border="1" class="docutils">
<colgroup>
<col width="28%" />
<col width="14%" />
<col width="29%" />
<col width="29%" />
</colgroup>
<thead valign="bottom">
<tr class="row-odd"><th class="head">Description</th>
<th class="head">Symbolic name</th>
<th class="head">Custom build path</th>
<th class="head">Typical OS path</th>
</tr>
</thead>
<tbody valign="top">
<tr class="row-even"><td>User programs</td>
<td>BINDIR</td>
<td><tt class="docutils literal"><span class="pre">/usr/local/bin</span></tt></td>
<td><tt class="docutils literal"><span class="pre">/usr/bin</span></tt></td>
</tr>
<tr class="row-odd"><td>Libraries and plugins</td>
<td>LIBDIR</td>
<td><tt class="docutils literal"><span class="pre">/usr/local/lib</span></tt></td>
<td><tt class="docutils literal"><span class="pre">/usr/lib</span></tt></td>
</tr>
<tr class="row-even"><td>Parent of KDC state dir</td>
<td>LOCALSTATEDIR</td>
<td><tt class="docutils literal"><span class="pre">/usr/local/var</span></tt></td>
<td><tt class="docutils literal"><span class="pre">/var</span></tt></td>
</tr>
<tr class="row-odd"><td>Administrative programs</td>
<td>SBINDIR</td>
<td><tt class="docutils literal"><span class="pre">/usr/local/sbin</span></tt></td>
<td><tt class="docutils literal"><span class="pre">/usr/sbin</span></tt></td>
</tr>
<tr class="row-even"><td>Alternate krb5.conf dir</td>
<td>SYSCONFDIR</td>
<td><tt class="docutils literal"><span class="pre">/usr/local/etc</span></tt></td>
<td><tt class="docutils literal"><span class="pre">/etc</span></tt></td>
</tr>
<tr class="row-odd"><td>Default ccache name</td>
<td>DEFCCNAME</td>
<td><tt class="docutils literal"><span class="pre">FILE:/tmp/krb5cc_%{uid}</span></tt></td>
<td><tt class="docutils literal"><span class="pre">FILE:/tmp/krb5cc_%{uid}</span></tt></td>
</tr>
<tr class="row-even"><td>Default keytab name</td>
<td>DEFKTNAME</td>
<td><tt class="docutils literal"><span class="pre">FILE:/etc/krb5.keytab</span></tt></td>
<td><tt class="docutils literal"><span class="pre">FILE:/etc/krb5.keytab</span></tt></td>
</tr>
</tbody>
</table>
<p>The default client keytab name (DEFCKTNAME) typically defaults to
<tt class="docutils literal"><span class="pre">FILE:/usr/local/var/krb5/user/%{euid}/client.keytab</span></tt> for a custom
build. A native build will typically use a path which will vary
according to the operating system’s layout of <tt class="docutils literal"><span class="pre">/var</span></tt>.</p>
</div>
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<h2>On this page</h2>
<ul>
<li><a class="reference internal" href="#">MIT Kerberos defaults</a><ul>
<li><a class="reference internal" href="#general-defaults">General defaults</a></li>
<li><a class="reference internal" href="#slave-kdc-propagation-defaults">Slave KDC propagation defaults</a></li>
<li><a class="reference internal" href="#default-paths-for-unix-like-systems">Default paths for Unix-like systems</a></li>
</ul>
</li>
</ul>
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<li class="toctree-l1 current"><a class="reference internal" href="admin/index.html">For administrators</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="admin/install.html">Installation guide</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/conf_files/index.html">Configuration Files</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/realm_config.html">Realm configuration decisions</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/database.html">Database administration</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/lockout.html">Account lockout</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/conf_ldap.html">Configuring Kerberos with OpenLDAP back-end</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/appl_servers.html">Application servers</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/host_config.html">Host configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/backup_host.html">Backups of secure hosts</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/pkinit.html">PKINIT configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/otp.html">OTP Preauthentication</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/princ_dns.html">Principal names and DNS</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/enctypes.html">Encryption types</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/admin_commands/index.html">Administration programs</a></li>
<li class="toctree-l2 current"><a class="current reference internal" href="">MIT Kerberos defaults</a><ul class="simple">
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="admin/env_variables.html">Environment variables</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/troubleshoot.html">Troubleshooting</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/advanced/index.html">Advanced topics</a></li>
<li class="toctree-l2"><a class="reference internal" href="admin/various_envs.html">Various links</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="appdev/index.html">For application developers</a></li>
<li class="toctree-l1"><a class="reference internal" href="plugindev/index.html">For plugin module developers</a></li>
<li class="toctree-l1"><a class="reference internal" href="build/index.html">Building Kerberos V5</a></li>
<li class="toctree-l1"><a class="reference internal" href="basic/index.html">Kerberos V5 concepts</a></li>
<li class="toctree-l1"><a class="reference internal" href="formats/index.html">Protocols and file formats</a></li>
<li class="toctree-l1"><a class="reference internal" href="mitK5features.html">MIT Kerberos features</a></li>
<li class="toctree-l1"><a class="reference internal" href="build_this.html">How to build this documentation from the source</a></li>
<li class="toctree-l1"><a class="reference internal" href="about.html">Contributing to the MIT Kerberos Documentation</a></li>
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