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<div class="section" id="ldap-backend-on-ubuntu-10-4-lucid">
<span id="ldap-be-ubuntu"></span><h1>LDAP backend on Ubuntu 10.4 (lucid)<a class="headerlink" href="#ldap-backend-on-ubuntu-10-4-lucid" title="Permalink to this headline">¶</a></h1>
<p>Setting up Kerberos v1.9 with LDAP backend on Ubuntu 10.4 (Lucid Lynx)</p>
<div class="section" id="prerequisites">
<h2>Prerequisites<a class="headerlink" href="#prerequisites" title="Permalink to this headline">¶</a></h2>
<p>Install the following packages: <em>slapd, ldap-utils</em> and <em>libldap2-dev</em></p>
<p>You can install the necessary packages with these commands:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">sudo</span> <span class="n">apt</span><span class="o">-</span><span class="n">get</span> <span class="n">install</span> <span class="n">slapd</span>
<span class="n">sudo</span> <span class="n">apt</span><span class="o">-</span><span class="n">get</span> <span class="n">install</span> <span class="n">ldap</span><span class="o">-</span><span class="n">utils</span>
<span class="n">sudo</span> <span class="n">apt</span><span class="o">-</span><span class="n">get</span> <span class="n">install</span> <span class="n">libldap2</span><span class="o">-</span><span class="n">dev</span>
</pre></div>
</div>
<p>Extend the user schema using schemas from standart OpenLDAP
distribution: <em>cosine, mics, nis, inetcomperson</em></p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ldapadd</span> <span class="o">-</span><span class="n">Y</span> <span class="n">EXTERNAL</span> <span class="o">-</span><span class="n">H</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span> <span class="o">-</span><span class="n">f</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">ldap</span><span class="o">/</span><span class="n">schema</span><span class="o">/</span><span class="n">cosine</span><span class="o">.</span><span class="n">ldif</span>
<span class="n">ldapadd</span> <span class="o">-</span><span class="n">Y</span> <span class="n">EXTERNAL</span> <span class="o">-</span><span class="n">H</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span> <span class="o">-</span><span class="n">f</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">ldap</span><span class="o">/</span><span class="n">schema</span><span class="o">/</span><span class="n">mics</span><span class="o">.</span><span class="n">ldif</span>
<span class="n">ldapadd</span> <span class="o">-</span><span class="n">Y</span> <span class="n">EXTERNAL</span> <span class="o">-</span><span class="n">H</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span> <span class="o">-</span><span class="n">f</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">ldap</span><span class="o">/</span><span class="n">schema</span><span class="o">/</span><span class="n">nis</span><span class="o">.</span><span class="n">ldif</span>
<span class="n">ldapadd</span> <span class="o">-</span><span class="n">Y</span> <span class="n">EXTERNAL</span> <span class="o">-</span><span class="n">H</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span> <span class="o">-</span><span class="n">f</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">ldap</span><span class="o">/</span><span class="n">schema</span><span class="o">/</span><span class="n">inetcomperson</span><span class="o">.</span><span class="n">ldif</span>
</pre></div>
</div>
</div>
<div class="section" id="building-kerberos-from-source">
<h2>Building Kerberos from source<a class="headerlink" href="#building-kerberos-from-source" title="Permalink to this headline">¶</a></h2>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="o">./</span><span class="n">configure</span> <span class="o">--</span><span class="k">with</span><span class="o">-</span><span class="n">ldap</span>
<span class="n">make</span>
<span class="n">sudo</span> <span class="n">make</span> <span class="n">install</span>
</pre></div>
</div>
</div>
<div class="section" id="setting-up-kerberos">
<h2>Setting up Kerberos<a class="headerlink" href="#setting-up-kerberos" title="Permalink to this headline">¶</a></h2>
<div class="section" id="configuration">
<h3>Configuration<a class="headerlink" href="#configuration" title="Permalink to this headline">¶</a></h3>
<p>Update kdc.conf with the LDAP back-end information:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="p">[</span><span class="n">realms</span><span class="p">]</span>
<span class="n">EXAMPLE</span><span class="o">.</span><span class="n">COM</span> <span class="o">=</span> <span class="p">{</span>
<span class="n">database_module</span> <span class="o">=</span> <span class="n">LDAP</span>
<span class="p">}</span>
<span class="p">[</span><span class="n">dbmodules</span><span class="p">]</span>
<span class="n">LDAP</span> <span class="o">=</span> <span class="p">{</span>
<span class="n">db_library</span> <span class="o">=</span> <span class="n">kldap</span>
<span class="n">ldap_kerberos_container_dn</span> <span class="o">=</span> <span class="n">cn</span><span class="o">=</span><span class="n">krbContainer</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">example</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">com</span>
<span class="n">ldap_kdc_dn</span> <span class="o">=</span> <span class="n">cn</span><span class="o">=</span><span class="n">admin</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">example</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">com</span>
<span class="n">ldap_kadmind_dn</span> <span class="o">=</span> <span class="n">cn</span><span class="o">=</span><span class="n">admin</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">example</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">com</span>
<span class="n">ldap_service_password_file</span> <span class="o">=</span> <span class="o">/</span><span class="n">usr</span><span class="o">/</span><span class="n">local</span><span class="o">/</span><span class="n">var</span><span class="o">/</span><span class="n">krb5kdc</span><span class="o">/</span><span class="n">admin</span><span class="o">.</span><span class="n">stash</span>
<span class="n">ldap_servers</span> <span class="o">=</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span>
<span class="p">}</span>
</pre></div>
</div>
</div>
<div class="section" id="schema">
<h3>Schema<a class="headerlink" href="#schema" title="Permalink to this headline">¶</a></h3>
<p>From the source tree copy
<code class="docutils literal notranslate"><span class="pre">src/plugins/kdb/ldap/libkdb_ldap/kerberos.schema</span></code> into
<code class="docutils literal notranslate"><span class="pre">/etc/ldap/schema</span></code></p>
<p>Warning: this step should be done after slapd is installed to avoid
problems with slapd installation.</p>
<p>To convert kerberos.schema to run-time configuration (<code class="docutils literal notranslate"><span class="pre">cn=config</span></code>)
do the following:</p>
<ol class="arabic">
<li><p class="first">Create a temporary file <code class="docutils literal notranslate"><span class="pre">/tmp/schema_convert.conf</span></code> with the
following content:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">include</span> <span class="o">/</span><span class="n">etc</span><span class="o">/</span><span class="n">ldap</span><span class="o">/</span><span class="n">schema</span><span class="o">/</span><span class="n">kerberos</span><span class="o">.</span><span class="n">schema</span>
</pre></div>
</div>
</li>
<li><p class="first">Create a temporary directory <code class="docutils literal notranslate"><span class="pre">/tmp/krb5_ldif</span></code>.</p>
</li>
<li><p class="first">Run:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">slaptest</span> <span class="o">-</span><span class="n">f</span> <span class="o">/</span><span class="n">tmp</span><span class="o">/</span><span class="n">schema_convert</span><span class="o">.</span><span class="n">conf</span> <span class="o">-</span><span class="n">F</span> <span class="o">/</span><span class="n">tmp</span><span class="o">/</span><span class="n">krb5_ldif</span>
</pre></div>
</div>
<p>This should in a new file named
<code class="docutils literal notranslate"><span class="pre">/tmp/krb5_ldif/cn=config/cn=schema/cn={0}kerberos.ldif</span></code>.</p>
</li>
<li><p class="first">Edit <code class="docutils literal notranslate"><span class="pre">/tmp/krb5_ldif/cn=config/cn=schema/cn={0}kerberos.ldif</span></code> by
replacing the lines:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">dn</span><span class="p">:</span> <span class="n">cn</span><span class="o">=</span><span class="p">{</span><span class="mi">0</span><span class="p">}</span><span class="n">kerberos</span>
<span class="n">cn</span><span class="p">:</span> <span class="p">{</span><span class="mi">0</span><span class="p">}</span><span class="n">kerberos</span>
</pre></div>
</div>
<p>with</p>
<blockquote>
<div><p>dn: cn=kerberos,cn=schema,cn=config
cn: kerberos</p>
</div></blockquote>
<p>Also, remove following attribute-value pairs:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">structuralObjectClass</span><span class="p">:</span> <span class="n">olcSchemaConfig</span>
<span class="n">entryUUID</span><span class="p">:</span> <span class="o">...</span>
<span class="n">creatorsName</span><span class="p">:</span> <span class="n">cn</span><span class="o">=</span><span class="n">config</span>
<span class="n">createTimestamp</span><span class="p">:</span> <span class="o">...</span>
<span class="n">entryCSN</span><span class="p">:</span> <span class="o">...</span>
<span class="n">modifiersName</span><span class="p">:</span> <span class="n">cn</span><span class="o">=</span><span class="n">config</span>
<span class="n">modifyTimestamp</span><span class="p">:</span> <span class="o">...</span>
</pre></div>
</div>
</li>
<li><p class="first">Load the new schema with ldapadd (with the proper authentication):</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">ldapadd</span> <span class="o">-</span><span class="n">Y</span> <span class="n">EXTERNAL</span> <span class="o">-</span><span class="n">H</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span> <span class="o">-</span><span class="n">f</span> <span class="o">/</span><span class="n">tmp</span><span class="o">/</span><span class="n">krb5_ldif</span><span class="o">/</span><span class="n">cn</span><span class="o">=</span><span class="n">config</span><span class="o">/</span><span class="n">cn</span><span class="o">=</span><span class="n">schema</span><span class="o">/</span><span class="n">cn</span><span class="o">=</span><span class="p">{</span><span class="mi">0</span><span class="p">}</span><span class="n">kerberos</span><span class="o">.</span><span class="n">ldif</span>
</pre></div>
</div>
<p>which should result the message <code class="docutils literal notranslate"><span class="pre">adding</span> <span class="pre">new</span> <span class="pre">entry</span>
<span class="pre">"cn=kerberos,cn=schema,cn=config"</span></code>.</p>
</li>
</ol>
</div>
</div>
<div class="section" id="create-kerberos-database">
<h2>Create Kerberos database<a class="headerlink" href="#create-kerberos-database" title="Permalink to this headline">¶</a></h2>
<p>Using LDAP administrator credentials, create Kerberos database and
master key stash:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">kdb5_ldap_util</span> <span class="o">-</span><span class="n">D</span> <span class="n">cn</span><span class="o">=</span><span class="n">admin</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">example</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">com</span> <span class="o">-</span><span class="n">H</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span> <span class="n">create</span> <span class="o">-</span><span class="n">s</span>
</pre></div>
</div>
<p>Stash the LDAP administrative passwords:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">kdb5_ldap_util</span> <span class="o">-</span><span class="n">D</span> <span class="n">cn</span><span class="o">=</span><span class="n">admin</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">example</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">com</span> <span class="o">-</span><span class="n">H</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span> <span class="n">stashsrvpw</span> <span class="n">cn</span><span class="o">=</span><span class="n">admin</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">example</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">com</span>
</pre></div>
</div>
<p>Start <a class="reference internal" href="../admin_commands/krb5kdc.html#krb5kdc-8"><span class="std std-ref">krb5kdc</span></a>:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">krb5kdc</span>
</pre></div>
</div>
<p>To destroy database run:</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">kdb5_ldap_util</span> <span class="o">-</span><span class="n">D</span> <span class="n">cn</span><span class="o">=</span><span class="n">admin</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">example</span><span class="p">,</span><span class="n">dc</span><span class="o">=</span><span class="n">com</span> <span class="o">-</span><span class="n">H</span> <span class="n">ldapi</span><span class="p">:</span><span class="o">///</span> <span class="n">destroy</span> <span class="o">-</span><span class="n">f</span>
</pre></div>
</div>
</div>
<div class="section" id="useful-references">
<h2>Useful references<a class="headerlink" href="#useful-references" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><a class="reference external" href="https://help.ubuntu.com/10.04/serverguide/C/kerberos-ldap.html">Kerberos and LDAP</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
<div class="sidebar">
<h2>On this page</h2>
<ul>
<li><a class="reference internal" href="#">LDAP backend on Ubuntu 10.4 (lucid)</a><ul>
<li><a class="reference internal" href="#prerequisites">Prerequisites</a></li>
<li><a class="reference internal" href="#building-kerberos-from-source">Building Kerberos from source</a></li>
<li><a class="reference internal" href="#setting-up-kerberos">Setting up Kerberos</a><ul>
<li><a class="reference internal" href="#configuration">Configuration</a></li>
<li><a class="reference internal" href="#schema">Schema</a></li>
</ul>
</li>
<li><a class="reference internal" href="#create-kerberos-database">Create Kerberos database</a></li>
<li><a class="reference internal" href="#useful-references">Useful references</a></li>
</ul>
</li>
</ul>
<br/>
<h2>Table of contents</h2>
<ul class="current">
<li class="toctree-l1"><a class="reference internal" href="../../user/index.html">For users</a></li>
<li class="toctree-l1 current"><a class="reference internal" href="../index.html">For administrators</a><ul class="current">
<li class="toctree-l2"><a class="reference internal" href="../install.html">Installation guide</a></li>
<li class="toctree-l2"><a class="reference internal" href="../conf_files/index.html">Configuration Files</a></li>
<li class="toctree-l2"><a class="reference internal" href="../realm_config.html">Realm configuration decisions</a></li>
<li class="toctree-l2"><a class="reference internal" href="../database.html">Database administration</a></li>
<li class="toctree-l2"><a class="reference internal" href="../dbtypes.html">Database types</a></li>
<li class="toctree-l2"><a class="reference internal" href="../lockout.html">Account lockout</a></li>
<li class="toctree-l2"><a class="reference internal" href="../conf_ldap.html">Configuring Kerberos with OpenLDAP back-end</a></li>
<li class="toctree-l2"><a class="reference internal" href="../appl_servers.html">Application servers</a></li>
<li class="toctree-l2"><a class="reference internal" href="../host_config.html">Host configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="../backup_host.html">Backups of secure hosts</a></li>
<li class="toctree-l2"><a class="reference internal" href="../pkinit.html">PKINIT configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="../otp.html">OTP Preauthentication</a></li>
<li class="toctree-l2"><a class="reference internal" href="../spake.html">SPAKE Preauthentication</a></li>
<li class="toctree-l2"><a class="reference internal" href="../dictionary.html">Addressing dictionary attack risks</a></li>
<li class="toctree-l2"><a class="reference internal" href="../princ_dns.html">Principal names and DNS</a></li>
<li class="toctree-l2"><a class="reference internal" href="../enctypes.html">Encryption types</a></li>
<li class="toctree-l2"><a class="reference internal" href="../https.html">HTTPS proxy configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="../auth_indicator.html">Authentication indicators</a></li>
<li class="toctree-l2"><a class="reference internal" href="../admin_commands/index.html">Administration programs</a></li>
<li class="toctree-l2"><a class="reference internal" href="../../mitK5defaults.html">MIT Kerberos defaults</a></li>
<li class="toctree-l2"><a class="reference internal" href="../env_variables.html">Environment variables</a></li>
<li class="toctree-l2"><a class="reference internal" href="../troubleshoot.html">Troubleshooting</a></li>
<li class="toctree-l2 current"><a class="reference internal" href="index.html">Advanced topics</a><ul class="current">
<li class="toctree-l3 current"><a class="current reference internal" href="#">LDAP backend on Ubuntu 10.4 (lucid)</a></li>
<li class="toctree-l3"><a class="reference internal" href="retiring-des.html">Retiring DES</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="../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>
<li class="toctree-l1"><a class="reference internal" href="../../resources.html">Resources</a></li>
</ul>
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