title: unable to login in NiFi when integrated with LDAP
body: <p>I have generated certificates for Initial Admin Identity using tls toolkit and secured my standalone NiFi node. I am able to login with Initial Admin Identity via client certificates. I have also created my LDAP users in NiFi and given them permissions to view and modify NiFi UI using Initial Admin Identity user.</p>
  <p>But when I am trying to login with my LDAP users, I am getting <code>unable to login</code> in NiFi UI.</p>
  <p><strong>LDAP Configuration:</strong></p>
  <pre><code>&lt;provider&gt;
      &lt;identifier&gt;ldap-provider&lt;/identifier&gt;
      &lt;class&gt;org.apache.nifi.ldap.LdapProvider&lt;/class&gt;
      &lt;property name=&quot;Authentication Strategy&quot;&gt;SIMPLE&lt;/property&gt;
      &lt;property name=&quot;Manager DN&quot;&gt;cn=admin,dc=example,dc=org&lt;/property&gt;
      &lt;property name=&quot;Manager Password&quot;&gt;admin&lt;/property&gt;
      &lt;property name=&quot;Referral Strategy&quot;&gt;IGNORE&lt;/property&gt;
      &lt;property name=&quot;Connect Timeout&quot;&gt;10 secs&lt;/property&gt;
      &lt;property name=&quot;Read Timeout&quot;&gt;10 secs&lt;/property&gt;
      &lt;property name=&quot;Url&quot;&gt;ldap://192.168.99.100&lt;/property&gt;
      &lt;property name=&quot;User Search Base&quot;&gt;dc=example,dc=org&lt;/property&gt;
      &lt;property name=&quot;User Search Filter&quot;&gt;cn={0}&lt;/property&gt;
      &lt;property name=&quot;Authentication Expiration&quot;&gt;12 hours&lt;/property&gt;
   &lt;/provider&gt;
  </code></pre>
  <p>There is no information present in app and users NiFi logs related to unable to login issue.</p>
  <p>Can someone suggest where things are going wrong &amp; why am I getting unable to login in NiFi UI? How can we successfully login in NiFi with LDAP as authentication provider?</p>