Hi,<br><br>I&#39;m trying to search entries in an OpenLDAP (v2.4.7) directory using their last modification date as a criteria. Digging in the schemas, I couldn&#39;t find an attribute that contained such a value. The only thing I found was the internal attribute &quot;entryCSN&quot; used by OpenLDAP to manage synchronization.<br>

<br><br><br>I tried to do several ldapsearch queries, but I couldn&#39;t manage to obtain a decent result.<br><br>Using &quot;(&amp;(objectClass=groupOfUniqueNames))&quot;<br>=&gt; I get every group of the directory. I can see that lots of them were modified in 2009<br>

<br>Related problem :<br>Using &quot;(&amp;(objectClass=groupOfUniqueNames)(entryCSN&lt;=20091224))&quot;<br>=&gt; The slapd2.4 process stops without returning anything.<br><br>Using &quot;(&amp;(objectClass=groupOfUniqueNames)(entryCSN &lt;= 20091224))&quot;<br>

(The same query with spaces)<br>=&gt; I don’t get any result. Shouldn&#39;t I retrieve the entries modified before 2010/12/24 ?<br><br>Using &quot;(&amp;(objectClass=groupOfUniqueNames)(entryCSN &gt;= 20091224))&quot;<br>

=&gt; I don’t get any result. Shouldn&#39;t I retrieve the entries modified after 2010/12/24 ?<br><br><br><br>- Does anyone know how to filter entries using their entryCSN?<br>- Btw, is it even possible?<br><br>Best regards<br>

<br>--<br><br>Pierre Laporte<br><br>