Before you Begin
The following tutorial should be used to setup a simple reference implementation of the Pentaho BI Server configured with LDAP authentication. The prerequisites needed in order to be successful with this tutorial include an existing installation and usage of the Pentaho BI Server and Enterprise Console, a simple understanding of LDAP and the ability to follow standard installation procedures using install wizards. The tutorial is represented from a Windows operating system perspective, but is applicable across multiple platforms. It is recommended that you get the reference implementation working successfully before configuring your Pentaho BI Server to use your own LDAP configuration.
The rest can be found here at the Pentaho Evaluation Sandbox.http://sandbox.pentaho.com/2011/05/configuring-pentaho-to-use-ldap/