OpenLDAP Groups

Hi, Is there some way to configure free radius to use openldap groups? Like.. My user1 is group ceo and can connect to the wifi lan… but user2 is at the group "nowifi" and then not allowed to connect at wifi lan. And is possible to identify the source of the connection? Some regex exp. Like: If username = user1 and source ip is = classB Allow connection to switch or wlc Else Reject ? Thank You Atenciosamente, Jean Carlos Coelho Analista de Soluções Teltec Solutions Fone: 48 3031.3450 | DDR: 467 | Cel: 48 9179.6013 [http://suporte.teltecnetworks.com.br/images/Assinaturas/figura.jpg]<http://www.teltecsolutions.com.br/site2009/downloads/sign.html>