Dynamic groups/lists

Hi,

I have access to LDAP server which doesn't have any groups defined. All users have only attributes which are used to distinguish to which type of users they belong and for application which I have intention to use groups are necessary.

I don't have authority to change that but I can create my own LDAP proxy server and direct my application to it.

Question is, can I create dynamic groups which will reside only on that proxy server. I am already familiar with translucent and ordinary proxy servers.

Br

Sasa