Has ne1 setup proftp to authenticate users is and eDirectory?

Currently my company uses a Novell FTP server becuase it authenticates users
for login and based those credentials will allow acces to certian
directories. I would like to use Linux to accomplish this. The Novell FTP
server is unstable.

The problem I'm finding is that alot of FTP server will authenticate the
users logon with the directory but that's it. I need the FTP software to
also query the directory for folder access.