One thing I have noticed on the LDAP side of things is in order to use pap and chap you will need to have both a userpassword and a chappassword. Since userpassword is stored encrypted and chappassword is stored in clear text.
Just something to consider when doing this with LDAP. Gene Parks VIP Direct - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
