Does uPortal support LDAP authentication?
Yes. The problem, however, is that there are dozens of possible ways to do an LDAP authentication for uPortal and hence what is available now may not be useful for your campus. But there are a few Universities now who are using uPortal in conjunction with an LDAP server to authenticate users. There is a reference implementation available now for uPortal which handles authentication of users to the portal from information stored in an LDAP server.