Sun ONE Identity Server 6.0 software is a standards-based product
designed to help organizations manage secure access to Web and non
Web-based applications both on the intranet and extranet. As
organizations require more financial, organizational, and
competitive agility to compete in the marketplace, Sun ONE Identity
Server 6.0 provides scalable access management services that help
secure the delivery of business information, improve the user
experience through Web single sign-on, and put a federated identity
framework in place to create new revenue opportunities through
enhanced affinity relationships with business partners and
customers.

http://wwws.sun.com/software/products/identity_srvr/home_identity.html