You can use the OpenSSO Enterprise Windows Desktop SSO Authentication module in any environment where end-users are using Windows clients, such as desktop or laptop computers, with SPNEGO-enabled browsers. The most common use of this authentication module is to implement single sign-on within an intranet for Windows client users. Once the user has successfully authenticated against OpenSSO Enterprise, the user can keep the intranet session open all day without having to re-authenticate.
A second business use case is to implement cross-domain single sign-on (CDSSO) or internet single sign-on. CDSSO is not possible with Kerberos authentication alone. But by using the OpenSSO Enterprise SSO Token with the SPNEGO protocol, the SSO Token can be passed to multiple domains without the user having to re-authenticate. This enables a user to enjoy the benefit of single sign-on among trusted domains within an extranet.