name: SSOS
full_form: SSO Service
context: with collocated NAF and AS Figure 4.2-7: Combined Liberty Alliance ID-WSF and GAA architecture with collocated NAF and AS and deployment of ID-FF for UE-SP communication The network model for GBA interworking scenario with the Liberty ID-WSF Authentication Service ,where the AS and SSOS are separate, is shown in Figure 4.2-7, According to the Liberty Alliance Project, ID-WSF: "Authentication Service and Single Sign-On Specification" [8], the SSOS may also be collocated with the AS, which can also be applied in Figure 4.2-4. In an interworking scenario with the Liberty ID-WSF Authentication Service, a service provider that wants to request user authentication would redirect the user to the AS/NAF. This is depicted in Figure 4.2-7. The user will be authenticated in a first step to the AS/NAF for which GBA procedures may be used. The AS/NAF interaction with the BSF would be transparent to the SP. In a second step the user will request a security token from the Single Sign On Service
description: The SSO Service (SSOS) is responsible for providing single sign-on functionality, enabling users to access multiple services with a single set of credentials. It interacts with other network functions, such as the Authentication Service (AS) and Network Application Function (NAF), to facilitate user authentication and authorization.
explanation: The context describes SSOS as a service that provides single sign-on functionality, which is a type of telecommunication offering. Therefore, it is classified as a 'Service' based on its role in enabling users to access multiple services with a single set of credentials.
section_title: 4.2.1.2	Collocation of AS/NAF in  -WSF
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