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Single Sign-On

Single Sign-On (SSO) is mechanism whereby a single action of user authentication and authorization can permit a user to access all computers and systems where that user has access permission, without the need to enter multiple passwords.

SSO reduces human error, a major component of systems failure, and is therefore highly desirable.

However, it is extremely difficult to implement.

The Open Group endorses consolidated user administration systems which achieve "openness" by adhering to the IETF's Lightweight Directory Access Protocol-based meta-directory model (LDAP). Its objective is to produce Open Group Product Standards for LDAP, based on the RFCs produced by the ASID Working Group of the IETF (Product Standards are profiles of the base standards that serve to define Open Group brands and test suites). Work on developing LDAP profiles is underway in The Open Group's Directory Interoperability Forum (DIF).

Introduction to Single Sign-On

Scope of the Single Sign-On Standard

Send email to the Single Sign-On discussion list.

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