Stanford is currently a member of two trust federations: our own FarmFed and InCommon. The links provided below will provide information about the federations and any special requirements for joining.
In practice, Stanford users usually play the role of liaison and request that we enable SSO (single sign-on) for a given SP (service provider website). If the SP is a member of InCommon, there is no metadata exchange necessary and it's just a matter of determining necessary attributes to release and small configuration changes on the SP side. If the SP is not a member of InCommon, then we exchange metadata, effectively adding the SP to FarmFed. In both cases, the Stanford requester initiating the request is expected to be the liaison and manage requests to data owners for attribute release.
If you are interested in having Stanford join any other shibboleth federation, please submit a Help ticket with information about that federation and which service providers in that federation would be of use to the Stanford community. Be sure to include links to instructions and/or contacts for the federation.
Stanford University is currently a member in the following federations: