UCM SAML 2.0 Identity Provider (RedIRIS SIR / eduGAIN)
UCM's institutional single sign-on, registered in eduGAIN through RedIRIS SIR, the Spanish national research and education federation. entityID https://www.rediris.es/sir/ucmidp, role IDPSSODescriptor, shibmd:Scope ucm.es, Sirtfi asserted, first seen in eduGAIN 2017-04-13. Probed 2026-08-30: the entityID returns HTTP 200 text/xml, 10279 bytes of SAML 2.0 metadata with SSOService and SingleLogoutService at https://sir.rediris.es/ucm/saml2/idp/. Operator is tenant, not institution — the IdP runs on RedIRIS infrastructure under a UCM-specific /ucm/ path — but the entity, the scope and the user population are UCM's.