SAP Fiori · Authentication & Single Sign-On

Two near-twins for Fiori SSO: SAML 2.0 and Kerberos. For Internet-facing access, which do you choose and what single network requirement decides it?

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More in Authentication & Single Sign-On

You want an SSO mechanism that needs no issuing system reachable at logon time (e.g. for Internet-facing or occasionally-disconnected devices). Why is X.509 a fit, and what is the catch that disqualifies it for greenfield landscapes?

A landscape has users in several domains and you must map them to SAP users without a one-to-one account match. Which SSO mechanism is built for this, and what specifically lets it bridge the domains?

On the intranet, Kerberos/SPNEGO gives the smoothest Fiori SSO experience. What is the trade-off that decides whether it's actually feasible for your project?

After a user authenticates once on the ABAP front-end server, why don't subsequent Fiori requests re-authenticate from scratch — and what's still NOT skipped?

You've set up the ABAP front-end server to issue SAP logon tickets but HANA-served apps still reject SSO. What configuration step on the acceptor side was missed?

Why must you NOT choose Kerberos/SPNEGO as the SSO mechanism for users who connect from outside the corporate network, and what is the only workaround?

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