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Status Under review
Workspace WebSphere Liberty
Created by Guest
Created on Apr 25, 2024

SAML Single Sign On or Single Logout to support HTTP-Redirect Binding

Liberty seems to only support HTTP-POST binding for SAML Login and Logout based on our investigation

<md:SingleLogoutService
                       Binding="urn:oasis:names:tc:SAML:2.0:bindings:HTTP-POST"
                       Location="https://......." />
We have configured our applications (RP) with Liberty OP which is further delegated to a SAML IDP.
https://www.ibm.com/docs/en/was-liberty/nd?topic=liberty-configuring-saml-web-browser-sso-in

For the SAML IdPs where the metadata contains SingleLogoutService HTTP-POST binding , the logout works fine.

MS Azure SAML IDP only supports HTTP-Redirect at this time and customers using Azure have no option to enable HTTP-Post.
Reference documentation: https://learn.microsoft.com/en-us/entra/identity-platform/single-sign-out-saml-protocol 

Idea priority Medium