---
title: "IdP-Initiated SSO"
slug: "idp-initiated-sso"
updated: 2024-02-22T13:22:19Z
published: 2024-02-22T13:22:19Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.infinite.com/llms.txt
> Use this file to discover all available pages before exploring further.

# IdP-Initiated SSO

Abstract

In this scenario, the user is logged on to the IdP and attempts to access a resource on the Infinite BrassRing Platform server. The SAML 2.0 assertion is transported to the Infinite BrassRing Platform via HTTP POST.

IdP-initiated SSO

![image1.png](https://cdn.us.document360.io/4bb62c4c-9973-48ec-ab93-23d4b1755503/Images/Documentation/fd61ae95-3b46-4cd9-bbb1-d3a49cbb032a.png)

As shown in the diagram, the IdP-initiated SSO process is as follows:

1. The user logs on to the IdP.
2. The user requests access to a protected Infinite BrassRing Platform resource. The user is not logged on to the Infinite BrassRing Platform site.
3. The IdP SSO service returns a HTTP form to the browser with a SAML response containing the authentication assertion and any additional attributes.
4. The browser automatically posts the HTML form back to the Infinite BrassRing Platform.
5. (Not shown) If a valid assertion is received, then a session is established on the Infinite BrassRing Platform and the browser is redirected to the target resource.