Table of Contents

Outbound SAML

Outbound SAML setup from Gluu Server is pretty easy using the Gluu Server's oxTrust GUI. The following pieces of information are needed from the target website or application:

The three points above are described briefly below.

Metadata of website:

Metadata is a XML file which has configuration data used to provision any website (SP) or IDP (Gluu Server) to communicate with each other. It is interchangeable between the IDP and the SP.

Websites (SP) can provide metadata via URL or as a separate file. If the SP provides an separate XML file, the Gluu Server can check the integrity of that metadata with its own mechanism. This mechanism can be shown and tested from Gluu Server oxTrust GUI.

Required attribute of website:

Every organization has their own policy to release/share attributes with any IDP or SP. The Gluu Server supports, and can be configured for standard or custom attributes. This can be done from the Gluu Server oxTrust GUI.

SSO testing endpoint of website:

Every website (SP) should have both a staging and a production uri endpoint which can be checked for SSO, where the user will access to log into that SP.

Configuring Outbound SAML SSO

The Gluu Server's SAML capabilities are tightly integrated with Shibboleth.

SAML Trust Relationship

A Trust Relationship is the mechanism to create single sign-on to any SAML Service Provider (SP) from the Gluu Server SAML IDP. Trust Relationships can be created from within the GUI.

How to create Trust Relationship

In order to create a trust relationship with any SP:

  • Go to SAML → Trust Relationships
  • Click on “Add Relationship” Image
  • A new page will appear. Here, as a Gluu Server administrator you need to provide all the information regarding the SP to establish Trust Relationship from Gluu Server. Image
    • Display Name: Name of the Trust Relationship (it should be unique for every trust relationship)
    • Description: Little description. Purpose and SSO link can be added here.
    • Metadata Type: Depending on trusted party’s metadata (SP), there are four available types in Gluu Server

      • File: If SP has uploadable metadata in XML format, this option works best.
      • URI: If the metadata of SP has uri link and accessible from internet, Gluu Server Administrator need to use this option.
      • Generate: Using Gluu Server to generate configuration files for SP is another big option when the SP is inhouse application or “Shibboleth SP” is installed or going to be installed in target application site (SP). How to install Shibboleth SP will help user to configure and install Shibboleth SP on their own area. Please note few things when you are going to use Generate method for your SP.

        • URL : This is the hostname of SP
        • Public certificate : You must have to provide the certificate which is Base64 encoded ASCII file and contain "-----BEGIN CERTIFICATE-----" and "-----END CERTIFICATE-----". This certificate can not be password protected.
        • After creating the Trust Relationship, download the generated configuration files from Download Shibboleth2 configuration files link and place these configuration files inside your SP configuration.
      • Federation: If target application ( SP ) is affiliated with any Federation server (i.e: InCommon, NJEdge etc. ), this option of “Metadata Type” is required. Select “Federation” in Metadata Type and another drop down menu called “Select Federation” will appear. From this drop menu select desired Federation. In order to create this documentation we took “InCommon” Federation as an example. Image

After selecting the “Federation Name”, a new link named “Click to select entity id” will appear. From this link Gluu Server Administrator can select all SP’s entityIDs which are InCommon affiliated. Click on this link and another new SP entityID discovery page will appear like below image.


Gluu Server Administrator can grab any SP’s entityID from “Filter” box. As for example, Gluu Server Administrator is looking for Educause entityID.


  • Public certificate: Upload the public certificate for this SP server. Please note that: public certificate’s CN (common name) MUST maintain the hostname of the SP server. If the SP has no certificate then keep this option blank and the IdP will generate a self signed certificate.

  • Released: Release required attributes. Available attributes can be grabbed from upper left corner.

  • More configuration: If the SP requires custom relying party and/or custom MetadataFilter configuration, that can be achieved using the following options:

    • Configure MetadataFilters: Click on this option and Gluu Server will allow you to configure MetadataFilters inside the GUI.
    • Configure specific Relying Party: If the server admin “checks” this option a new link will appear which allows the server administrator to modify various relying party configurations like SAML2SSO, SAML2AttributeQuery, ShibbolethSSO etc.


After adding a new Trust Relationship, the server administrator will observe a confirmation page like the one below. Please note that for testing purposes we did not provide any certificates. The IdP created both the key and certificate by itself. The image below shows a sample Trust Relationship after successful creation.

Gluu Server administrator will be able to 'search' any trust relationship from 'Trust Relationship' search box. Searching syntax can be anything affiliated with specific Trust. It's also possible to see all Trusts by just hitting 'Search' button by keeping search box blank. image