Microsoft Entra SSO integration with Illumio SSO

In this article, you learn how to integrate Illumio SSO with Microsoft Entra ID. Illumio SSO app provides a simple, convenient, and secure way for organizations to manage user access to illumio PCE. When you integrate Illumio SSO with Microsoft Entra ID, you can:

• Control in Microsoft Entra ID who has access to Illumio SSO.
• Enable your users to be automatically signed-in to Illumio SSO with their Microsoft Entra accounts.
• Manage your accounts in one central location.

You'll configure and test Microsoft Entra single sign-on for Illumio SSO in a test environment. Illumio SSO supports both SP and IDP initiated single sign-on.

Prerequisites

To integrate Microsoft Entra ID with Illumio SSO, you need:

• A Microsoft Entra user account. If you don't already have one, you can Create an account for free.
• One of the following roles: Global Administrator, Cloud Application Administrator, Application Administrator, or owner of the service principal.
• A Microsoft Entra subscription. If you don't have a subscription, you can get a free account.
• Illumio SSO single sign-on (SSO) enabled subscription.

Add application and assign a test user

Before you begin the process of configuring single sign-on, you need to add the Illumio SSO application from the Microsoft Entra gallery. You need a test user account to assign to the application and test the single sign-on configuration.

Add Illumio SSO from the Microsoft Entra gallery

Add Illumio SSO from the Microsoft Entra application gallery to configure single sign-on with Illumio SSO. For more information on how to add application from the gallery, see the Quickstart: Add application from the gallery.

Create and assign Microsoft Entra test user

Follow the guidelines in the create and assign a user account article to create a test user account called B.Simon.

Alternatively, you can also use the Enterprise App Configuration Wizard. In this wizard, you can add an application to your tenant, add users/groups to the app, and assign roles. The wizard also provides a link to the single sign-on configuration pane. Learn more about Microsoft 365 wizards..

Configure Microsoft Entra SSO

Complete the following steps to enable Microsoft Entra single sign-on.

1. Sign in to the Microsoft Entra admin center as at least a Cloud Application Administrator.

2. Browse to Identity > Applications > Enterprise applications > Illumio SSO > Single sign-on.

3. On the Select a single sign-on method page, select SAML.

4. On the Set up single sign-on with SAML page, select the pencil icon for Basic SAML Configuration to edit the settings.

   

5. On the Basic SAML Configuration section, perform the following steps:

   a. In the Identifier textbox, type a URL using the following pattern: https://<DOMAIN>/login

   b. In the Reply URL textbox, type a URL using the following pattern: https://<DOMAIN>/login/acs/<ID>

6. If you wish to configure the application in SP initiated mode, then perform the following step:

   In the Sign on URL textbox, type a URL using the following pattern: https://<DOMAIN>/login

   Note

   These values are not real. Update these values with the actual Identifier, Reply URL and Sign on URL. Contact Illumio SSO Client support team to get these values. You can also refer to the patterns shown in the Basic SAML Configuration section.

7. Your Illumio SSO application expects the SAML assertions in a specific format, which requires you to add custom attribute mappings to your SAML token attributes configuration. The following screenshot shows an example for this. The default value of Unique User Identifier is user.userprincipalname but Illumio SSO expects this to be mapped with the user's email address. For that you can use user.mail attribute from the list or use the appropriate attribute value based on your organization configuration.

   

8. In addition to above, Illumio SSO application expects few more attributes to be passed back in SAML response, which are shown below. These attributes are also pre populated but you can review them as per your requirements.

   Name	Source Attribute
   User.MemberOf	user.assignedroles

9. On the Set up single sign-on with SAML page, in the SAML Signing Certificate section, find Certificate (Base64) and select Download to download the certificate and save it on your computer.

   

10. On the Set up Illumio SSO section, copy the appropriate URL(s) based on your requirement.

    

Configure Illumio SSO

To configure single sign-on on Illumio SSO side, you need to send the downloaded Certificate (Base64) and appropriate copied URLs from the application configuration to Illumio SSO support team. They set this setting to have the SAML SSO connection set properly on both sides.

Create Illumio SSO test user

In this section, you create a user called Britta Simon at Illumio SSO. Work with Illumio SSO support team to add the users in the Illumio SSO platform. Users must be created and activated before you use single sign-on.

Test SSO

In this section, you test your Microsoft Entra single sign-on configuration with following options.

SP initiated:

1. Click on Test this application, this will redirect to Illumio SSO Sign-on URL where you can initiate the login flow.

2. Go to Illumio SSO Sign-on URL directly and initiate the login flow from there.

IDP initiated:

1. Click on Test this application, and you should be automatically signed in to the Illumio SSO for which you set up the SSO.

2. You can also use Microsoft My Apps to test the application in any mode. When you click the Illumio SSO tile in the My Apps, if configured in SP mode you would be redirected to the application sign-on page for initiating the login flow and if configured in IDP mode, you should be automatically signed in to the Illumio SSO for which you set up the SSO. For more information, see Microsoft Entra My Apps.

Additional resources

• What is single sign-on with Microsoft Entra ID?
• Plan a single sign-on deployment.

Next steps

Once you configure Illumio SSO you can enforce session control, which protects exfiltration and infiltration of your organization’s sensitive data in real time. Session control extends from Conditional Access. Learn how to enforce session control with Microsoft Cloud App Security.