Configure TAS for Single sign-on with Microsoft Entra ID

In this article, you learn how to integrate TAS with Microsoft Entra ID. When you integrate TAS with Microsoft Entra ID, you can:

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

Prerequisites

The scenario outlined in this article assumes that you already have the following prerequisites:

• A Microsoft Entra user account with an active subscription. If you don't already have one, you can Create an account for free.
• One of the following roles:
  • Application Administrator
  • Cloud Application Administrator
  • Application Owner.

• TAS single sign-on (SSO) enabled subscription.

Scenario description

In this article, you configure and test Microsoft Entra single sign-on in a test environment.

• TAS supports SP and IDP initiated SSO.

Add TAS from the gallery

To configure the integration of TAS into Microsoft Entra ID, you need to add TAS from the gallery to your list of managed SaaS apps.

1. Sign in to the Microsoft Entra admin center as at least a Cloud Application Administrator.
2. Browse to Entra ID > Enterprise apps > New application.
3. In the Add from the gallery section, type TAS in the search box.
4. Select TAS from results panel and then add the app. Wait a few seconds while the app is added to your tenant.

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, assign roles, and walk through the SSO configuration as well. Learn more about Microsoft 365 wizards.

Configure and test Microsoft Entra SSO for TAS

Configure and test Microsoft Entra SSO with TAS using a test user called B.Simon. For SSO to work, you need to establish a link relationship between a Microsoft Entra user and the related user in TAS.

To configure and test Microsoft Entra SSO with TAS, perform the following steps:

1. Configure Microsoft Entra SSO - to enable your users to use this feature.
   1. Create a Microsoft Entra test user - to test Microsoft Entra single sign-on with B.Simon.
   2. Assign the Microsoft Entra test user - to enable B.Simon to use Microsoft Entra single sign-on.
2. Configure TAS SSO - to configure the single sign-on settings on application side.
   1. Create TAS test user - to have a counterpart of B.Simon in TAS that's linked to the Microsoft Entra representation of user.
3. Test SSO - to verify whether the configuration works.

Configure Microsoft Entra SSO

Follow these steps to enable Microsoft Entra SSO.

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

2. Browse to Entra ID > Enterprise apps > TAS > 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, If you wish to configure the application in IDP initiated mode, perform the following steps:

   a. In the Identifier text box, type a URL using the following pattern: https://taseu.combtas.com/<DOMAIN>

   b. In the Reply URL text box, type a URL using the following pattern: https://taseu.combtas.com/<ENVIRONMENT_NAME>/AssertionService.aspx

6. Select Set additional URLs and perform the following step if you wish to configure the application in SP initiated mode:

   In the Sign-on URL text box, type a URL using the following pattern: https://taseu.combtas.com/<DOMAIN>

   Note

   These values aren't real. You update these with the actual Identifier, Reply URL and Sign-on URL which is explained later in the article. You can also refer to the patterns shown in the Basic SAML Configuration section.

7. On the Set up Single Sign-On with SAML page, in the SAML Signing Certificate section, select Download to download the Certificate (Base64) from the given options as per your requirement and save it on your computer.

   

8. On the Set up TAS section, copy the appropriate URL(s) as per your requirement.

   

Create and assign Microsoft Entra test user

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

Configure TAS SSO

1. In a different web browser window, login to TAS as an Administrator.

2. On the left side of menu, select Settings and navigate to Administrator and then select Manage Single sign on.

   

3. On the Manage Single sign on page, perform the following steps:

   

   a. In the Name textbox, type your environment name.

   b. Select SAML2 as Authentication Type.

   c. In the Enter URL textbox, paste the value of Login URL which you copied previously.

   d. In Notepad, open the base-64 encoded certificate that you downloaded, copy its content, and then paste it into the Enter Certification box.

   e. In the Enter New IP textbox, type the IP Address.

   Note

   Contact TAS support team to get the IP Address.

   f. Copy the Single Sign On URL and paste it into the identifier (Entity ID) and Sign on URL textbox of Basic SAML Configuration in Azure portal. Please note that the URL is case sensitive and must end with a slash (/).

   g. Copy the Assertion Service URL in the setup page and paste it into the Reply URL textbox of Basic SAML Configuration in Azure portal.

   h. Select Insert SSO row.

Create TAS test user

In this section, you create a user called Britta Simon in TAS. Work with TAS support team to add the users in the TAS 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:

• Select Test this application, this option redirects to TAS Sign on URL where you can initiate the login flow.

• Go to TAS Sign-on URL directly and initiate the login flow from there.

IDP initiated:

• Select Test this application, and you should be automatically signed in to the TAS for which you set up the SSO.

You can also use Microsoft My Apps to test the application in any mode. When you select the TAS 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 TAS for which you set up the SSO. For more information about the My Apps, see Introduction to the My Apps.

Related content

Once you configure TAS 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 Defender for Cloud Apps.