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Tutorial: Microsoft Entra SSO integration with FortiSASE

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In this tutorial, you'll learn how to integrate FortiSASE with Microsoft Entra ID. When you integrate FortiSASE with Microsoft Entra ID, you can:

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

Prerequisites

To get started, you need the following items:

  • A Microsoft Entra subscription. If you don't have a subscription, you can get a free account.
  • FortiSASE single sign-on (SSO) enabled subscription.
  • Along with Cloud Application Administrator, Application Administrator can also add or manage applications in Microsoft Entra ID. For more information, see Azure built-in roles.

Scenario description

In this tutorial, you configure and test Microsoft Entra SSO in a test environment.

  • FortiSASE supports SP initiated SSO.

  • FortiSASE supports Just In Time user provisioning.

To configure the integration of FortiSASE into Microsoft Entra ID, you need to add FortiSASE 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 Identity > Applications > Enterprise applications > New application.
  3. In the Add from the gallery section, type FortiSASE in the search box.
  4. Select FortiSASE 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, as well as walk through the SSO configuration as well. Learn more about Microsoft 365 wizards.

Configure and test Microsoft Entra SSO for FortiSASE

Configure and test Microsoft Entra SSO with FortiSASE 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 FortiSASE.

To configure and test Microsoft Entra SSO with FortiSASE, 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 FortiSASE SSO - to configure the single sign-on settings on application side.
    1. Create FortiSASE test user - to have a counterpart of B.Simon in FortiSASE that is 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 Identity > Applications > Enterprise applications > FortiSASE > 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, click the pencil icon for Basic SAML Configuration to edit the settings.

    Edit Basic SAML Configuration

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

    a. In the Identifier (Entity ID) text box, type a URL using one of the following patterns:

    User URL
    For FortiSASE VPN User SSO https://<TENANTHOSTNAME>.edge.prod.fortisase.com/remote/saml/metadata
    For FortiSASE SWG User SSO https://<TENANTHOSTNAME>.edge.prod.fortisase.com:7831/XX/YY/ZZ/saml/metadata

    b. In the Reply URL text box, type a URL using one of the following patterns:

    User URL
    For FortiSASE VPN User SSO https://<TENANTHOSTNAME>.edge.prod.fortisase.com/remote/saml/login
    For FortiSASE SWG User SSO https://<TENANTHOSTNAME>.edge.prod.fortisase.com:7831/XX/YY/ZZ/saml/login

    c. In the Sign on URL text box, type a URL using one of the following patterns:

    User URL
    For FortiSASE VPN User SSO https://<TENANTHOSTNAME>.edge.prod.fortisase.com/remote/login
    For FortiSASE SWG User SSO https://<TENANTHOSTNAME>.edge.prod.fortisase.com:7831/XX/YY/ZZ/login

    Note

    These values are not real. Update these values with the actual Identifier, Reply URL and Sign on URL. On the FortiSASE portal, go to Configuration > VPN User SSO or Configuration > SWG User SSO to find the service provider URLs. You can also refer to the patterns shown in the Basic SAML Configuration section.

  6. FortiSASE 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 the list of default attributes.

    image

  7. In addition to above, FortiSASE 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
    group user.groups
    username user.userprincipalname

  8. 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.

    The Certificate download link

  9. On the Set up FortiSASE section, copy the appropriate URL(s) based on your requirement.

    Copy configuration URLs

Create a Microsoft Entra test user

In this section, you'll create a test user called B.Simon.

  1. Sign in to the Microsoft Entra admin center as at least a User Administrator.
  2. Browse to Identity > Users > All users.
  3. Select New user > Create new user, at the top of the screen.
  4. In the User properties, follow these steps:
    1. In the Display name field, enter B.Simon.
    2. In the User principal name field, enter the username@companydomain.extension. For example, B.Simon@contoso.com.
    3. Select the Show password check box, and then write down the value that's displayed in the Password box.
    4. Select Review + create.
  5. Select Create.

Assign the Microsoft Entra test user

In this section, you'll enable B.Simon to use single sign-on by granting access to FortiSASE.

  1. Sign in to the Microsoft Entra admin center as at least a Cloud Application Administrator.
  2. Browse to Identity > Applications > Enterprise applications > FortiSASE.
  3. In the app's overview page, select Users and groups.
  4. Select Add user/group, then select Users and groups in the Add Assignment dialog.
    1. In the Users and groups dialog, select B.Simon from the Users list, then click the Select button at the bottom of the screen.
    2. If you are expecting a role to be assigned to the users, you can select it from the Select a role dropdown. If no role has been set up for this app, you see "Default Access" role selected.
    3. In the Add Assignment dialog, click the Assign button.

Configure FortiSASE SSO

  1. Log in to your FortiSASE company site as an administrator.

  2. Go to Configuration > VPN User SSO or Configuration > SWG User SSO depending on the FortiSASE mode used.

  3. In the Configure Identity Provider section, copy the following URLs and paste in the Basic SAML Configuration section.

    Screenshot that shows the Configuration

  4. In the Configure Service Provider section, perform the following steps:

    Screenshot that shows Service Provider configuration

    a. In the IdP Entity ID textbox, paste the Microsoft Entra Identifier value which you copied previously.

    b. In the IdP Single Sign-On URL textbox, paste the Login URL value which you copied previously.

    c. In the IdP Single Log-Out URL textbox, paste the Logout URL value which you copied previously.

    d. Open the downloaded Certificate (Base64) into Notepad and upload the content into the IdP Certificate textbox.

  5. Review and submit the configuration.

Create FortiSASE test user

FortiSASE supports just-in-time user provisioning, which is enabled by default. There is no action item for you in this section.

Test SSO

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

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

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

  • You can use Microsoft My Apps. When you click the FortiSASE tile in the My Apps, this will redirect to FortiSASE Sign-on URL. For more information about the My Apps, see Introduction to the My Apps.

Next steps

Once you configure FortiSASE 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.