Tutorial: Azure Active Directory single sign-on integration with Citrix ADC SAML Connector for Azure AD (Kerberos-based authentication)

In this tutorial, you'll learn how to integrate Citrix ADC SAML Connector for Azure AD with Azure Active Directory (Azure AD). When you integrate Citrix ADC SAML Connector for Azure AD with Azure AD, you can:

  • Control in Azure AD who has access to Citrix ADC SAML Connector for Azure AD.
  • Enable your users to be automatically signed in to Citrix ADC SAML Connector for Azure AD with their Azure AD accounts.
  • Manage your accounts in one central location - the Azure portal.

Prerequisites

To get started, you need the following items:

  • An Azure AD subscription. If you don't have a subscription, you can get a free account.
  • Citrix ADC SAML Connector for Azure AD single sign-on (SSO) enabled subscription.

Scenario description

In this tutorial, you configure and test Azure AD SSO in a test environment. The tutorial includes these scenarios:

To integrate Citrix ADC SAML Connector for Azure AD with Azure AD, first add Citrix ADC SAML Connector for Azure AD to your list of managed SaaS apps from the gallery:

  1. Sign in to the Azure portal using either a work or school account, or a personal Microsoft account.

  2. In the left menu, select Azure Active Directory.

  3. Go to Enterprise Applications, and then select All Applications.

  4. To add a new application, select New application.

  5. In the Add from the gallery section, enter Citrix ADC SAML Connector for Azure AD in the search box.

  6. In the results, select Citrix ADC SAML Connector for Azure AD, and then add the app. Wait a few seconds while the app is added to your tenant.

Configure and test Azure AD SSO for Citrix ADC SAML Connector for Azure AD

Configure and test Azure AD SSO with Citrix ADC SAML Connector for Azure AD by using a test user called B.Simon. For SSO to work, you need to establish a link relationship between an Azure AD user and the related user in Citrix ADC SAML Connector for Azure AD.

To configure and test Azure AD SSO with Citrix ADC SAML Connector for Azure AD, perform the following steps:

  1. Configure Azure AD SSO - to enable your users to use this feature.

    1. Create an Azure AD test user - to test Azure AD SSO with B.Simon.

    2. Assign the Azure AD test user - to enable B.Simon to use Azure AD SSO.

  2. Configure Citrix ADC SAML Connector for Azure AD SSO - to configure the SSO settings on the application side.

    1. Create Citrix ADC SAML Connector for Azure AD test user - to have a counterpart of B.Simon in Citrix ADC SAML Connector for Azure AD that is linked to the Azure AD representation of the user.
  3. Test SSO - to verify whether the configuration works.

Configure Azure AD SSO

To enable Azure AD SSO by using the Azure portal, complete these steps:

  1. In the Azure portal, on the Citrix ADC SAML Connector for Azure AD application integration pane, under Manage, select Single sign-on.

  2. On the Select a single sign-on method pane, select SAML.

  3. On the Set up Single Sign-On with SAML pane, select the pencil icon for Basic SAML Configuration to edit the settings.

    Edit Basic SAML Configuration

  4. In the Basic SAML Configuration section, to configure the application in IDP-initiated mode, perform the following steps:

    1. In the Identifier text box, enter a URL that has the following pattern: https://<YOUR_FQDN>

    2. In the Reply URL text box, enter a URL that has the following pattern: http(s)://<YOUR_FQDN>.of.vserver/cgi/samlauth

  5. To configure the application in SP-initiated mode, select Set additional URLs and perform the following step:

    • In the Sign-on URL text box, enter a URL that has the following pattern: https://<YOUR_FQDN>/CitrixAuthService/AuthService.asmx

    Note

    • The URLs that are used in this section aren't real values. Update these values with the actual values for Identifier, Reply URL, and Sign-on URL. Contact the Citrix ADC SAML Connector for Azure AD client support team to get these values. You can also refer to the patterns shown in the Basic SAML Configuration section in the Azure portal.
    • To set up SSO, the URLs must be accessible from public websites. You must enable the firewall or other security settings on the Citrix ADC SAML Connector for Azure AD side to enble Azure AD to post the token at the configured URL.
  6. On the Set up Single Sign-On with SAML pane, in the SAML Signing Certificate section, for App Federation Metadata Url, copy the URL and save it in Notepad.

    The Certificate download link

  7. In the Set up Citrix ADC SAML Connector for Azure AD section, copy the relevant URLs based on your requirements.

    Copy configuration URLs

Create an Azure AD test user

In this section, you create a test user in the Azure portal called B.Simon.

  1. On the left menu in the Azure portal, select Azure Active Directory, select Users, and then select All users.

  2. Select New user at the top of the pane.

  3. In User properties, complete these steps:

    1. For Name, enter B.Simon.

    2. For User name, enter username@companydomain.extension. For example, B.Simon@contoso.com.

    3. Select the Show password check box, and then write down or copy the value that's displayed in Password.

    4. Select Create.

Assign the Azure AD test user

In this section, you enable the user B.Simon to use Azure SSO by granting the user access to Citrix ADC SAML Connector for Azure AD.

  1. In the Azure portal, select Enterprise Applications, and then select All applications.

  2. In the applications list, select Citrix ADC SAML Connector for Azure AD.

  3. On the app overview, under Manage, select Users and groups.

  4. Select Add user. Then, in the Add Assignment dialog box, select Users and groups.

  5. In the Users and groups dialog box, select B.Simon from the Users list. Choose Select.

  6. 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.

  7. In the Add Assignment dialog box, select Assign.

Configure Citrix ADC SAML Connector for Azure AD SSO

Select a link for steps for the kind of authentication you want to configure:

Publish the web server

To create a virtual server:

  1. Select Traffic Management > Load Balancing > Services.

  2. Select Add.

    Citrix ADC SAML Connector for Azure AD configuration - Services pane

  3. Set the following values for the web server that's running the applications:

    • Service Name
    • Server IP/ Existing Server
    • Protocol
    • Port

Configure the load balancer

To configure the load balancer:

  1. Go to Traffic Management > Load Balancing > Virtual Servers.

  2. Select Add.

  3. Set the following values as described in the following screenshot:

    • Name
    • Protocol
    • IP Address
    • Port
  4. Select OK.

    Citrix ADC SAML Connector for Azure AD configuration - Basic Settings pane

Bind the virtual server

To bind the load balancer with the virtual server:

  1. In the Services and Service Groups pane, select No Load Balancing Virtual Server Service Binding.

    Citrix ADC SAML Connector for Azure AD configuration - Load Balancing Virtual Server Service Binding pane

  2. Verify the settings as shown in the following screenshot, and then select Close.

    Citrix ADC SAML Connector for Azure AD configuration - Verify the virtual server services binding

Bind the certificate

To publish this service as TLS, bind the server certificate, and then test your application:

  1. Under Certificate, select No Server Certificate.

    Citrix ADC SAML Connector for Azure AD configuration - Server Certificate pane

  2. Verify the settings as shown in the following screenshot, and then select Close.

    Citrix ADC SAML Connector for Azure AD configuration - Verify the certificate

Citrix ADC SAML Connector for Azure AD SAML profile

To configure the Citrix ADC SAML Connector for Azure AD SAML profile, complete the following sections.

Create an authentication policy

To create an authentication policy:

  1. Go to Security > AAA – Application Traffic > Policies > Authentication > Authentication Policies.

  2. Select Add.

  3. On the Create Authentication Policy pane, enter or select the following values:

    • Name: Enter a name for your authentication policy.
    • Action: Enter SAML, and then select Add.
    • Expression: Enter true.

    Citrix ADC SAML Connector for Azure AD configuration - Create Authentication Policy pane

  4. Select Create.

Create an authentication SAML server

To create an authentication SAML server, go to the Create Authentication SAML Server pane, and then complete the following steps:

  1. For Name, enter a name for the authentication SAML server.

  2. Under Export SAML Metadata:

    1. Select the Import Metadata check box.

    2. Enter the federation metadata URL from the Azure SAML UI that you copied earlier.

  3. For Issuer Name, enter the relevant URL.

  4. Select Create.

Citrix ADC SAML Connector for Azure AD configuration - Create Authentication SAML Server pane

Create an authentication virtual server

To create an authentication virtual server:

  1. Go to Security > AAA - Application Traffic > Policies > Authentication > Authentication Virtual Servers.

  2. Select Add, and then complete the following steps:

    1. For Name, enter a name for the authentication virtual server.

    2. Select the Non-Addressable check box.

    3. For Protocol, select SSL.

    4. Select OK.

  3. Select Continue.

Configure the authentication virtual server to use Azure AD

Modify two sections for the authentication virtual server:

  1. On the Advanced Authentication Policies pane, select No Authentication Policy.

    Citrix ADC SAML Connector for Azure AD configuration - Advanced Authentication Policies pane

  2. On the Policy Binding pane, select the authentication policy, and then select Bind.

    Citrix ADC SAML Connector for Azure AD configuration - Policy Binding pane

  3. On the Form Based Virtual Servers pane, select No Load Balancing Virtual Server.

    Citrix ADC SAML Connector for Azure AD configuration - Form Based Virtual Servers pane

  4. For Authentication FQDN, enter a fully qualified domain name (FQDN) (required).

  5. Select the load balancing virtual server that you want to protect with Azure AD authentication.

  6. Select Bind.

    Citrix ADC SAML Connector for Azure AD configuration - Load Balancing Virtual Server Binding pane

    Note

    Be sure to select Done on the Authentication Virtual Server Configuration pane.

  7. To verify your changes, in a browser, go to the application URL. You should see your tenant sign-in page instead of the unauthenticated access that you would have seen previously.

    Citrix ADC SAML Connector for Azure AD configuration - A sign-in page in a web browser

Configure Citrix ADC SAML Connector for Azure AD SSO for Kerberos-based authentication

Create a Kerberos delegation account for Citrix ADC SAML Connector for Azure AD

  1. Create a user account (in this example, we use AppDelegation).

    Citrix ADC SAML Connector for Azure AD configuration - Properties pane

  2. Set up a HOST SPN for this account.

    Example: setspn -S HOST/AppDelegation.IDENTT.WORK identt\appdelegation

    In this example:

    • IDENTT.WORK is the domain FQDN.
    • identt is the domain NetBIOS name.
    • appdelegation is the delegation user account name.
  3. Configure delegation for the web server as shown in the following screenshot:

    Citrix ADC SAML Connector for Azure AD configuration - Delegation under Properties pane

    Note

    In the screenshot example, the internal web server name running the Windows Integrated Authentication (WIA) site is CWEB2.

Citrix ADC SAML Connector for Azure AD AAA KCD (Kerberos delegation accounts)

To configure the Citrix ADC SAML Connector for Azure AD AAA KCD account:

  1. Go to Citrix Gateway > AAA KCD (Kerberos Constrained Delegation) Accounts.

  2. Select Add, and then enter or select the following values:

    • Name: Enter a name for the KCD account.

    • Realm: Enter the domain and extension in uppercase.

    • Service SPN: http/<host/fqdn>@<DOMAIN.COM>.

      Note

      @DOMAIN.COM is required and must be uppercase. Example: http/cweb2@IDENTT.WORK.

    • Delegated User: Enter the delegated user name.

    • Select the Password for Delegated User check box, and enter and confirm a password.

  3. Select OK.

    Citrix ADC SAML Connector for Azure AD configuration - Configure KCD Account pane

Citrix traffic policy and traffic profile

To configure the Citrix traffic policy and traffic profile:

  1. Go to Security > AAA - Application Traffic > Policies > Traffic Policies, Profiles and Form SSO ProfilesTraffic Policies.

  2. Select Traffic Profiles.

  3. Select Add.

  4. To configure a traffic profile, enter or select the following values.

    • Name: Enter a name for the traffic profile.

    • Single Sign-on: Select ON.

    • KCD Account: Select the KCD account you created in the preceding section.

  5. Select OK.

    Citrix ADC SAML Connector for Azure AD configuration - Configure Traffic Profile pane

  6. Select Traffic Policy.

  7. Select Add.

  8. To configure a traffic policy, enter or select the following values:

    • Name: Enter a name for the traffic policy.

    • Profile: Select the traffic profile you created in the preceding section.

    • Expression: Enter true.

  9. Select OK.

    Citrix ADC SAML Connector for Azure AD configuration - Configure Traffic Policy pane

Bind a traffic policy to a virtual server in Citrix

To bind a traffic policy to a virtual server by using the GUI:

  1. Go to Traffic Management > Load Balancing > Virtual Servers.

  2. In the list of virtual servers, select the virtual server to which you want to bind the rewrite policy, and then select Open.

  3. On the Load Balancing Virtual Server pane, under Advanced Settings, select Policies. All policies that are configured for your NetScaler instance appear in the list.

    Citrix ADC SAML Connector for Azure AD configuration - Load Balancing Virtual Server pane

    Citrix ADC SAML Connector for Azure AD configuration - Policies dialog box

  4. Select the check box next to the name of the policy you want to bind to this virtual server.

    Citrix ADC SAML Connector for Azure AD configuration - Load Balancing Virtual Server Traffic Policy Binding pane

  5. In the Choose Type dialog box:

    1. For Choose Policy, select Traffic.

    2. For Choose Type, select Request.

    Citrix ADC SAML Connector for Azure AD configuration - Choose Type pane

  6. When the policy is bound, select Done.

    Citrix ADC SAML Connector for Azure AD configuration - Policies pane

  7. Test the binding by using the WIA website.

    Citrix ADC SAML Connector for Azure AD configuration - A test page in a web browser

Create Citrix ADC SAML Connector for Azure AD test user

In this section, a user called B.Simon is created in Citrix ADC SAML Connector for Azure AD. Citrix ADC SAML Connector for Azure AD supports just-in-time user provisioning, which is enabled by default. There is no action for you to take in this section. If a user doesn't already exist in Citrix ADC SAML Connector for Azure AD, a new one is created after authentication.

Note

If you need to create a user manually, contact the Citrix ADC SAML Connector for Azure AD client support team.

Test SSO

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

  • Click on Test this application in Azure portal. This will redirect to Citrix ADC SAML Connector for Azure AD Sign-on URL where you can initiate the login flow.

  • Go to Citrix ADC SAML Connector for Azure AD Sign-on URL directly and initiate the login flow from there.

  • You can use Microsoft My Apps. When you click the Citrix ADC SAML Connector for Azure AD tile in the My Apps, this will redirect to Citrix ADC SAML Connector for Azure AD Sign-on URL. For more information about the My Apps, see Introduction to the My Apps.

Next steps

Once you configure Citrix ADC SAML Connector for Azure AD 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.