Cisco ISE RADIUS Integration with AuthPoint

Deployment Overview

This document describes how to set up multi-factor authentication (MFA) for Cisco® ISE with AuthPoint as an identity provider. Cisco ISE must already be configured and deployed before you set up MFA with AuthPoint.

Cisco ISE can be configured to support MFA in several modes. For this integration, we set up RADIUS with AuthPoint.

Cisco ISE Authentication Data Flow with AuthPoint

AuthPoint communicates with various cloud-based services and service providers with the RADIUS protocol. This diagram shows an overview of the configuration required for RADIUS authentication.

Before You Begin

Before you begin these procedures, make sure that:

• You have finished the initialization configure of Cisco ISE
• A token is assigned to a user in AuthPoint

We recommend that you install the AuthPoint Gateway before you begin. For detailed steps, see About Gateways.

Configure Cisco ISE

1. Log in to your Cisco ISE server.
2. Click the menu icon in the upper left corner.

3. Select Administration > Identity Management > External Identity Sources.

4. Select RADIUS Token. Click Add.

5. In the Name text box, type a name for the RADIUS token identity source. In our example, we name the identity source AuthPointGW.

6. Select the Connection tab.
7. In the Primary Server section, in the Host IP text box, type the IP address of the AuthPoint Gateway. In our example, the IP address is 192.168.1.100.
8. In the Shared Secret text box, type a shared secret key to use for communication with the RADIUS server (AuthPoint Gateway). You must use this same shared secret when you configure a RADIUS resource in AuthPoint in the Add a RADIUS Resource in AuthPoint section.
9. Leave the default value for other settings.

10. Click Submit to save your RADIUS token identity source.
11. Click the menu icon in the upper left corner.
12. Select Administration > System > Admin Access > Authentication.
13. Select the Authentication Method tab.
14. For Authentication Type, select Password Based.
15. From the Identity Source drop-down list, select the RADIUS token identity source you created.

16. Click Save.

Configure AuthPoint

Before AuthPoint can receive authentication requests from Cisco ISE, you must specify Cisco ISE as a RADIUS client resource In AuthPoint, resources are the applications and services that your users connect to. in AuthPoint. You must also create a Zero Trust authentication policy Authentication policies specify which resources users can authenticate to and which authentication methods they can use (Push, QR code, and OTP). for the Cisco ISE resource and you must bind the Cisco ISE resource to the AuthPoint Gateway.

Add a RADIUS Resource in AuthPoint

From the AuthPoint management UI:

1. From the navigation menu, select Resources. Click Add Resource.
   The Add Resource page opens.

2. From the Type drop-down list, select RADIUS Client.
   Additional fields appear.

3. In the Name text box, type a name for this resource.
4. In the RADIUS client trusted IP or FQDN text box, type the Cisco ISE IP address.
5. In the Shared Secret text box, type the shared secret that you configured for the Cisco ISE in the previous section.

6. Click Save.

Add a Group in AuthPoint

You must have at least one user group in AuthPoint to configure MFA. If you already have a group, you do not have to add another group.

To add a WatchGuard Cloud-hosted group to the WatchGuard Cloud Directory:

1. Go to Configure > Directories and Domain Services.
2. Click the WatchGuard Cloud Directory domain name. If you have not yet added the WatchGuard Cloud Directory, click Add Authentication Domain and select the WatchGuard Cloud Directory.
   The New Group page appears.

3. In the Groups tab, click Add Group.
4. In the Group Name text box, type a descriptive name for the group.
5. (Optional) In the Description text box, type a description of the group.

6. Click Save.
   Your group is added to the WatchGuard Cloud Directory and to AuthPoint.

Add a Zero Trust Authentication Policy

Zero Trust policies specify which resources users can authenticate to and which authentication methods they can use.

You must have at least one Zero Trust authentication policy that includes the Cisco ISE resource. If you already have Zero Trust authentication policies, you do not have to create a new authentication policy. You can add this resource to your existing authentication policies.

Users that do not have an authentication policy for a specific resource cannot authenticate to log in to that resource.

To configure a Zero Trust authentication policy:

1. Go to Configure > Zero Trust. If you have a Service Provider account, you must select an account from Account Manager.
2. Click Add Policy.
3. Type a name for this policy.
4. In the Target section, from the Content drop-down list, select which groups this policy applies to. You can make multiple selections to add multiple groups.
5. In the Resources section, select the AuthPoint resources this policy applies to.
6. In the Conditions section, select the conditions that apply to this policy. When you add a condition to an authentication policy, the policy applies only to user authentications that match the policy and the policy conditions. For example, if you add a time schedule to a policy, the policy only applies to user authentications that occur within that time schedule. Users who only have a policy that includes a time schedule do not get access to the resource when they authenticate outside of the allowed times (because they do not have a policy that applies, not because authentication is denied). For more information, go to About Zero Trust Conditions

   For RADIUS authentication, policies that have a Network Location do not apply because AuthPoint does not have the IP address of the user.

   1. (Optional) To create a new condition, click Add New Condition. After you create a new condition, you must still add the condition to the policy.
   2. From the Type drop-down list, select the type of condition to add to the policy.
   3. From the Name drop-down list, select which condition of the chosen type to add to the policy.
   4. To add more conditions, repeat Step 6.

      If you add conditions to a policy, we recommend that you create a second policy for the same groups and resources without the conditions. Assign a higher priority to the policy with the policy objects. For more information about priority, go to About Zero Trust Policy Precedence.

7. In the Action section, select an option to specify whether to allow or deny authentications for the resources in this policy. In our example, we want to allow authentications.
   • Allow — Allow user groups in this policy access to the resources associated with this policy.
• Deny — Deny authentications when users in the groups associated with this policy try to authenticate to the resources associated with this policy.
8. If you allow access with this policy, select the check box for each authentication option users can select when they authenticate to resources in this policy with MFA.

   If you enable the push and OTP authentication methods for a policy, RADIUS client resources associated with that policy use push notifications to authenticate users.

   QR code authentication is not supported for RADIUS client resources.

   For RADIUS authentication, you append your OTP to the end of your password. Do not add a space. For example, password112233.

9. Click Save.
   Your policy is created and added to the end of the policy list.
10. Review the order of your policies and adjust as necessary. For more information about priority, go to About Zero Trust Policy Precedence.

Bind the RADIUS Resource to a Gateway

To use RADIUS authentication with AuthPoint, you must have the AuthPoint Gateway installed on your corporate network and you must assign your RADIUS resources to the Gateway in the AuthPoint management UI. The Gateway functions as a RADIUS server.

If you have not already configured and installed the AuthPoint Gateway, see About Gateways.

To assign your RADIUS resources to the Gateway:

1. From the navigation menu, select Gateway.
2. Select the Name of the Gateway.

3. From the RADIUS section, in the Port text box, type the port number used to communicate with the Gateway. The default ports are 1812 and 1645.

   If you already have a RADIUS server installed that uses port 1812 or 1645, you must use a different port for the AuthPoint Gateway.

4. From the Select a RADIUS Resource drop-down list, select your RADIUS client resource.
5. Click Save.

Add Users to AuthPoint

Before you assign users to a group, you must add the users to AuthPoint. There are two ways to add AuthPoint user accounts:

• Sync users from an external user database
• Add WatchGuard Cloud-hosted AuthPoint users

Each user must be a member of a group. You must add at least one group before you can add users to AuthPoint.

Test AuthPoint MFA

To test MFA with Cisco ISE, you can authenticate with the mobile token on your mobile device. For RADIUS authentication, you can authenticate with a push notification or a one-time password (OTP).

In this example, we show the push authentication method (users receive a push notification in the mobile app that they must approve to authenticate).

If you want to use the OTP authentication method, the authentication policy for your AuthPoint resource must not allow the push authentication option. If you enable the push and OTP authentication methods for a policy, RADIUS resources associated with the policy use push notifications to authenticate users.

1. In a web browser, go to the Cisco ISE URL.
2. From the Identity Source drop-down list, select the RADIUS token identity source you created in the Configure Cisco ISE section.

3. In the Username text box, type your AuthPoint user name.
4. In the Password text box, type your AuthPoint password.
5. Click Login.
6. Approve the authentication request that is sent to your mobile device.
   You are logged in successfully.