Barracuda CloudGen Firewall Integration with AuthPoint

Deployment Overview

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

Your Barracuda CloudGen firewall can be configured to support MFA in several modes. For this integration, we set up RADIUS authentication with AuthPoint.

This integration was tested with Barracuda CloudGen firewall Vx VF10, version 7.1.3-061.

Barracuda CloudGen Firewall Authentication Data Flow with AuthPoint

AuthPoint communicates with various cloud-based services and service providers with the RADIUS protocol. This diagram shows the data flow of an MFA transaction for a Barracuda CloudGen firewall.

Before You Begin

Before you begin these procedures, make sure that:

• You have installed and configured the AuthPoint Gateway (see About Gateways)
• End-users can log in to the Barracuda CloudGen firewall Vx VF10
• A token is assigned to a user in AuthPoint

Configure Barracuda CloudGen Firewall

Configure a RADIUS Server

To use RADIUS authentication with Barracuda CloudGen firewall, you must configure a RADIUS server (the AuthPoint Gateway) in Barracuda.

1. Log in to the Barracuda CloudGen firewall with Barracuda NextGen Admin.

2. Select Configuration > Configuration Tree > Box > Infrastructure Services > Authentication Service.

3. From the navigation menu, select RADIUS Authentication.
4. Click Lock.
5. From the Configuration Mode section of the navigation menu, select Advanced View.
6. In the Radius Authentication section, from the Activate Scheme drop-down list, select Yes.
7. From the Method drop-down list, select RADIUS.
8. For Basic, click + to add a RADIUS server.

9. In the Radius Server Address text box, type the IP address of the AuthPoint Gateway (RADIUS server).
10. In the Radius Server Port text box, type the port number to use to communicate with the AuthPoint Gateway (RADIUS server). The default Gateway ports are 1812 and 1645.

    You must specify this port in AuthPoint when you bind your RADIUS client resource to the AuthPoint Gateway.

11. For Radius Server Key, type a shared secret key (password) that Barracuda and the AuthPoint Gateway (RADIUS server) will use to communicate.

    You must specify this key in AuthPoint when you create a RADIUS client resource for your Barracuda CloudGen firewall.

12. Click OK. Leave the default value for other settings.
13. Click Send Changes.
14. Click Activation Pending.

Create an SSL VPN Server

1. Select Configuration > Configuration Tree > Box > Virtual Servers > S1 > Assigned Services.
2. Right-click Assigned Services and select Create Service.
3. From the Enable Service drop-down list, select Yes.
4. Type a Service Name. The service name must be unique and contain more than six characters. You cannot change the service name later.
5. From the Software Module drop-down list, select VPN Service.
6. From the Service Availability drop-down list, select First + Second-IP.

7. Click Next.
8. Leave the default settings on the Statistics and Access Notification configuration pages.
9. Click Finish.
10. Click Activate.

Disable Port 443 for Site-to-Site and Client-to-Site VPN

1. Select Configuration > Configuration Tree > Box > Virtual Servers > S1 > Assigned Services > VPN-Service > VPN Settings.
2. Click Lock.
3. Click Click here for Server Settings.
   The Server Settings window appears.
4. For Port 443 VPN Listener, select No.

5. Click OK.
6. Click Send Changes.
7. Click Activate.

Configure SSL VPN Server Settings

1. Select Configuration > Configuration Tree > Box > Virtual Servers > S1 > Assigned Services > VPN-Service > SSL-VPN.
2. Click Lock.
3. From the Enable SSL VPN drop-down list, select Yes.
4. Next to Listen IPs, click +. This is the external IP address that the SSL VPN listens on (usually the IP address used to connect to the Internet).
5. Select the Restrict to Strong Ciphers Only check box.
6. From the Identification Type drop-down list, select Generated-Certificate.

7. From the navigation menu, select Login.
8. From the Identity Scheme drop-down list, select RADIUS.

9. Click Send Changes.
10. Click Activate.
11. From the navigation menu, select Access Control Policies.
12. Edit the Default policy.
13. Next to Authentication Schemes, click + and add RADIUS.

14. Click OK.
15. Click Send Changes.
16. Click Activate.

Configure AuthPoint

Before AuthPoint can receive authentication requests from Barracuda, you must specify Barracuda 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 Barracuda resource and you must bind the Barracuda 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 friendly name for this resource.
4. In the RADIUS client trusted IP or FQDN text box, type the IP address or the fully qualified domain name of your RADIUS client.
5. In the Shared Secret text box, type the shared secret that you configured for your Barracuda Network Security Appliance.
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 Barracuda 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 client resource(s) to the Gateway in the AuthPoint web UI. The Gateway functions as a RADIUS server.

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

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 the Integration

To test the integration of AuthPoint and configuration of your Barracuda CloudGen firewall, you can authenticate with a mobile token on your mobile device. For RADIUS resources, you can choose one-time password (OTP) or push.

In this example, we show the one-time password authentication method.

1. Log in to the Barracuda CloudGen firewall with Barracuda NextGen Admin.
2. Select Configuration > Configuration Tree > Box > Virtual Servers > S1 > Assigned Services > VPN-Service > SSL-VPN > Native Apps.
3. Next to Nativ Apps, click + and add an RDP App.

4. Run the CudaLaunch client application. You can download this application from the Barracuda NG Download Portal.
5. Type the external IP address of the Barracuda CloudGen firewall.
6. Click Connect.

7. Click Connect.
8. In the Server certificate error dialog box, click Yes.

9. In the Username text box, type your AuthPoint user name.
10. In the RADIUS Password text box, type your AuthPoint password and the OTP shown for your token in the AuthPoint app. Do not add a space between your password and your OTP.
    Example: If your AuthPoint password is Password and your OTP is 123 789, then you type Password123789.
    
11. Click Log in.

12. Click RDP to run this app.

13. Type your RDP computer user name and password to log on.