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.

Diagram of the data flow for an AuthPoint MFA login.

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.

login page

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

Authentication Service

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

Radius Server config

  1. In the Radius Server Address text box, type the IP address of the AuthPoint Gateway (RADIUS server).
  2. 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.

  3. 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.

Authentication Service

  1. Click OK. Leave the default value for other settings.
  2. Click Send Changes.
  3. Click Activation Pending.

Radius Server config

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.

Screenshot of the Create Service page.

  1. Click Next.
  2. Leave the default settings on the Statistics and Access Notification configuration pages.
  3. Click Finish.
  4. Click Activate.

VPN Service done

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.

Disable Port 443

  1. Click OK.
  2. Click Send Changes.
  3. Click Activate.

Disable Port 443

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.

SSL VPN Server Settings

  1. From the navigation menu, select Login.
  2. From the Identity Scheme drop-down list, select RADIUS.

SSL VPN Server Settings

  1. Click Send Changes.
  2. Click Activate.
  3. From the navigation menu, select Access Control Policies.
  4. Edit the Default policy.
  5. Next to Authentication Schemes, click + and add RADIUS.

SSL VPN Server Settings

  1. Click OK.
  2. Click Send Changes.
  3. Click Activate.

Configure AuthPoint

Before AuthPoint can receive authentication requests from Barracuda, you must specify Barracuda as a RADIUS client resource in AuthPoint. You must also create an authentication policy 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.

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

  1. In the Name text box, type a friendly name for this resource.
  2. In the RADIUS client trusted IP or FQDN text box, type the IP address or the fully qualified domain name of your RADIUS client.
  3. In the Shared Secret text box, type the shared secret that you configured for your Barracuda Network Security Appliance.
  4. 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 group to AuthPoint:

  1. From the navigation menu, select Groups.
  2. Click Add Group.
    The New Group page appears.

Screenshot that shows the Groups page.

  1. In the Name text box, type a descriptive name for the group.
  2. (Optional) In the Description text box, type a description of the group.

Screen shot of the New Group page.

  1. Click Save.
    Your group is listed on the Groups page.

Screenshot of the Save button on the New Group page.

Add an Authentication Policy to AuthPoint

Authentication policies specify which resources users can authenticate to and which authentication methods they can use (Push, QR code, and OTP).

You must have at least one authentication policy in AuthPoint that includes the Barracuda resource. If you already have 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 an authentication policy:

  1. From the navigation menu, select Authentication Policies.
    The Authentication Policies page opens.

Screenshot of the Add Policy button on the Authentication Policies page.

  1. Click Add Policy.
    The Add Policy page opens.

  1. In the Name text box, type a name for this policy.
  2. From the Select the Authentication Options drop-down list, select Authentication Options, then select which authentication options users can choose from when they authenticate.

    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.

  3. From the Groups drop-down list, select which groups this policy applies to. You can select more than one group. To configure this policy to apply to all groups, select All Groups.
  4. From the Resources drop-down list, select the resource that you created in the previous section. If you want this policy to apply to additional resources, select each resource this policy applies to. To configure this policy to apply to all resources, select All Resources.

Screenshot of the Add Policy page with the groups and resources selected

  1. (Optional) If you have configured policy objects such as a Network Location, select which policy objects apply to this policy. When you add a policy object to a policy, the policy only applies to user authentications that match the conditions of the policy objects. For example, if you add a Network Location to a policy, the policy only applies to user authentications that come from that Network Location. Users who only have a policy that includes a Network Location do not get access to the resource when they authenticate outside of that Network Location (because they do not have a policy that applies, not because authentication is denied).

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

    If you configure policy objects, we recommend that you create a second policy for the same groups and resources without the policy objects. The policy with the policy objects should have a higher priority.

Screenshot of the Policy Objects drop-down list.

  1. Click Save.
    Your policy is created and added to the end of the policy list.

    When you create a new policy, we recommend that you review the order of your policies. AuthPoint always adds new policies to the end of the policy list.

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 local 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.

To import users from Active Directory, Microsoft Entra ID, or an LDAP database, you must add an external identity in the AuthPoint management UI. External identities connect to user databases to get user account information and validate passwords.

  • To sync users from Active Directory or an LDAP database, you must add an LDAP external identity
  • To sync users from Microsoft Entra ID, you must add a Microsoft Entra ID external identity

When you sync users from an external user database, you can sync any number of users and they are all added to AuthPoint at one time. Users synced from an external user database use the password defined for their user account as their AuthPoint password.

To learn how to sync users, go to Sync Users from Active Directory or LDAP and Sync Users from Azure Active Directory.

You can create local AuthPoint users on the Users page in the AuthPoint management UI. Because you can create only one user at a time, you most commonly do this when you want to create test users or to add only a small number of users.

Unlike users synced from an external user database, local AuthPoint users define and manage their own AuthPoint password. When you add a local user account, the user receives an email that prompts them to set their password.

To learn how to add local AuthPoint user accounts, go to Add Local AuthPoint Users.

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.

Add RDP APP

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

Screenshot of CudaLaunch server connection page.

  1. Click Connect.
  2. In the Server certificate error dialog box, click Yes.

LOGIN

  1. In the Username text box, type your AuthPoint user name.
  2. 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.
  3. Click Log in.

LOGIN

LOGIN

  1. Click RDP to run this app.

RUN RDP

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