Contents

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 resourceIn AuthPoint, resources are the applications and services that your users connect to. in AuthPoint and assign an access policyAccess policies specify which resources users in a group can authenticate to and which authentication methods they can use. for the Barracuda resource to the user group(s) that must authenticate. You must also 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.
  2. From the Choose a Resource Type drop-down list, select RADIUS. Click Add.

  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 an Access Policy to AuthPoint

You must have at least one user group in AuthPoint for authentication with Barracuda Network Security Appliance, and you must assign an access policy for the Barracuda RADIUS client resource to that group. If you already have a group, you do not have to add another group.

In the AuthPoint management UI:

  1. Select Groups.
  2. To add a new group, click Add. If you already have a group that you want to use, click the Name of your group to edit it.

  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.

  1. In the Access Policy section, click Add Policy.

  1. In the Add Policy dialog box, from the Resource drop-down list, select the resource you want to add an access policy for.
  2. (Optional) To require that users type their password before they authenticate for this resource, select the Require Password Authentication slider.
  3. Select which authentication options users in this group can choose from when they authenticate.

    For RADIUS resources, you can only choose OTP or push. RADIUS resources cannot use the QR code authentication option.

  1. Click Add.

  1. (Optional) Add one or more safe locations to your group. For more information about safe locations and detailed instructions to add them, see About Safe Locations.
  2. Click Save.

Before you can assign users to a group, you must add them to AuthPoint. You can either manually add user accounts, or import user accounts from your LDAP database. For more information about how to add user accounts, see Add User Accounts.

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. For more information, see About Gateways.

  1. From the navigation menu, select Gateway.
  2. Click the Name of your Gateway.
  3. In 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.
  4. From the Select a RADIUS resource text box, select your RADIUS client resource.
  5. Click Save.

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.

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