Fortinet Firewall Integration with AuthPoint

Deployment Overview

This document describes how to set up multi-factor authentication (MFA) for your Fortinet Firewall with AuthPoint, and configure your Fortinet Firewall to integrate with AuthPoint RADIUS.

Your Fortinet Firewall must already be configured and deployed before you set up MFA with AuthPoint. Your Fortinet Firewall can be configured to support MFA in several modes. For this integration, we set up RADIUS authentication for the Fortinet Firewall.

This integration was tested with version 5.2.7 of Fortinet FortiGate 90D.

Fortinet 90D 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 RADIUS.

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 Fortinet 90D Firewall
  • A token is assigned to a user in AuthPoint

Configure Fortinet 90D Firewall

Configure a RADIUS Server

To use RADIUS authentication with FortiGate Firewall VPN you must add a RADIUS server (the AuthPoint Gateway). The AuthPoint Gateway functions as a RADIUS server and must be installed somewhere on your network that has Internet access and that can connect to your RADIUS clients. For more information, see About Gateways.

  1. Log in to the FortiGate 90D web UI at https://<IP address of FortiGate 90D>.
  2. Select User & Device > Authentication > RADIUS Servers.

  1. Click Create New.
  2. In the Name text box, type a name for the RADIUS server. We suggest AuthPoint Gateway.
  3. In the Primary Server IP/Name text box, type the IP address of the AuthPoint Gateway (RADIUS server).
  4. In the Primary Server Secret text box, type a shared secret to identify your RADIUS client.
  5. Click OK.

Create a RADIUS User

Once you have added the AuthPoint Gateway RADIUS server, a user who will authenticate with this server must be defined.

  1. Select User & Device > User > User Definition.

  1. Click Create New.
  2. Select Remote RADIUS User. Click Next.

  1. In the User Name text box, type a user name for the user that will authenticate with the DMS RADIUS.
  2. From the RADIUS Server drop-down list, select the AuthPoint Gateway RADIUS server. Click Next.

  1. In the Email Address text box, type the email address for this user. Click Next.

  1. Select the Enable check box. Click Create.

You can create groups and assign users to them. For more information about groups and users please refer to Fortinet documentation.

SSL Settings

  1. Select VPN > Settings.
  2. Configure all settings in the Connection Settings section.

    Port 443 is used as the administration access port. If you connect to SSLVPN on port 443, you must change the administration access port.

  1. Configure all settings in the Tunnel Mode Client Settings section.

  1. Configure all settings in the Authentication/Portal Mapping section.

Create an SSL VPN Policy

You must create an SSL VPN policy to allow specific users and groups to use the SSL VPN.

  1. Select Policy & Objects > Policy > IPv4.
  2. Click Create New.
  3. From the Incoming Interface drop down list, select SSL VPN interface.
  4. From the Source Address drop down list, select all.
  5. From the Source User(s) drop down list, select the RADIUS user you created.
  6. From the Outgoing Interface drop down list, select the internal interface connected to the AuthPoint Gateway.
  7. From the Destination Address drop down list, select SLVPN_Tunnel_ADDR1.
  8. From the Schedule drop down list, select always.
  9. From the Service drop down list, select All.
  10. From the Action drop down list, select Accept.

  1. Other settings keeps default

  1. Add an HTTPS policy to allow the AuthPoint Gateway to communicate with AuthPoint Cloud through the firewall.

Configure AuthPoint

Before AuthPoint can receive authentication requests from Fortinet 90D, you must:

Add a Fortinet 90D 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 Client. Click Add Resource.

  1. Configure the settings for all options on the RADIUS page.

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 Fortinet 90D RADIUS client 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.
  2. Click Add Policy.

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

  1. Type a name for this policy.
  2. From the Select the authentication options drop-down list, select Authentication options and select which authentication options users can choose from when they authenticate.

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

    QR code authentication is not supported for RADIUS resources.

  1. 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.
  2. 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.

Screenshot of the Save button on the Add Policy page.

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. For more information, see About Gateways.

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

    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. In 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.

Test the Integration

To test the integration of AuthPoint and the configuration of your Fortinet 90D Firewall, you can authenticate with a mobile token on your mobile device. For RADIUS resources, you can choose the one-time password (OTP) or push authentication methods.

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

  1. Start Forticlient.
  2. Switch to Remote Access.
  3. On the SSL-VPN page, click Configure VPN.
  4. In the Connection Name text box, type the name of this connection.
  5. In the Description text box, type a description.
  6. In the Remote Gateway text box, type the IP address of the AuthPoint Gateway.
  7. Click Apply.
  8. Click Close.
  9. In the User Name text box, type your AuthPoint user name.
  10. In the Password text box, type your AuthPoint password and your OTP (the OTP for your token is shown in the AuthPoint mobile app). Do not add a space between your password and your OTP.
  11. Click Connect.