Last updated on February 12, 2026
Overview of MFA for Fortinet FortiGate VPN
Multi-Factor Authentication (MFA) for Fortinet FortiGate VPN adds an extra layer of security by requiring two forms of authentication. First, users must enter their Active Directory or RADIUS username and password. After this, they must complete a secondary authentication step using a supported method, such as a Mobile Push or Email Link. Once both steps are completed, access to the VPN is granted. Enabling MFA enhances security and helps prevent unauthorized access by malicious actors using stolen credentials.
Rublon introduces Multi-Factor Authentication in a number of ways.
- Rublon Authentication Proxy is used for integration via the RADIUS protocol.
- Rublon Authentication Proxy is also used for integration via the LDAP(S) protocol.
Before You Start
Ensure you have properly configured Fortinet FortiGate VPN.
Ensure that you have properly set up your authentication source, that is an external Identity Provider (IdP) like FreeRADIUS, FreeIPA, OpenLDAP, or Microsoft Active Directory.
Configuration of MFA for Fortinet FortiGate VPN
Depending on your preference, you can integrate Rublon MFA with Fortinet FortiGate via RADIUS or LDAP protocol.
MFA for Fortinet FortiGate SSL VPN using RADIUS
Integrate Fortinet FortiGate SSL VPN with Rublon to introduce Multi-Factor Authentication (MFA) to your logins. You have to install and configure Rublon Authentication Proxy before configuring Rublon MFA for Fortinet FortiGate VPN using RADIUS.
How to enable MFA for Fortinet FortiGate SSL VPN – RADIUS
MFA for Fortinet FortiGate SSL VPN using LDAP(S)
Integrate Fortinet FortiGate SSL VPN with Rublon to introduce Multi-Factor Authentication (MFA) to your logins. You have to install and configure Rublon Authentication Proxy before configuring Rublon MFA for Fortinet FortiGate SSL VPN using LDAP(S).
How to enable MFA for Fortinet FortiGate SSL VPN – LDAP(S)
MFA for Fortinet FortiGate IPSec VPN using RADIUS
Integrate Fortinet FortiGate IPSec VPN with Rublon to introduce Multi-Factor Authentication (MFA) to your logins. You have to install and configure Rublon Authentication Proxy before configuring Rublon MFA for Fortinet FortiGate IPSec VPN using RADIUS.
How to enable MFA for Fortinet FortiGate IPSec VPN – RADIUS
MFA for Fortinet FortiGate IPSec VPN using LDAP(S)
Integrate Fortinet FortiGate IPSec VPN with Rublon to introduce Multi-Factor Authentication (MFA) to your logins. You have to install and configure Rublon Authentication Proxy before configuring Rublon MFA for Fortinet FortiGate IPSec VPN using LDAP(S).
How to enable MFA for Fortinet FortiGate IPSec VPN – LDAP(S)
Troubleshooting
If you encounter any issues with your Rublon integration, please contact Rublon Support.
Related Posts
Rublon MFA for Fortinet FortiGate IPSec VPN – LDAP(S)
Rublon MFA for Fortinet FortiGate SSL VPN – RADIUS
