Fortinet offers a token-based solution that enables two-factor authentication.
This authentication method enables high security level and strong authentication of the system users.
A hardware or a smartphone software token is assigned to every user.
When users log in to the system, they ask the smartphone application for a one-time login code.
This code is valid for very short time (usually up to 60 seconds) and the only one who has the code can login to the organization via VPN.