*FTD acts the same way as ASA when it comes to Radius authentication, so it works well & I have tested it as well.
In this video we will learn how to use the DUO product "DUO Authentication Proxy" with ASA/FTD by using the "Cisco Radius VPN" API in DUO cloud.
Firstly we will learn how to configure the DUO cloud via a DUO account by managing users & DUO Application API's that are in place.
Next we will cover the ASA syntax for radius, the same can be implemented for FTD via FMC Server.