The Fortinet Firewall is capable of integrating with the Microsoft Active directory.
It can use the following Methods:
I. Fortigate FSAE/FSSO
This feature provides a transparent authentication for the users.
In the older version you can fin it named as FortinetFSAE, but in the new versions it appears are Fortinet FSSO.
The Fortigate FSAE/FSSO is composed of the following 2 softwares:
1. Domain Controller Agent
This software monitors the user login. This software is deployed on the Domain Controllers of the users domain. You can find it in C:\Windows\System32\dcagent.dll