In this example, a Windows network is connected to the FortiGate on port 2, and another LAN, Network_1, is connected on port 3.
All Windows network users authenticate when they log on to their network. Engineering and Sales groups members can access the Internet without reentering their authentication credentials. The example assumes that you have already installed and configured FSSO on the domain controller.
LAN users who belong to the Internet_users group can access the Internet after entering their username and password. The example shows two users: User1, authenticated by a password stored in FortiOS; and User 2, authenticated on an external authentication server. Both users are local users since you create the user accounts in FortiOS.