Description This article describes how to configure ISP IPv4 WAN on VLAN
(Layer 3). Scope FortiGate v6.0.0 and above. Solution For GUI: Go to
Network -> Interfaces. Create a VLAN interface over the WAN interface:
Select Type: VLAN. Select the VLAN ID...
For public knowledge, this issue is more related to the Windows
environment then the Fortigate indeed, if anybody get any doubt about
it, please check the official link:
https://learn.microsoft.com/en-us/troubleshoot/windows-server/networking/configu...