Foritgate in Azure using multiple subnets and vnets

[SarK]

I have an existing Azure environment with a vFG that currently has one subnet. However, we need to add several more VNets with different subnets now, and we want the FG to control the traffic between them.
Each LAN side NIC needs to be on a separate subnet, which would put it in a separate vNet.  All NICs have to be on the same VLAN.  I'm not sure how to configure this.  

[Jean-Philippe_P]

Hello Sark, 

Thank you for using the Community Forum. I will seek to get you an answer or help. We will reply to this thread with an update as soon as possible. 

[zoyanma9]

You have to peer the VNETS with your Fortigate VNET, then setup user defined route table for each subnet within your VNET pointing to the Fortigate interface(s). Then of course your Fortigate will need routes back to your VNET interface gateway IP. You can route your subnets to one Fortigate interface or multiple different interfaces for firewall segmentation.