opnsense with fortigate same network

[mtawfik]

sorry about my english but i have question
i have fortigate and i cant renew license so i will use opnsense , but i want to use it with fortigate , the only thing that fortigate will handle is authentications captive portal ,  and speed limit for users on my active directory (THIS OPTION NOT IN OPNSENSE) - and opnsense will do the rest
my current network diagram

IPS (2 lines ) - fortigate FW - Coreswitch (handle routing and vlans)- switches and APs - then users PCs and laptops

is that possible to make the opnsense works side by side with fortigate

[mtawfik]

any updates ?

[lilsense]

your Fortigate will NOT act as a firewall.

I presume IPS will be your OPNsense which means that it WILL be your firewall. This means that it is possible to set this up.

edit:
  you can download a Fortigate VM and set this up with a OPNsense VM to test out.