UTM - Configuring Bridgemode / Transparent Bridge

Hi all,

The issue i continue to face is using a PC/Third party Hardware as an in-path transparent bridge device. I continue to read this is possible with Sophos UTM but unable to find directions to do so. I have found documentation for the regular Sophos bridge deployment but not UTM. I will gladly pay the subscription is this is possible

 

L2 SWITCH (LAN 192.168.100.0/24) ==> UTM (LAN) ==> UTM (WAN) ==> Firewall (LAN 192.168.100.0/24) 

 

I want to pass L2 traffic throguh this device up to the firewall. Yes there are some limitations here but the double NAT idea is not feasible for this setup