Issue: setup UTM Home in small network - keeping DHCP/NAT at Router

Hello!

I am evaluating UTM Home and am stuck at setup.

I have a standard home steup:

(internet) ---- (Modem-Router w/ integrated DHCP/NAT)  ---  Switch  ----  Clients(1-10)

For integrating the UTM I would like to keep as much as possible from the current setup. For example I would like to leave the DHCP/NAT functions at the router.

From the documentation I understand that I will have to build this network setup:

(internet) ---- (Modem-Router w/ integrated DHCP/NAT)  ---  Sophos UTM ----  Switch  ----  Clients(1-10)

I did this but is is not working. I tried several configurations at the UTM. I also tried the bridge mode.

Any pointers to a working setup are greatly appreciated.

Best regards,

Stefan