hello @ScottWilliams    Unfortunately the GX20 does not support DMZ, so what you're asking for is not available out of the box.   But there might be a workaround.   In order to make it work, you need to know the port-number or port-range IDEXX uses to connect to the router. It would also be helpful to know the IP-address IDEXX has or uses for that type of connection.   Then you can set port forwarding rules on the GX20 and allow only IDEXX to use those ports.   cheers   ... View more