Basically you need to Disable DHCP, set the LAN IP of the router to a static IP in the same subnet as the firewall ( but outside it's DHCP range ) and then connect one of its LAN ports to the firewall. This might help explain http://npr.me.uk/together.html , you are effectively configuring it as the second router in that scenario.
Superusers are not staff, but they do have a direct line of communication into the business in order to raise issues, concerns and feedback from the community.
