Default Route for Network Access

I don't 100% understand (need more information) but if you are trying to forward traffic without using the TMM routing table entry, then you need to create a Standard virtual server with a network address (non 255.255.255.255 mask). This will turn it into a forwarding server over which you have control of the next hop. The next hop will be determined by the Pool you assign as a resource - this pool could (and often would) have only one pool member - the IP of the next-hop that will get you to the firewalls.