I used to connect the router directly to my Cable modem and it would obtain its IP from there and it would act as a DHCP server.  I have put a hardware firewall in between having the firewall connect to the internet and acting as the DHCP.  I have the router plugged into the firewall on a normal port and in the router I put it where the old ISP WAN was plugged in - the WAN port on the router.  Is that correct?  Should I put it in a regular port/aggregation port or leave it in the WAN port?

I just realized that I should set the wireless router up as a subnet under the hardware firewall and it should assign its own range of IPs and might need to be set up with a static IP to accomplish that.   I don't know if that static IP should be inside the range of IPs assigned as part of the firewall or outside. Any help would be appreciated.