My firewall shows. 50.18.204.187:5230.
I have two wires running from my firewall to WRT1900ac:
- One to the Internet port, that is allow WRT1900ac to contact Belkin/Linksys Command and Control. - I believe this would be your DMZ equiant.
- The other to the Switch port, so the Firewall gets all traffic with original MACs. Make WRT1900ac act as airport.
DHCP is handled by the Firewall for both interfaces each in their DHCP pools.
If you setup like me watch out about WRT1900ac MAC. The machine only has one, so create one on via MAC Clone - I just increamented WRT1900ac mac.