Infrastructure:
Here's what I want, be able to connect to the website 10.10.100.32:8080 from my LAN on 'Router 1', and all the traffic outside the port 8080 should go to the default gateway 'Router 1'.
iptables -t nat -A PREROUTING -t -nat -p tcp -s 0/0 --dport 8080 -j DNAT --to 192.168.67.251
But it didn't worked.