Port Forwarding- Multiple Routers (a TP-Link TLWR480N and an optronix modem)

Question

Ok so I want to forward port 14492 on my computer (it has a static IP). But the problem is that I have basically 2 routers, so my connection is like the following:-

Internet-->Router 1 (Optronix Modem)--> Router 2 (TL-WR840N)--> Computer

Now the problem is when I go into the settings of the 2nd router, by entering the default gateway (192.168.0.1), I saw that LAN subnet is 255.255.255.0 and WAN is 255.255.255.128

For Router 2:-

WAN IP is of the form 10.x.x.x, and LAN is 192.168.0.1 (this is the link that I use to access its web UI).

How go I go about port forwarding? I'm a beginner so a little bit of explaining would be appreciated please. Thanks.

Answer 1

You will first need to understand double NAT: http://www.practicallynetworked.com/networking/fixing_double_nat.htm

Then if you decide that you don't want to turn one of the devices in to a bridge then you would:

on the first NAT device (the one closest to your Internet connection) forward the port(s) you need to the IP address of your second router's WAN port. Then on your router, forward the same port(s) to the address of the device you need to reach.

Basically you will need to do everything twice and you're going to hate it. I suggest just putting router 2 in bridge mode.

EDIT: To do that, just plug all connections in to switch ports, avoiding the WAN port. Turn off DHCP. Make sure all devices are in the same subnet.