SERIOUS help port forwarding my modem? [migrated]

SERIOUS help port forwarding my modem? [migrated]

Okay, so I know that these kind of questions are pretty popular on
StackExchange, but please hear me out. I have a belkin router, model
F9K1102 v1. I also have a Westell Dual Connection modem, model
A90-220015-04. Now, I have done port forwarding before, although it was
with the same modem and a different (Cisco) router. My modem is IP
192.168.0.47 and my router is 192.168.2.1. I followed the following
tutorial to set up port forwarding on the Belkin router:
http://portforward.com/english/routers/port_forwarding/Belkin/F9K1102v1/Apache.htm
And set up the following under "Virtual Servers":
http://i.stack.imgur.com/xAJ4Y.png
Yet, whenever I try accessing my public IP (from whatsmyip.org) via my
iPhone on 4G, it can't find the server. The connection times out. Online
port sniffers say that port 80 isn't open. This is becoming very
frustrating and I really need it to work. Verizon is my ISP and I am
running Ubuntu Server 12.04, btw.
Any help towards resolving this would be GREATLY appreciated. Thanks in
advance!!