Port Forwarding from modem --> router --> computer ?

[threebythree]

Hi, I've been looking at various help and troubleshooting guides all morning and can't seem to get UltraVNC to work from outside the local area network. It works fine in our LAN; the client just has to type 192.168.1.8 and remote access works perfectly. From outside the LAN, however (such as when logging in from across town), it always fails to connect to the server computer.

I understand that since we have only one WAN IP address for a bunch of network computers, I have to use port forwarding to get it to work. Our Modem's WAN IP is technically a dynamic one, but seems to have a fairly stable IP address (let's call it x.x.x.x); it hasn't changed in at least a month. Can we treat it as static for the purposes of troubleshooting, as long as it doesn't change soon?

I have a Qwest modem, which has a Modem IP Address, and 2 DNS Addresses. I set up Port Forwarding so that Port Range 3389 to 3389 goes to 192.168.0.2, which I think is the Internet Port address of my Netgear Router (model WGT624v4). However it says that the LAN Port of the router is 192.168.1.1. Should I be forwarding to this address instead?

In any case, I've set up the Netgear Router to also forward port 3389, but this time to the actual computer itself, which is at 192.168.1.8. I've set it so that in the UltraVNC server settings, port 3389 is the one to be used.

It keeps giving me an Unable To Connect To Server error every time I try to connect from outside the network. The log-in I tried was: x.x.x.x::3389. It seems like perhaps the modem is not forwarding over port 3389 to the router?

I've also made sure that there's a firewall exception in the server and client computers for port 3389, and for the UltraVNC executable files.

I'm quite new to this and have no idea at this point what to do. Any help would be much appreciated!

Thanks!

[kissson]

from router, map the inbound port to local lan pc's ip address

[threebythree]

from router, map the inbound port to local lan pc's ip address

I've already done that through the "Port Forwarding/Port Triggering" section of the NETGEAR router control center.

Service name: remote access
Start Port: 3389
End Port: 3389
Server IP Address: 192.168.1.8 (the local IP address of the computer in question).

Is there something I'm doing wrong? Should not be doing any forwarding at all from the modem control panel?

Thanks for taking the time to help!

[sniper-vlz]

I couldn't understand your LAN configuration. The description you gave is too complicated. However, I can give you some advices.
Check if the workstation you are trying to access have a proper gateway IP address configured.
"Can we treat it as static for the purposes of troubleshooting, as long as it doesn't change soon? " - it depends on your Internet provider.
Also make sure that your WAN IP address is a "white". For example, you can check it by trying to configure modem, using it's WAN IP address. Or you simply can call your provider

[redge]

a modem as bridge, (no routing) you should do nothing,
a router, you need port forward

if you have 2 routers, you need port forward on both and enable multirouting protocol, otherwise, only single router pass and fail next route.