Well portforward is really helpful. I need your specific Belkin model (being that Belkin has like 1673189 different models) to do it, but I can tell you the general stuff
Type in your default IP adress in the URL bar (usually it's 192.168.1.1 but if it isn't go to Start -> All Programs -> accessories -> command prompt. Then type in ipconfig/all (I believe just regular ipconfig will do, but the /all just in case
)).
It will be under "Default Gateway...." By default, the user is admin and the password is either password or password1. If it isn't...then find out what it is. This will let you into your router page.
Some routers don't need a static IP, like mine, but I'm not sure about yours. You might need to make one. Use
http://portforward.com/networking/staticip.htm to do so. It should be straightforward, but if you still need help feel free to say so.
So after that find the "Port Forwarding" tab in your router page. Mine's under the "FireWall" tab. If there's a warning saying something like "changing some settings may affect your firewall performance. Do you want to continue" blah blah blah, just say yes.
*Note that from this point on, I'm just telling you what I did for my router, as your router is different, you might need to do something different or some of the things are located in different spots. As I said, portforward.com is much better at this
.
After you found that, there should be a list of numbers and words. On the top row, it should say something like "Networked Computer / Device....Network Address....Protocols..." etc.. Find the "Add" button and click on it.
Under "Networked Computer / Device:" select "Specify Adress" and type in your static IP from earlier.
Under "Protocols" click "Add" and type in something in the Service Name spot to let you know what this edit is for (ex: WarcraftIIIHost). Then under Server Ports -> Protocol click "Add Protocol"
Select either TCP or UDP (it doesn't matter which because you'll need to use both anyway). Change the "Source" to "Any" and the Destination to Range. Type the range in as 6112 to 6119. These are the host ports for WC3. Do this to the other one (if you selected TCP earlier, select UDP this time, and vice versa). You should now have two things under the "Rule Name" category labeled TCP and UDP. Both of which should have the source as "Any" and Destination as a Range from 6112-6119.
Next go to "WAN Connection Type" and select All Broadband Devices.
Then go to "Forward to Port:" and select "Same as Incoming Port"
Lastly, under "When should this rule occur" select Always.
Hit save and your router should be fine.
The last thing you have to do is open up WC3, go to Options -> Gameplay. You will see an option that says something that has to do with gameplay port. Set the port number as something between 6113 and 6119. It should be at 6112 right now if you haven't changed it.
Hit Ok. Log onto BNet and then test to see if you can host. It should work but if it doesn't, I suggest going to Portforward, as I told you the way to do it from my router ^^.
