[CFS] Network address translation

[Steve Sterling]

Sorry that I didn't get to read email yesterday-- busy day!!!

I run a Linksys, so hopefully they are similar.......

As mentioned in our writeup, each player must be able to broadcast 
(using the UDP protocol) their position and flight data to every other 
player. Home routers, using Network Address Translation (NAT), allow 
multiple computers to use a single internet external IP address. But if 
an external computer is trying to send the flight datagram, how does the 
router know which computer on your internal network to forward that 
datagram?

Generically, the flight datagrams come in on a range of port addresses 
that Microsoft has published. In your router, you must set up a port 
forward as follows:

    * Port 47624, TCP and UDP Protocols, to the internal IP address of
      the computer being used for CFS
    * A range of ports, 2300 to 2400, UDP Protocol only, to the internal
      IP address of the computer being used for CFS

First, you will need to determine the INTERNAL IP address of the 
computer to be used for CFS. I have XP, so I click Start button, then 
the RUN menu item, and enter CMD to bring up a DOS window.  Then I 
execute IPCONFIG program and it lists out. It is usually something like 
192.168.1.xx  or 10.x.x.x.

Next you need to get into the administration of your router. For 
Linksys, unless you have changed something, use a web browser to go to 
http://192.168.1.1. Your manual should have your default password.  I 
forget what it is,because I changed mine.

With my Linksys, there is a menu tab called "Applications and Gaming". 
Once you click that, there are submenu tabs "Port Range To Forward".  I 
then put in the following entries:

App      Start      End        Protocol       IP 
Address                                            Enable 

CFS    47624  47624        Both             192.168.1.102 (use yours, 
not mine)   Check enable
CFS    2300     2400         UDP            192.168.1.102 (use yours, 
not mine)   Check enable

Click Save Settings at the bottom of this configuration page.

You should be good to go.

Ron Hollenbeck wrote:
> So, since it is snowing hard and I got sent home from work early, I'm 
> trying to get set up to use the CFS listserver.  I have the CFS 
> Version 1.00 WWII Europe series, I've downloaded the TeamSpeak2 
> software, subscribed to the CFS listserver and now I need to do the 
> network address translation thing on my WRT54GL Linksys wireless 
> router. Can anyone help?  Also once that is all done how do I join or 
> initiate a battle?
>  
> Thanks,
>  
> Ron
>
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