need networking help to open up ports of firewall

[Ready]

I'm playing WC online and to host games i have to open up
ports
UDP and TCP 4000
UDP and TCP 6112 - 6119

I access my router by typing in the IP address of my router 192.168.1.254
and the 4 computers are assign the following address
192.168.1.1
192.168.1.2 (me)
192.168.1.3
192.168.1.4

I make a virtual server for

port UDP and TCP 4000
UDP and TCP 6112 - 6119 for IP address 192.168.1.2 and I can host games. But the problem is the other computers still cannot host games. I tried opening up ports UDP and TCP 4000 UDP and TCP 6112 - 6119 for the other IP address like 192.168.1.3 but it won't allow me to do so saying duplicate port error. So then I deleted all the virtual servers and open ports UDP and TCP 4000
UDP and TCP 6112 - 6119 for IP address 192.168.1.254 which is that of the router. That didn't work either and non of the comptuers can host games

Can somebody please help me with this problem?

 

[Fuzznuts]

not only are you opening the ports but it sounds like you are forwarding them to you IP address. this is the only way that you will be able to host a server. Unfortunaterly port forwarding is a one to one mapping you wont be able to map the same ports to mutliple ip address's it simply wouldnt work eg say you have an ftp server on 2 internal address with 2 sperate maps to 2 different ip address's. the first request come in on port 21 to the correct pc the 2nd data request goes over port 20 to pc 2 there lyes the problem you data is being sent to two different places and there a proper connection is not made. Basically you can only host 1 WC server on your lan at any one time

 

[Soybomb]

Most cheap routers will only support 1 IP address so you can only map an individual port/type to 1 IP address. If you had multiple IP addresses and a router that supported them then you could map each port to an individual machine. The best thing to do would be set your other game servers up to use different port numbers, then you people can access them in the form of 123.456.78.9:4001, etc Setting it up would be sort of like hosting multiple servers on the same machine.