Opening ports on client in ICS

May 15, 2009 at 22:31:19
Specs: Windows XP
Since I have only a usb dial-up modem(russia), I have set up an Internet Connection Sharing for two other laptops, from my main one. It works ok, but the problem is with closed ports for sope p2p programs. Specifically, I can't open ports for the Bitcomet on the client computers.
I am checking my ports with PFP PortChecker from For example, I check the port 23907. On the main computer it is open, on the client - not. I then set up the port forwarding through the connection setup(Advanced -> Settings -> open Tcp and Udp for Bitcomet on port 23907) Note: with Upnp It happened automatically the first time I used BitComet.
After the above was done, the port 23907 appears to be closed on the main computer, but it is also closed on the client.
I am using D-Link 704P router to connect other computers and tried using"Virtual Server" to forward ports.
I am also using Comodo Firewall, with ICS configuration and ports forwarded, even turning it off to test if it is the problem. It was not.

Any suggestions?
PS: oh, and I am not very computer savvy, so please explaing the steps in some detail.

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May 25, 2009 at 06:15:37
Hello Russia :)
Unfortunately, ICS is a poor choice for sharing internet conn. He can not portforward. It is just basic service with basic NAT, does you no good. You can use P2P networks only on machine that is directly connected to uour modem.
If you can get some old PIII machine, you can play with linux routing distros (that is if your modem can connect to paralell port), they will do you a good job indeed.
Best regards

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May 25, 2009 at 07:28:29
You don't port forward with NAT. You port forward within a firewall. If you're not sure what NAT does, a quick google search of the acronym will yield you plenty of information on it and it's capablities.

If you're running the builtin windows firewall, look at forwarding ports within it.

I'm not sure if you can or not, I've never used the windows firewall (no need to, I have a SOHO router and a UNIX based firewall/router).

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