Question : Problem: Port Forwarding

I am trying to configure Port Forwarding for one of the PCs present on my network.

I am using a DSL connection. The DSL Modem Huwai SmartAX MT880 is connected to a PC which has two network cards. One is connected to DSL Modem and the other is with the Network Switch.

Both the cards have different series of IP and SubNet.

Now when I configure Port Forwarding in the DSL Modem to access the PC to which modem is connected, it works fine. But when configure it to access the other PCs on the network it fails.

It's probably due to different subnets  ad IP series.

Please help me on this.

Answer : Problem: Port Forwarding

You could essentially make the PC a router between the two networks. You're off to a good start. You need 2 NICs both with a seperate IP address for each of the networks.

You then need to configure IP Routing between the segments. The feature is not configurable through GUI on Win XP or 2000 so you'll need to edit the registry:

In the Run command type Regedit.exe and press Enter.

In the registry navigate to

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

Select the "IPEnableRouter" entry (by default the value is 0) and change it's value to 1.

Once  you do this, reboot the computer and run an ipconfig /all from the command prompt. Enusre the IP ROUTING is set to ENABLED.

Let me know how it works!