Problems with internet sharing

Motorola Surfboard sb5101 cable modem
February 28, 2010 at 14:41:00
Specs: Windows XP
ello i have two computers on one modem,so i take a look and my ISP provides 2 ips.
I have one computer with 3 cards(that is master computer)

I want like this:
First card to get internet
Second card to share the internet but to get public ip address(i think this is called bridge)
Third card to share the internet but to generate local ips(192.168....) and use (First card) ip address from modem

I have also SB5101 Motorola modem.

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February 28, 2010 at 17:09:35
Are you sure that your ISP is providing 2 external IP addresses?

Using a windows PC as a router is one big pain. Buy a router & install it between the modem & all the PCs. It's so much easier.

How do you know when a politician is lying? His mouth is moving.

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February 28, 2010 at 19:21:50
Here's a link to using multiple IPs with one modem:

But I wouldn't bother, unless you know what you are doing.

Windows ICS (internet connection sharing) is not too bad. Go to "network connections", start->control panel->network connections. Right click on the connection that is connected to the internet. Choose properties. Go to the advanced tab and check the "Allow other network users to connect through this computer's internet connection" box.

You might have to have a hub/switch between the two computers. Or you'll need the right kind of ethernet cable - crossover cable.

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