internet sharing PCs and Mac

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March 22, 2010 at 04:12:41
Specs: Windows XP
I have 2 PCs both running XP. One of them has a USB wireless cellular connection for the internet. I currently have an ethernet crossover cable to connect the 2 PCs and that has been working fine. Now my daughter moved in with her Mac running an older version of OS10. Can I somehow connect all 3 computers using ethernet and share the internet?

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March 22, 2010 at 08:21:44
I'm guessing you have the second PC connecting using ICS. Is this correct?

You might be able to do this by purchasing a switch and connecting all PC's to the switch.

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March 22, 2010 at 09:33:08
Yes, that is correct. A friend at work, now retired, helped talk me through setting up the 2 PCs with internet sharing and an ethernet crossover cable. The host PC has the USB wireless receiver plugged into it and is always on. I had no need for setting up any kind of system with a router at that time. Now with a Mac in the mix and making a 3rd computer I like to set up some kind of hub sharing arrangement. I have zip experience in this area but my research so far seems to indicate that using an ethernet router is a way to go if your main internet connection goes to it. That is not the case here. I have to leave the main PC as the host. Worst case, I don't necessarily need to have all 3 connected to the internet at the same time if that's not possible. I would be willing to even plug and unplug cables to have only one of the sub computers connected to the host at a time. In this situation I also do not know if I could just unplug the crossover ethernet going to the 2nd PC and temporarily plug it into the Mac without having to do any kind of setup each time.

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March 22, 2010 at 09:42:46
You don't need a router. A simple 8 port switch will do nicely.

You will need regular patch cables to connect all PC's to the switch. You can't use the crossover cable as it's only required when connecting like devices.

I haven't used ICS in ages but if memory serves me, the IP address of your "host" ICS computer will be with Subnet Mask:

Your second computer will likely be: with SM: and Default Gateway IP:

To add your Mac you will give it the following:

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March 22, 2010 at 09:58:29
Thanks Curt, I'll have to buy some hardware and give that a try.

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