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Laptop Access to a VPN via Home Network.

Posted on 2004-04-27
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Last Modified: 2010-04-11
I want to get set up to access my company network from home using secure client on my laptop. The fallback would be plugging my ADSL modem into it, setting up the connection and away we go. But I don't want to do that!

At home, I have a wireless ad-hoc network, with the modem plugged into one PC, ICS enabled, and a second sharing the connection. These are set up as a workgroup (This is all XP Pro).

I would like to get a USB wireless adaptor for the laptop, and let it share this internet connection as well. However the laptop (again XP pro) is part of the company domain, and would presumably need to remain so once connected to the VPN.

Is what I want to do possible with this sort of setup? Or in order to get the laptop to share the internet connection would it need to be made part of the workgroup instead? I don't need to share any home network resources apart from the internet connection? (and I'm not that hot on networking, having got my home network set up by judicuous use of the network wizards and ghost backups!)
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Question by:dbevan
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by:CountRugen
ID: 10928760
No, you don't have to make the laptop part of the workgroup in order to share the connection.  As long as your laptop is configured to use DHCP it should configure itself and connect to your shared Internet connection just fine.  Since you also aren't concerned about accessing your home network resources, you shouldn't have to do any additional configuration.

HTH
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by:Timothy Kashin
ID: 10928946
In addition to CountRugen's answer, I would like to add something....

We have a VPN setup at work and our internal network is 192.168.1.x.  Most home networking products will DHCP to 192.168.1.x and give you those addresses.  If you have these the same at home and at work, you will not be able to connect correctly due to the subnets being the same.  I had to change my home to 192.168.3.x in order to get the VPN to work correctly from home.

Just thought I would add that in.....
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CountRugen earned 50 total points
ID: 10929528
tjkashin,

The only problem with that answer is that he's using Internet Connection Sharing which restricts the subnet that he can use at all (192.168.0.x if memory serves).

dbevan,

In order to get around this, if it becomes an issue, you would have to get a router and slightly readjust your home network.
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by:Timothy Kashin
ID: 10929768
Ahh, I skimmed through the original and didn't notice that this was ad-hoc.  I was assuming there was a broadband sharing device.  As cheap as they are I would highly recommend one for this application.

Thanks for the correction CountRugen, you are right with ICS, it is very limiting.
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