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I need a single, easily configurable, preferably open source, and still complete solution to turn my laptop into a WiFi Access Point, Router and Firewall/NAT, and share its own 3G internet connection (seen by the OS like a dial-up connection).

OS is Windows 7.

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up vote 1 down vote accepted

Which operating system is running on your laptop?

Assuming Windows 7 you might simply use the built-in internet conenction sharing:

  • Go to Control Panel > Network and Internet > Network and Sharing Center
  • Under Change your networking settings, click Set up a new connection or network
  • Select Set up a wireless ad hoc (computer-to-computer) network
  • Enter your Network name, and enter a Security key if wanted
  • Check the box for Save this network and click Turn on Internet connection sharing on next page
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Windows 7. Thanks for your help (I upvoted) but this is not properly what I asked. I will do it as a temporary solution. – gd1 Oct 3 '11 at 11:38
I see. You might take a look into virtualrouter (opensource) or Connectivity (the light version is free). But if you want a more configurable solution e.g. with configurable firewall rules, I'm out of ideas. – guenter Oct 3 '11 at 12:06

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