How do I share my wireless connection via a wired cable?
This is surprisingly easy at least with Ubuntu 12.04. I have not personally been able to test this on 12.10 but It has been confirmed that this works there too. I use the Gnome Classic desktop but similar steps should work with any desktop.
I'm connecting my Windows 7 machine to the internet via the Wifi on my Ubuntu 12.04 machine.
step 1
step 2
step 3