There are a couple of things that you should know before using this guide...

Firstly, sharing your cable connection is not officially supported by Telstra or Optus. This doesnt necessarily mean that you can't do it; but if you do, they won't help you. Furthermore, some of the Telstra plans even ban sharing your connection (which I think is a bit cheeky), so it's up to you to ensure that you're allowed to do this.

Secondly, this guide covers cable modem sharing in Windows only. Despite this, you should realise that the internet is operating-system independent, so a Windows PC will happily share a cable modem connection with a Mac and a Linux box etc... it's just that I don't explain how to do it! Some time in the future I will add a section on configuring Macs as client computers, and may eventually add a section on using a Mac as a server. I don't cover Linux, because if you've managed to get your Linux computer to connect to the internet, you probably already know enough to share your connection. But I'm happy to help via email if you need it.

OK, lets get to it!