[Asura]

This guide Is very detailed.

Without question, It'll certainly benefit Mac users. I'd be very Interested If there's a Windows-based tutorial.
I shall see.

I could probably write up an in-depth guide for Windows if I had time. It may not be much but it would give others some ideas on how to 'harden' Windows. I tried to implement my methods onto XP which went pretty alright. I'm just trying to find a good firewall similar to Windows' built-in Advance Firewall since XP doesn't have one.