Well, so it's not blind leading the blind, its actually some experts misleading the blind.
So, here goes, I'm going to cut to the chase here for the benefit of those that haven't got the gist of what I was trying to put through, although I'm sure that the people that have responded so far to my post know what I was trying to get at.
Windows XP, Windows Server 2003 - which is used even now to run ISA Server at major enterprises planet-wide - and all Microsoft OSes preceding Vista had no concept of User Mode Device Drivers. And Ethernet is used almost everywhere as the Layer 2 hardware to route IP over. Ethernet is a hierarchical network, uses a globally visible 48-bit MAC address, and you have to know that if your computer is connected to anything it can be intruded on. That would include these fancy 24 to 30-inch monitors with all kinds of CE inputs like component, S-Video, etc. to which you might hook things up like your cable company's receiver and anything else. Ethernet's hierarchical model was expected to formalize some of this stuff, but there are lots of people out there that have no idea that what they do on the Internet has ramifications on this Ethernet underworld, where people actually impersonate you on the Internet using your Ethernet NIC's device driver as the conduit through which to get to your OS kernel. This actually has the blessings of your ISP, too. If they have subverted your OS kernel this way, you're being shadowed. The obvious picks here are children that do innocent things on the Internet and their actions are logged by the people that have subverted the OS kernel as outlined above, and use those logs to impersonate children in order to hide their own evil actions.
Now, its not just kids, there are grown-ups that do innocent things on the Internet, so there's just a lot more money involved there - intellectual property theft, etc.
To circumvent this sort of evil, you can use Windows Vista that has a security feature called User Mode Device Drivers, where such drivers have no access to the OS kernel. This still doesn't solve the problem. I outlined a solution to all this as early as 1999/2000, but at that time I didn't have a lot of the details on all these problems, so I couldn't argue convincingly that my solution would solve this. I just knew that my IP - actually several IPs - were being stolen, so I put forward a broad strategy without a lot of details. Much of that is not in place yet, but User Mode Device Drivers in Vista do help.
Perhaps you folks at www.isaserver.org can now confess to the people that you lead about how they should really have been protected.