Do you think that there is no way that you can write a based firewall for Vista? Well, my friends, this may just be a lot easier than you think. Get Komodia’s free LSP guide and view the resource page for all the information about the firewall source code in Vista and how you can use that for your own purposes.
Chris
Have you been able to view Barak’s free Winsock LSP video? You can see this video on the same page as the free LSP guide – or you can view the video on YouTube. The LSP resource page here on Komodia is also a wealth of information. Are you interested in a free TDI firewall source code? Then please follow this link.  How about free help winsock functions or any number of other great information? Komodia is the place to be for all LSP information.
Chris