How would I get started writing my own firewall?

Question

There is previous little on the google on this subject other than people asking this very same question.

How would I get started writing my own firewall?

I\'m lo

Answer 1

For Windows 2000/XP there is an article with examples on CodeProject Developing Firewalls for Windows 2000/XP

For Vista I think you will need to use Windows Filtering Platform