How do I hook the TCP stack in Windows to sniff and modify packets?

Question

I\'d like to write a packet sniffer and editor for Windows. I want to able to see the contents of all packets entering and leaving my system and possibly modify them. Any lang

Answer 1

this:

TdiFw is a simple TDI-Based Open Source Personal Firewall for Windows NT4/2000/XP/2003

http://tdifw.sourceforge.net/

may help you