Question regarding writing a pass through proxy for logging purposes...

I'm interested in writing a pass through proxy for logging purposes, but I'm unsure of the proper place to start. I have a few assumptions on the appropriate starting place, but would like to get some feedback from others.

Goals:

- ability to log target and source IP addresses for any incoming or outgoing packets
- ability to toggle logging for a specific NIC
- ability to toggle logging for specific target/source IP addresses
- ability to toggle logging for specific ports on specific target/source IP addresses
- ability to log which process initiated an outgoing packet


Assumption:

- Should use a pass through intermediate mode NDIS driver for hooking the NIC devices on the users machine

Thank you for your thought and feedback,
Lee Wallen