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I'm a Unix programmer and I need to write a (hopefully simple) program for Windows that does the following:

(1) Installs from a USB drive (2) Somehow integrates with the OS at a low-level in such a way that it can filter/shape all network traffic in/out of the machine (a la IPSec)

I can write in C, asm, Python, Java, but I have no idea about Windows' methods for doing this sort of thing, nor where to start learning. (I could easily do the above with Linux using a kernel module.)

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    Far from simple as a rule, have a look at the Wireshark codebase. Commented Mar 23, 2011 at 0:55
  • Your best bet of achieving this would be C++/CLI or C# Commented Mar 23, 2011 at 0:55
  • @Orbling: Thanks for the pointer, but my understanding is that Wireshark is based on WinPCap which is a sniffer, not a filter (ie, it cannot shape traffic, only collect statistics and log traffic). I will edit my question to make it clearer what my needs are. Commented Mar 23, 2011 at 1:04
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    In which case, I would suggest having a look at the PeerBlock code. Commented Mar 23, 2011 at 1:08

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You going to need to come up to speed on how to write an NDIS filter driver. Kernel-mode work is usually performed using the Microsoft C compiler and the remote kernel debugger WinDbg.

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