Frameworks for network protocol fuzzing? [closed]

Question

Can anyone recommend any programmer-friendly (i.e. extensible) frameworks or systems for performing network level packet fuzzing?

I'm looking for such a system where I can program in additional packet formats and various ways of breaking those packets in a protocol-dependent manner.

I know how to Google. I'm looking for specific recommendations :)

thanks!

Answer 1

You might be interested in American Fuzzy Lop combined with Preeny. It's a fuzzer that is quite simple to use and employs genetic algorithms, which in this case means that it's going to detect which changes in input bits lead to new code paths and pay more attention to those.