Detecting encrypted traffic with frequency analysis – Update
I recently wrote about a plan for detecting encrypted traffic, where I mentioned in the comments that I’d come across a package called net-entropy (very detailed writeup here). I’ve been in touch with Julien Olivain, one of the authors, and he’s kindly given me the sources to experiment with.
And experiment I shall – I’ll post my findings when I’ve got some!
Alec Waters is responsible for all things security at Dataline Software, and can be emailed at alec.waters(at)dataline.co.uk