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Edit File: existential-notes.txt

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Some random food for thought:
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1) If you run p0f on any reasonably popular server, you will probably see quite
   a few systems that seem to be leaking memory in TCP headers (e.g. ACK number
   or second timestamp set on SYN packets, URG pointer without URG flag, etc).
   You will also see HTTP traffic with non-stripped Proxy-Authorization headers
   and other hilarious abnormalities.

Unfortunately, pinpointing the sources of many of these leaks is pretty hard;
   they often trace to proprietary corporate proxies and firewalls, and unless
   it's *your* proxy or firewall, you won't be finding out more. If you wish to
   put some investigative effort into this, there are quite a few bugs waiting
   to be tracked down, though :-)

2) After some hesitation, I decided *against* the inclusion of encrypted traffic
   classification features into p0f. Timing, packet size, and direction
   information lets you, for example, reliably differentiate between interactive
   SSH sessions and SFTP uploads or downloads; automated and human password
   entry attemps; or failed and successful auth.

The same goes for SSL: you can tell normal HTTPS browsing from file uploads,
   from attempts to smuggle, say, PPP over SSL. In the end, however, it seems
   like stretch to cram it into p0f; one day, I might improve my ancient 'fl0p'
   tool, instead:

http://lcamtuf.coredump.cx/soft/fl0p-devel.tgz