[Bro] p0f OS fingerprinting question

Gary Faulkner gary at doit.wisc.edu
Thu Jan 23 14:25:47 PST 2014

I was asked recently if Bro could do passive OS fingerprinting (in 
relation to keeping tabs on XP usage on our networks), and it seems that 
there was a dedicated mechanism for this using p0f, but that the Bro 
tie-ins may be deprecated per BIT 323 
<https://bro-tracker.atlassian.net/browse/BIT-323> or at least very out 
of date due to a 6 year p0f development hiatus. With p0f having been 
rewritten in 2012 are there there any plans for updating Bro to support 
the newer version? The user agent strings in software.log are useful, 
but it seems like there were even more fine grained events and records 
that came with the p0f tie-ins in regards to parsing out the OS.


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