Re: [Bloat] measuring "flows-in-progress" over an interval

[Dave Taht <dave.taht@gmail.com>]

On Mon, Jul 30, 2018 at 3:18 PM Kathleen Nichols <nichols@pollere.net> wrote:
>
>
> If you do not find a tool, you might try building your own. Using
> libtins http://libtins.github.io/ makes it much easier to build C++
> programs that operate on sniffed packets than it used to be. I used it
> in pping https://github.com/pollere/pping and connmon for TCP flows and
> in some non-public stuff to try to figure out things about UDP "flows".
> You (or some student you can motivate) could use that code as a starting
> point but inspect a wider range of packet types.

That looks nice. Thank you. Among other packet parsing problems we've
long had is tearing apart radiocaps.

https://github.com/mfontanini/libtins/blob/master/tests/src/radiotap_test.cpp

>
>         Kathie
>
> On 7/30/18 11:11 AM, Dave Taht wrote:
> > Of mice, elephants, ants, and lemmings....
> >
> > I frequently take packet captures to look at actual traffic on my
> > production network, then look at them in wireshark or take them apart
> > via tcptrace. eyeball gives one measurement. Tcptrace gives me a
> > measurement of how many tcp flows were present over that interval, and
> > completed, but not udp. We can't easily measure udp quic traffic for
> > "completion", but we can look at peaks and valleys and the actual
> > presence of that "flow". DNS, and a zillion other sorts of
> > transactions (even arp), to me, count as one or two packet flows.
> >
> > Is there a tool out there that can pull out active flows of all sorts
> > from a cap?
> >
> > somewhat relevant paper: https://dl.acm.org/citation.cfm?id=987190
> >
> > There was a classic one (early 90s) on self similar behavior that I
> > cannot remember just now. Used to cite it....
> >
>
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-- 

Dave Täht
CEO, TekLibre, LLC
http://www.teklibre.com
Tel: 1-669-226-2619