[frederic heem <frederic.heem@xxxxxxxxx>]

Hi,
Did you have a look at www.snort.org ? It may be what you are looking for.
Frederic Heem.


Alle 15:03, lunedì 30 ottobre 2006, Lars Ruoff ha scritto:
> Hi list,
>
> I wonder if Wireshark could be extended to provide real-time network
> issue detection and if there was any interest in the community to
> implement this feature.
>
> Let me explain.
> What i would like to have is the following:
> Wireshark (tshark to be precise) would be run from another application
> (let's call it the Monitor application). There would be a form of
> interprocess communication between Wireshark and the latter.
> Wireshark would capture packets, decode them and run certain analysis
> modules (console style "tap-listeners", as can be activated via the -z
> option).
> The analysis modules would be designed to detect alarm conditions that
> correspond to a certain network troubleshooting issue, for example,
> think of a module that monitors RTP voice conversations and reports
> whenever there is consecutive packet loss exceeding some threshold.
> Whenever an alarm condition is met, Wireshark would notify the Monitor
> application, and the latter would save the coresponding capture files.
> Wireshark would be run in multiple files option, but the Monitor would
> erase every written file after a while if no alarm condition has been
> met during that time. Only the capture files containing alarm conditions
> would be saved.
> The goal is to have the whole thing running over several days/weeks
> without filling up the HDD with unnecessary files.
>
> In fact i already have implemented an application that does just that!
> It was back on Ethereal 0.10.3 and i had to modify Ethereal in a few ways:
> - Include a form of interprocess communication with the calling Monitor.
> (was done using Windows IPC, certainly not a good choice, but it was the
> fastest possible way for me to do), including an ABI for the monitoring
> taps to use it.
> - Make Ethereal report whenever it switched to a new capture file.
> (- Mayeb other things i don't remember any more)
>
> Problems i had to cope with:
> - Ethereal was leaking memory which caused problems when running for
> several days. My workaround was to have Monitor relaunch Ethereal every
> now and then.
>
> Obviously, keeping up with Wireshark's release frequency is difficult
> for me.
> That is why i'm asking wether there would be interest in redesigning,
> adding and maintaining the Wireshark related part to the Wireshark
> source tree?
>
> best regards,
> Lars Ruoff
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> http://www.wireshark.org/mailman/listinfo/wireshark-dev


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