Peter, for dumping packets please use tcodump -s 0 -w my.pcap … or wireshark.
Luca > On 17 Aug 2016, at 11:28, Peter Shute <[email protected]> wrote: > > Thanks, should I generate the pcap file with the --dump-pkts parameter? I > suspect with -i none that there will be nothing dumped, but I'll check. > > Sent from my iPad > >> On 17 Aug 2016, at 6:54 PM, Luca Deri <[email protected]> wrote: >> >> Peter >> please file an issue on https://github.com/ntop/nProbe/issues and attach a >> pcap file. I need to see what nprobe is receiving before commenting. Please >> make sure you also add “-i none” >> >> Thanks Luca >> >>> On 17 Aug 2016, at 04:17, Peter Shute <[email protected]> wrote: >>> >>> I still haven't made any progress with this. I've now installed Wireshark, >>> and followed these instructions to prove to myself that the NetFlow data is >>> arriving at my PC: >>> https://communities.ca.com/docs/DOC-231149629 >>> >>> So why does this command collect no data? >>> nprobe /c -i none -n none --collector-port 9996 -V9 -P c:\temp\nprobe >>> >>>> -----Original Message----- >>>> From: [email protected] [mailto:ntop-misc- >>>> [email protected]] On Behalf Of Peter Shute >>>> Sent: Monday, 15 August 2016 4:00 PM >>>> To: '[email protected]' <[email protected]> >>>> Subject: [Ntop-misc] Collecting NetFlow data with nprobe >>>> >>>> Our ISP has configured several internet routers to send NetFlow data on >>>> port >>>> 9996 to a particular machine. I have successfully configured PRTG to get >>>> the >>>> data to see lists of top recipients, etc, so I know this machine is >>>> receiving the >>>> NetFlow data ok, but it doesn't store the flows for later analysis, so I've >>>> disabled it. How do I configure nprobe to get the flow into a file I can >>>> analyse? >>>> >>>> I'm confused about which mode nprobe needs to be used in to collect the >>>> data. I've tried this: >>>> nprobe /c --collector 192.168.0.203:9996 -V9 -P c:\temp\nprobe but it >>>> seems >>>> to be collecting local traffic. In among it, I can see that there are >>>> flows from >>>> the router to this machine on port 9996. What I need is the flow >>>> information >>>> inside those packets. >>>> >>>> I tried this: >>>> nprobe /c -i none -n none --collector-port 9996 -V9 -P c:\temp\nprobe but >>>> it >>>> collects nothing. >>>> >>>> Where am I going wrong? I'm not sure if I usderstand the differences >>>> between probe mode, collector mode and proxy mode. I need collector >>>> mode, don't I? >>>> >>>> Peter Shute >>>> _______________________________________________ >>>> Ntop-misc mailing list >>>> [email protected] >>>> http://listgateway.unipi.it/mailman/listinfo/ntop-misc >>> _______________________________________________ >>> Ntop-misc mailing list >>> [email protected] >>> http://listgateway.unipi.it/mailman/listinfo/ntop-misc >> >> _______________________________________________ >> Ntop-misc mailing list >> [email protected] >> http://listgateway.unipi.it/mailman/listinfo/ntop-misc > _______________________________________________ > Ntop-misc mailing list > [email protected] > http://listgateway.unipi.it/mailman/listinfo/ntop-misc _______________________________________________ Ntop-misc mailing list [email protected] http://listgateway.unipi.it/mailman/listinfo/ntop-misc
