Another suggestion - see if you can find or borrow on old-style "ethernet hub". Not the more modern "switch" variety, but an old-fashioned hub - the kind that broadcast all traffic on all its ports. If you can get one of these then you can put your traffic-collector on a separate machine and that way the monitoring doesn't interfere with the activity. Jeremy's recommendation of tcpdump/Wireshark is right on target. Cheers.....Peter Jeremy Thompson <jeremy@warehousesports.com> wrote:

There are a couple of things you will need to do whether you use tools to capture information or write your own code. The device will need to have some sort of shell access and tools built in to packet capture. If its a OS X, BSD, Linux machine you will be able to use tcpdump. You can send that capture to a file and process with a tool. I would recommend Wireshark. Wireshark can capture as well but if the machine can't run it or doesn't have a gui you will need to capture and then process on your machine. If the device is fairly locked down you'll need to mirror the switch port its connected to. On the mirrored port you can use Wireshark, tcpdump, or your own code to do a capture.

-- Jeremy Thompson Sports Warehouse Inc. jeremy@warehousesports.com

...

On Jun 8, 2015, at 1:35 PM, Fabian Jäger <fabian.jaeger@chungwasoft.com> wrote:

Dear experts, is it possible to monitor the inbound/outbound traffic of a particular network device? I would like to print some statistics and would need the byte/s information...

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