Is there a way to discover what subnet a device is using?

Karl Auer kauer at biplane.com.au
Thu Mar 5 15:07:08 UTC 2020


On Thu, 2020-03-05 at 13:01 +0000, Chris Green wrote:
> I've tried guessing what LAN subnet it might be set up for and
> connecting to my laptop with the same subnet configured statically in
> the laptop.  The hardware interface comes up OK, gigabit duplex, but
> no actual data connection.  I can't try many subnets this way.

Ken already mentioned Wireshark. If the device has its MAC address
printed on it anywhere, that makes life even easier. Just filter on
that MAC address in Wireshark and look for traffic.

Regards, K.

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Karl Auer (kauer at biplane.com.au)
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