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mkramer777Flag for United States of America

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any way to see what ip on network is uploading data

Is there an easy way on our network to see who is uploading a large file that is killing our internet speed?  Our ISP says that our connection is pegged because some device is uploading a large amount of data.  Is their a free software that can be used to see what IP address this is?  Network is windows 2012 environment.
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noci

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Your router might be able to do this, and your firewall really should be able to do this. It is very device specific. What do you have at your network edge? It would need to be able to see the private IP of devices before it gets NAT to public.
Take noci's advice.

Startup tshark/wireshark or tcpdump.

Better to test + know, than guess.