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I use a good program: nethogs,is like a "top" for tcp traffic someone know something similar for udp? I want to see the udp bandwitch used by program

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    If you only want to monitor, you can use iptraf, It's very powerful. Commented Apr 21, 2015 at 19:44
  • Mmm...nethogs is better because give me the top apps tcp consuming i want something like this for udp Commented Apr 21, 2015 at 19:46

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I compiled the last nethogs from the github repo and I found that they added UDP too:

nethogs -h

-C : capture TCP and UDP.

just download the master folder from github and do make to test it...

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  • Thanks, this made it show traffic more realistically for me. It shows Zoom's traffic though as root unknown UDP. Commented Oct 2, 2020 at 20:05
  • Excellent. I was wondering whether a certain computer would be getting the UDP heavy load and it does... I can see it reaches 2Mb/s on that port as well. Commented Jan 1, 2021 at 23:31
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You can use ntop:

ntop - display top network users

Also :

ntop shows the current network usage. It displays a list of hosts that are currently using the network and reports information concerning the (IP and non-IP) traffic generated and received by each host. ntop may operate as a front-end collector (sFlow and/or netFlow plugins) or as a stand-alone collector/display program. A web browser is needed to access the information captured by the ntop program.

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    I only found ntopng in www.ntop.org. It's difficult to install and use. I quit. The application might have changed. Commented Mar 26, 2023 at 15:47

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