Is it possible to measure the used bandwidth per udp/tcp port on linux?

Question

I am wondering if there is a way to measure bandwidth by a tcp/udp port under Linux?

Means I search for a way to be able to tell, tcp/53 needs now 1MBit/s, tcp/80 needs now 4.5MBit/s. iperf is able to tell me this details, but my issue is I need it in shell/bash to extract the data for later use.

Answer 1

i would recommend darkstat, a description on how to is available here

Answer 2

Just for completeness, the best and easiest way to monitor bandwidth per port or bunch of ports under Linux, is to use tc to setup QoS.

You can use FireQoS - a high level tool for configuring QoS - and netdata for monitoring it in real-time.

Check this for more information: https://github.com/firehol/netdata/wiki/You-should-install-QoS-on-all-your-servers