pktstat - 1.8.5-8 main

pktstat displays a real-time list of active connections seen on a
network interface, and how much bandwidth is being used by what.
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It partially decodes HTTP and FTP protocols to show what filename is
being transferred, as well as X11 application names. Entries hang
around on the screen for a few seconds so you can see what just
happened.
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It also accepts BPF expressions.