Iftop


This generates curses bar graphs showing bandwidth per host or per connection. That is, it can group all bandwidth per host, or group by individual connections. The view is updated quickly, but also includes a weighted average, so this balances spikes with trends. The top two connections over the last 10 seconds always appear at the top. Bandwidth numbers are shown for the last 2,10, and 40 seconds. Iftop supports libpcap-style filters, so you can look at just certain types of traffic.

iftop -i eth0 -p -P -n -N
iftop -i eth0 -p -n -N
iftop -i eth0 -p -P -n -N -f "net 192.168.1.16 and not net 192.168.1.14"
iftop -i eth0 -p -P -n -N -f "port 80"

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This information may have errors; It is not permissible to be read by anyone who has ever met a lawyer.
Use is confined to Engineers with more than 370 course hours of electronic engineering for theoretical studies.
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