Version 2 (modified by 13 years ago) ( diff ) | ,
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using iftop
If you've got a gateway machine for a LAN, and the LAN is seeing congestion on the upstream link, you might want to figure out which client is causing the most traffic.
You should:
apt-get install iftop
then, (also as the superuser), do:
iftop -i "$LAN"
(where $LAN
is the name of your internally-connected interface).
then press s
once to "hide the source hosts" (this seems backwards to me -- shouldn't it be "dest"?), which causes iftop
to aggregate throughput by local machines. you can then press 1, 2, or 3 to sort by total traffic in the last 2, 10, or 40 seconds, respectively. If there's a single culprit, it should rise to the top.
Note:
See TracWiki
for help on using the wiki.