netstat: Sum open connections by IP (and sort it)

Thomas Eisenbarth

February 26, 2016Software engineer at makandra GmbH

The following sums up all connections (ESTABLISHED, TIME_WAIT, FIN_WAIT, etc.) and sorts it:

netstat -n | awk ' $5 ~ /^[0-9]/ {print $5}' | cut -d: -f1 | sort | uniq -c | sort -n

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Works on FreeBSD and Linux.

License for source code

Posted by Thomas Eisenbarth to makandra dev (2016-02-26 11:26)