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Monitor TCP opened connections

Terminal - Monitor TCP opened connections
watch -n 1 "netstat -tpanl | grep ESTABLISHED"
2009-04-13 20:40:41
User: klipz
Functions: watch
13
Up
Down
Monitor TCP opened connections
Add to favourites | Report as malicious

Alternatives

There are 2 alternatives - vote for the best!

Terminal - Alternatives
watch "ss -nat | awk '"'{print $1}'"' | sort | uniq -c"
2012-12-07 19:07:33
User: ricardofunke
Functions: watch
Tags: monitoring netstat tcp ss connections
-2
Up
Down
Monitoring TCP connections number

Monitoring TCP connections number showing each state. It uses ss instead of netstat because it's much faster with high trafic.

You can fgrep specific ports by piping right before awk:

watch "ss -nat | fgrep :80 | awk '"'{print $1}'"' | sort | uniq -c"

Show sample output | Comments (2) | Add to favourites | Report as malicious

Know a better way?

If you can do better, submit your command here.

What others think

That's all fine and good until somebody fires up a p2p client.

Comment by TheMightyBuzzard 214 weeks ago

Oh, also the -l is redundant after you've already specified -a.

Comment by TheMightyBuzzard 214 weeks ago

also helpful would be the less obvious inclusion of sudo right before the netstat invocation. Nice tip klipz

Comment by linuxrawkstar 213 weeks and 6 days ago

sudo lsof -i -T -n

Comment by professoralex 210 weeks and 1 day ago

Your point of view

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