All IP connected to my host

netstat -lantp | grep ESTABLISHED |awk '{print $5}' | awk -F: '{print $1}' | sort -u
find all computer connected to my host through TCP connection.
Sample Output

By: bitbasher
2011-07-21 21:23:10

2 Alternatives + Submit Alt

What Others Think

Does not support IPv6. Returns first segment of address only. root@host:~# netstat -lantp | grep ESTABLISHED |awk '{print $5}' | awk -F: '{print $1}' | sort -u 2001
unixmonkey23784 · 547 weeks and 2 days ago
unixmonkey23784 --> Is it ok now (Don't have ipv6) # netstat -lantp | grep ESTABLISHED |awk '{print $5}' | awk '{print $1}' | sort -u (with ipv4, also display port due to the lack of "-F :") Hope it will be helpfull... First contribution ...
n3wborn · 547 weeks and 2 days ago
Options -l, -p and -a are useless in this netstat call. This command also misses *all* udp connections. Full list, sorted as in original post, would be given by: netstat -nut | awk '$NF=="ESTABLISHED" {print $5}' | cut -d: -f1 | sort -u
depesz · 547 weeks and 2 days ago
it is inefficient to pipe awk to awk.
Mozai · 547 weeks and 2 days ago
sudo netstat -nut | sed '/ESTABLISHED/!d;s/.*[\t ]\+\(.*\):.*/\1/'
plasticdoc · 547 weeks ago
shorter (thanks to the help of e36freak on freenode for the + sign that I missed) : netstat -nut | awk -F'[ :]+' '/SHED *$/{print $6}'
sputnick · 545 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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