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Commands using netstat from sorted by
Terminal - Commands using netstat - 108 results
netstat -Aan | grep .80 | grep -v 127.0.0.1 | grep EST | awk '{print $6}' | cut -d "." -f1,2,3,4 | sort | uniq
2012-02-03 13:54:11
User: janvanderwijk
Functions: awk cut grep netstat sort
Tags: sort uniq grep netstat cut aix
0
Up
Down
See who are using a specific port

See who is using a specific port. Especially when you're using AIX. In Ubuntu, for example, this can easily be seen with the netstat command.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -tan | awk '$1 == "tcp" && $4 ~ /:/ { port=$4; sub(/^[^:]+:/, "", port); used[int(port)] = 1; } END { for (p = 32768; p <= 61000; ++p) if (! (p in used)) { print p; exit(0); }; exit(1); }'
2012-01-26 20:42:56
User: wirawan0
Functions: awk netstat
0
Up
Down
find an unused unprivileged TCP port

This is also perl-less, and only uses AWK as its postprocessor. Tested with GAWK and MAWK.

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -a --numeric-ports | grep 8321
2012-01-20 22:00:56
User: peter4512
Functions: grep netstat
Tags: net tcp
1
Up
Down
tell if a port is in use

if you don't do --numeric-ports, netstat will try to resolve them to names

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -plantu
2012-01-19 00:18:43
User: player27
Functions: netstat
1
Up
Down
Show all listening and established ports TCP and UDP together with the PID of the associated process

Easy to remenber. Fot TCP only use: netstat -plant

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -anpe
2011-12-06 18:27:09
User: anarcat
Functions: netstat
Tags: Network status diagnostic
1
Up
Down
Lists all listening ports together with the PID of the associated process

Lists all opened sockets (not only listeners), no DNS resolution (so it's fast), the process id and the user holding the socket.

Previous samples were limiting to TCP too, this also lists UDP listeners.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -atn | grep :22 | grep ESTABLISHED | awk '{print $4}' | sed 's/:22//'
2011-11-09 10:51:55
User: agambier
Functions: awk grep netstat sed
-2
Up
Down
list current ssh clients
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -plntu
2011-10-01 12:16:38
User: bolthorn0
Functions: netstat
Tags: netstat lsof networking
1
Up
Down
check open ports (both ipv4 and ipv6)

Check open TCP and UDP ports

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -plnt
2011-09-30 19:56:32
User: DopeGhoti
Functions: netstat
Tags: netstat lsof networking
7
Up
Down
check open ports (both ipv4 and ipv6)

While `lsof` will work, why not use the tool designed explicitly for this job?

(If not run as root, you will only see the names of PID you own)

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
while true ; do sleep 1 ; clear ; (netstat -tn | grep -P ':36089\s+\d') ; done
2011-09-28 11:39:43
User: hute37
Functions: clear grep netstat sleep true
-3
Up
Down
Monitoring a port connections

shell loop to scan netstat output avoiding loolback aliases (local/remote swap for local connections)

Show sample output | Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -rn | convert label:@- netstat.png
2011-09-21 11:52:28
User: appanax
Functions: netstat
0
Up
Down
Command results as an image capture

We use the "convert" command (ImageMagick package) : see man convert (http://www.ma.utexas.edu/cgi-bin/man-cgi?convert+1)

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -tn | awk 'NR>2 {print $6}' | sort | uniq -c | sort -rn
2011-09-12 23:29:39
User: evandrix
Functions: awk netstat sort uniq
8
Up
Down
Quick network status of machine

credit to tumblr engineering blog @ http://engineering.tumblr.com/

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
sudo netstat|head -n2|tail -n1 && sudo netstat -a|grep udp && echo && sudo netstat|head -n2|tail -n1 && sudo netstat -a|grep tcp
2011-09-08 18:54:36
User: brando56894
Functions: echo grep head netstat sudo tail
Tags: netstat udp tcp connections
0
Up
Down
Displays All TCP and UDP Connections
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -an |grep ":80" |awk '{print $5}' | sed s/::ffff://g | cut -d: -f1 |sort |uniq -c |sort -n | tail -1000 | grep -v "0.0.0.0"
2011-07-28 09:36:08
User: zeros
Functions: awk cut grep netstat sed sort tail uniq
0
Up
Down
Find all IP connected to my host through TCP connection and count it

Count and Find all IP connected to my host through TCP connection.

Show sample output | Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -nut | sed '/ESTABLISHED/!d;s/.*[\t ]\+\(.*\):.*/\1/' | sort -u
2011-07-27 07:25:25
User: bitbasher
Functions: netstat sed sort
0
Up
Down
All IP connected to my host
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -nut | awk '$NF=="ESTABLISHED" {print $5}' | cut -d: -f1 | sort -u
2011-07-27 07:24:10
User: bitbasher
Functions: awk cut netstat sort
-1
Up
Down
All IP connected to my host

find all computer connected to my host through TCP connection

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -lantp | grep ESTABLISHED |awk '{print $5}' | awk -F: '{print $1}' | sort -u
2011-07-21 21:23:10
User: bitbasher
Functions: awk grep netstat sort
16
Up
Down
All IP connected to my host

find all computer connected to my host through TCP connection.

Show sample output | Comments (6) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -nt | awk -F":" '{print $2}' | sort | uniq -c
2011-07-05 07:53:29
User: sreimann
Functions: awk netstat sort uniq
Tags: sort awk uniq netstat
0
Up
Down
netstat with group by (ip adress)

count connections, group by IP and port

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -ntu | awk ' $5 ~ /^[0-9]/ {print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
2011-07-04 20:23:21
User: letterj
Functions: awk cut netstat sort uniq
Tags: netstat
-3
Up
Down
netstat with group by (ip adress)

netstat has two lines of headers:

Active Internet connections (w/o servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

Added a filter in the awk command to remove them

Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -ntu | awk ' $5 ~ /^[0-9]/ {print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
2011-07-01 11:17:38
User: Koobiac
Functions: awk cut netstat sort uniq
Tags: netstat
2
Up
Down
netstat with group by (ip adress)
Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -nt | awk '{print $6}' | sort | uniq -c | sort -n -k 1 -r
2011-06-21 16:27:19
User: dennisfaust
Functions: awk netstat sort uniq
1
Up
Down
Summarize the number of open TCP connections by state

Useful for checking the number and state of TCP connections.

Show sample output | Comments (1) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -n -f inet|awk '/\.389/{print $2}'|cut -f1-4 -d.|sort -u
2011-06-20 14:24:05
User: guptavi
Functions: awk cut netstat sort
1
Up
Down
To find the LDAP clients connected to LDAP service running on Solaris
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
watch -n 2 netstat -antu
2011-06-02 23:27:33
User: wilbercarmona
Functions: netstat watch
0
Up
Down
Watch netstat output every 2 seconds
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -ntu | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
2011-05-25 20:53:34
User: unixmonkey21979
Functions: awk cut netstat sort uniq
0
Up
Down
get the IP connected to the server (usefull to detect IP that should be blocked)
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
netstat -lnptu
2011-05-19 21:16:35
User: mariusbutuc
Functions: netstat
0
Up
Down
Active Internet connections (only servers)
Comments (0) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate
while sleep 1; do date; (netstat -a -n | grep 80) ; done
2011-05-16 07:56:56
User: hute37
Functions: grep netstat sleep
Tags: netstat logging
-4
Up
Down
Polls fos network port usage
Comments (2) | Add to favourites | Report as malicious | Submit alternative | Report as a duplicate