how to use netstat on a specific port in Linux
14
Guys i want to know if my specific port is running a server using netstat? how do i achieve that?
linux networking netstat
migrated from stackoverflow.com May 31 '13 at 9:27
This question came from our site for professional and enthusiast programmers.
add a comment |
14
Guys i want to know if my specific port is running a server using netstat? how do i achieve that?
linux networking netstat
migrated from stackoverflow.com May 31 '13 at 9:27
This question came from our site for professional and enthusiast programmers.
1
netstat -anp | grep portNumber
– rags
May 31 '13 at 5:47
add a comment |
14
14
14
3
Guys i want to know if my specific port is running a server using netstat? how do i achieve that?
linux networking netstat
Guys i want to know if my specific port is running a server using netstat? how do i achieve that?
linux networking netstat
linux networking netstat
asked May 31 '13 at 5:37
Monkey
migrated from stackoverflow.com May 31 '13 at 9:27
This question came from our site for professional and enthusiast programmers.
migrated from stackoverflow.com May 31 '13 at 9:27
This question came from our site for professional and enthusiast programmers.
1
netstat -anp | grep portNumber
– rags
May 31 '13 at 5:47
add a comment |
1
netstat -anp | grep portNumber
– rags
May 31 '13 at 5:47
1
1
netstat -anp | grep portNumber
– rags
May 31 '13 at 5:47
netstat -anp | grep portNumber
– rags
May 31 '13 at 5:47
add a comment |
3 Answers
3
active
oldest
votes
15
You can use
netstat -pnlt | grep ':portno'
another option , you can use nmap tool for checking open ports on the server
nmap -sT -O localhost
Output
Starting nmap 3.55 ( http://www.insecure.org/nmap/ ) at 2004-09-24 13:49 EDT
Interesting ports on localhost.localdomain (127.0.0.1):
(The 1653 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
111/tcp open rpcbind
Device type: general purpose
Netstat Example :
[root@krizna ~]# netstat -pnlt | grep ':80'
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 :::80 :::* LISTEN 1164/httpd
answered May 31 '13 at 7:47
kriznakrizna
33114
and what part there in the results i can determine if it is a server?
– Monkey
May 31 '13 at 7:50
Check the netstat example part, port :::80 is shown under local address which is LISTENING ( i mean open ).
– krizna
May 31 '13 at 8:14
It is worth mentioning that the grep ':portno' may also pick up some IPv6 addresses that happen to contain that sequence. That can be a problem if you try to use this command in a script.
– Kevin Keane
Aug 27 '18 at 18:54
add a comment |
2
use netstat -anp | grep portNumber
answered May 31 '13 at 5:54
ragsrags
1215
so im getting list of many port 80 connections. how do i find the server port?
– Monkey
May 31 '13 at 6:10
add a comment |
2
I think netstat -nat | grep port | grep LISTEN should do the trick.
This is listing all ports, and then grep for listening ports. Instead it should just show the listening ports with-linstead of-a. And the question was not only about tcp ports so the-toption shouldn't be there.
– Paul Tobias
Mar 24 '16 at 8:17
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
15
You can use
netstat -pnlt | grep ':portno'
another option , you can use nmap tool for checking open ports on the server
nmap -sT -O localhost
Output
Starting nmap 3.55 ( http://www.insecure.org/nmap/ ) at 2004-09-24 13:49 EDT
Interesting ports on localhost.localdomain (127.0.0.1):
(The 1653 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
111/tcp open rpcbind
Device type: general purpose
Netstat Example :
[root@krizna ~]# netstat -pnlt | grep ':80'
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 :::80 :::* LISTEN 1164/httpd
answered May 31 '13 at 7:47
kriznakrizna
33114
and what part there in the results i can determine if it is a server?
– Monkey
May 31 '13 at 7:50
Check the netstat example part, port :::80 is shown under local address which is LISTENING ( i mean open ).
– krizna
May 31 '13 at 8:14
It is worth mentioning that the grep ':portno' may also pick up some IPv6 addresses that happen to contain that sequence. That can be a problem if you try to use this command in a script.
– Kevin Keane
Aug 27 '18 at 18:54
add a comment |
15
You can use
netstat -pnlt | grep ':portno'
another option , you can use nmap tool for checking open ports on the server
nmap -sT -O localhost
Output
Starting nmap 3.55 ( http://www.insecure.org/nmap/ ) at 2004-09-24 13:49 EDT
Interesting ports on localhost.localdomain (127.0.0.1):
(The 1653 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
111/tcp open rpcbind
Device type: general purpose
Netstat Example :
[root@krizna ~]# netstat -pnlt | grep ':80'
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 :::80 :::* LISTEN 1164/httpd
answered May 31 '13 at 7:47
kriznakrizna
33114
and what part there in the results i can determine if it is a server?
– Monkey
May 31 '13 at 7:50
Check the netstat example part, port :::80 is shown under local address which is LISTENING ( i mean open ).
– krizna
May 31 '13 at 8:14
It is worth mentioning that the grep ':portno' may also pick up some IPv6 addresses that happen to contain that sequence. That can be a problem if you try to use this command in a script.
– Kevin Keane
Aug 27 '18 at 18:54
add a comment |
15
15
15
You can use
netstat -pnlt | grep ':portno'
another option , you can use nmap tool for checking open ports on the server
nmap -sT -O localhost
Output
Starting nmap 3.55 ( http://www.insecure.org/nmap/ ) at 2004-09-24 13:49 EDT
Interesting ports on localhost.localdomain (127.0.0.1):
(The 1653 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
111/tcp open rpcbind
Device type: general purpose
Netstat Example :
[root@krizna ~]# netstat -pnlt | grep ':80'
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 :::80 :::* LISTEN 1164/httpd
answered May 31 '13 at 7:47
kriznakrizna
33114
You can use
netstat -pnlt | grep ':portno'
another option , you can use nmap tool for checking open ports on the server
nmap -sT -O localhost
Output
Starting nmap 3.55 ( http://www.insecure.org/nmap/ ) at 2004-09-24 13:49 EDT
Interesting ports on localhost.localdomain (127.0.0.1):
(The 1653 ports scanned but not shown below are in state: closed)
PORT STATE SERVICE
22/tcp open ssh
25/tcp open smtp
111/tcp open rpcbind
Device type: general purpose
Netstat Example :
[root@krizna ~]# netstat -pnlt | grep ':80'
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 :::80 :::* LISTEN 1164/httpd
answered May 31 '13 at 7:47
kriznakrizna
33114
answered May 31 '13 at 7:47
kriznakrizna
33114
answered May 31 '13 at 7:47
kriznakrizna
33114
answered May 31 '13 at 7:47
kriznakrizna
33114
33114
and what part there in the results i can determine if it is a server?
– Monkey
May 31 '13 at 7:50
Check the netstat example part, port :::80 is shown under local address which is LISTENING ( i mean open ).
– krizna
May 31 '13 at 8:14
It is worth mentioning that the grep ':portno' may also pick up some IPv6 addresses that happen to contain that sequence. That can be a problem if you try to use this command in a script.
– Kevin Keane
Aug 27 '18 at 18:54
add a comment |
and what part there in the results i can determine if it is a server?
– Monkey
May 31 '13 at 7:50
Check the netstat example part, port :::80 is shown under local address which is LISTENING ( i mean open ).
– krizna
May 31 '13 at 8:14
It is worth mentioning that the grep ':portno' may also pick up some IPv6 addresses that happen to contain that sequence. That can be a problem if you try to use this command in a script.
– Kevin Keane
Aug 27 '18 at 18:54
and what part there in the results i can determine if it is a server?
– Monkey
May 31 '13 at 7:50
and what part there in the results i can determine if it is a server?
– Monkey
May 31 '13 at 7:50
Check the netstat example part, port :::80 is shown under local address which is LISTENING ( i mean open ).
– krizna
May 31 '13 at 8:14
Check the netstat example part, port :::80 is shown under local address which is LISTENING ( i mean open ).
– krizna
May 31 '13 at 8:14
It is worth mentioning that the grep ':portno' may also pick up some IPv6 addresses that happen to contain that sequence. That can be a problem if you try to use this command in a script.
– Kevin Keane
Aug 27 '18 at 18:54
It is worth mentioning that the grep ':portno' may also pick up some IPv6 addresses that happen to contain that sequence. That can be a problem if you try to use this command in a script.
– Kevin Keane
Aug 27 '18 at 18:54
add a comment |
2
use netstat -anp | grep portNumber
answered May 31 '13 at 5:54
ragsrags
1215
so im getting list of many port 80 connections. how do i find the server port?
– Monkey
May 31 '13 at 6:10
add a comment |
2
use netstat -anp | grep portNumber
answered May 31 '13 at 5:54
ragsrags
1215
so im getting list of many port 80 connections. how do i find the server port?
– Monkey
May 31 '13 at 6:10
add a comment |
2
2
2
use netstat -anp | grep portNumber
answered May 31 '13 at 5:54
ragsrags
1215
use netstat -anp | grep portNumber
answered May 31 '13 at 5:54
ragsrags
1215
answered May 31 '13 at 5:54
ragsrags
1215
answered May 31 '13 at 5:54
ragsrags
1215
answered May 31 '13 at 5:54
ragsrags
1215
1215
so im getting list of many port 80 connections. how do i find the server port?
– Monkey
May 31 '13 at 6:10
add a comment |
so im getting list of many port 80 connections. how do i find the server port?
– Monkey
May 31 '13 at 6:10
so im getting list of many port 80 connections. how do i find the server port?
– Monkey
May 31 '13 at 6:10
so im getting list of many port 80 connections. how do i find the server port?
– Monkey
May 31 '13 at 6:10
add a comment |
2
I think netstat -nat | grep port | grep LISTEN should do the trick.
This is listing all ports, and then grep for listening ports. Instead it should just show the listening ports with-linstead of-a. And the question was not only about tcp ports so the-toption shouldn't be there.
– Paul Tobias
Mar 24 '16 at 8:17
add a comment |
2
I think netstat -nat | grep port | grep LISTEN should do the trick.
This is listing all ports, and then grep for listening ports. Instead it should just show the listening ports with-linstead of-a. And the question was not only about tcp ports so the-toption shouldn't be there.
– Paul Tobias
Mar 24 '16 at 8:17
add a comment |
2
2
2
I think netstat -nat | grep port | grep LISTEN should do the trick.
I think netstat -nat | grep port | grep LISTEN should do the trick.
answered May 31 '13 at 6:54
wizard
This is listing all ports, and then grep for listening ports. Instead it should just show the listening ports with-linstead of-a. And the question was not only about tcp ports so the-toption shouldn't be there.
– Paul Tobias
Mar 24 '16 at 8:17
add a comment |
This is listing all ports, and then grep for listening ports. Instead it should just show the listening ports with-linstead of-a. And the question was not only about tcp ports so the-toption shouldn't be there.
– Paul Tobias
Mar 24 '16 at 8:17
This is listing all ports, and then grep for listening ports. Instead it should just show the listening ports with
-l instead of -a. And the question was not only about tcp ports so the -t option shouldn't be there.– Paul Tobias
Mar 24 '16 at 8:17
This is listing all ports, and then grep for listening ports. Instead it should just show the listening ports with
-l instead of -a. And the question was not only about tcp ports so the -t option shouldn't be there.– Paul Tobias
Mar 24 '16 at 8:17
add a comment |
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1
netstat -anp | grep portNumber
– rags
May 31 '13 at 5:47