Questions tagged [netstat]
netstat (network statistics) is a command-line tool that displays network connections (both incoming and outgoing), routing tables, and a number of network interface statistics. It is available on Unix, Unix-like, and Windows NT-based operating systems.
netstat
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Who is listening on a given TCP port on Mac OS X?
On Linux, I can use netstat -pntl | grep $PORT or fuser -n tcp $PORT to find out which process (PID) is listening on the specified TCP port. How do I get the same information on Mac OS X?
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Port 80 is being used by SYSTEM (PID 4), what is that?
I am trying to use port 80 for my application server, but when I perform netstat -aon I get:
TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4
When I look up the process in task manager, it shows PID 4 is SYSTEM,...
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How to get default gateway in Mac OSX
I need to retrieve the default gateway on a Mac machine. I know that in Linux route -n will give an output from which I can easily retrieve this information. However this is not working in Mac OSX(...
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How to check if a network port is open?
How can I know if a certain port is open/closed on linux ubuntu, not a remote system, using python?
How can I list these open ports in python?
Netstat:
Is there a way to integrate netstat output ...
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Docker: any way to list open sockets inside a running docker container?
I would like to execute netstat inside a running docker container to see open TCP sockets and their statuses. But, on some of my docker containers, netstat is not available. Is there any way to get ...
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How do I find which application is using up my port? [closed]
I am unable to start GlassFish, because it keeps showing this error message:
SEVERE: Shutting down v3 due to startup exception : No free port within range: 8080=com.sun.enterprise.v3.services.impl....
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Docker and netstat: netstat is not showing ports, exposed by docker containers
I expose docker ports of my contaners to the host machine with something like
docker run -p 80:80 ...
then I try to display all listening ports for debugging purposes with netstat e.g.:
netstat -at
...
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61
votes
4
answers
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What does "Can not obtain ownership information" in Netstat -ab mean?
(Windows 7 x86)
If I run netstat -ab, I get a list of active connections, along with the names of the applications which have opened the connections.
However, some connections (including the one ...
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Starting apache fails (could not bind to address 0.0.0.0:80)
Update: Already fixed, it seems that one of VirtualHosts configurations files was wrong in sites-enabled.
I have Ubuntu 11.10
When I run the command to start apache2:
sudo /etc/init.d/apache2 start
...
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difference between netstat and ss in linux?
In linux, netstat command tells us information of active sockets in system.
I understand that netstat uses /proc/net/tcp to acquire the system network information.
Since netstat man page says that ...
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40
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2
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Use of Recv-Q and Send-Q
What is the use of the Recv-Q and Send-Q columns in netstat's output? How do I use use this in a realistic scenario?
On my system, both of the columns are always shown as zero. What is the meaning ...
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2
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Installing netstat on docker linux container
I want to install netstat on my Docker container.
I looked here https://askubuntu.com/questions/813579/netstat-or-alternative-in-docker-ubuntu-server-16-04-container so I'm trying to install it like ...
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3
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netstat showing foreign ports as kubernetes:port. What does this mean?
I am using a Windows 10 Pro machine.
When I run netstat, it is showing kubernetes:port as foreign address in active connections.
What does this mean? I have checked and there is no kubernetes ...
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How do I interpret 'netstat -a' output
Some things look strange to me:
What is the distinction between 0.0.0.0, 127.0.0.1, and [::]?
How should each part of the foreign address be read (part1:part2)?
What does a state Time_Wait, ...
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6
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Troubleshooting connections stuck in CLOSE_WAIT status
I have a Java application running in WebLogic 11g on Windows, which after several days, becomes unresponsive. One suspicious symptom I've noticed is that a large number of connections (about 3000) ...
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29
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3
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Debugging IDE's port connection to XDebug: "Waiting to Connect"
Preamble
Like many, I've spent more hours debugging my IDE’s connection to XDebug than I have using XDebug to debug my programs. I’ve gotten it to work repeatedly, but every once and a while I get ...
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When using Docker, ESTABLISHED connections don't appear in netstat
I have a docker container running on RHEL 7 with Docker 1.7.0. The program which running in this container listens for TCP connections on port 5000.
In my Dockerfile I put the sentence EXPOSE 5000 and ...
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25
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2
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Address already in use but nothing in netstat or lsof
I try to start the Python SimpleHTTPServer on port 7054 :
$ sudo python -m SimpleHTTPServer 7054
...
socket.error: [Errno 98] Address already in use
So, I ran the following commands :
$ sudo ...
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1
answer
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TCP connection owned by pid zero
I'm trying to ensure that a Windows service program (running on top of .NET) is properly releasing its network connections.
When running the service locally I know that it will create a lot of HTTP ...
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22
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1
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Node.js server only listening on ipv6
I am running a node.js server on port 5403. I can telent to the private ip on this port but cannot telnet to the public ip on the same port.
I assume the cause of this is because node.js is only ...
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1
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How do I access netstat data in Python?
I'm trying to need to access/parse all outgoing connections on a particular port number on a Linux machine using a Python script. The simplest implementation seems to be to open a subprocess for ...
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Tracking an application's network statistics (netstats) using ADB
I have a feeling this is possible, I'm just not quite sure where the information is held.
I want to get the up/down statistics for specific applications, but I want to do it using ADB and not ...
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17
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1
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netstat -na : udp and state established?
In an application (voip rtp media server), netstat -na on the server (172.16.226.3 bound to udp port 1286) gives the following line :
udp 0 0 172.16.226.3:1286 172.25.14.11:10000 ESTABLISHED
As an ...
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What could cause so many TIME_WAIT connections to be open?
So, I have application A on one server which sends 710 HTTP POST messages per second to application B on another server, which is listening on a single port. The connections are not keep-alive; they ...
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16
votes
1
answer
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Network Activity Monitoring on iPhone
I've been working for 5 days trying to learn and implement Network monitor on the iPhone.
I looked into netstat code from apple, and i lost like 25% of my hair.
I found links for JB Devices but i ...
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listing multicast sockets
I am trying to list all opened multicast sockets on a linux system? netstat -g lists the groups joined though. Is there any other utility that I can use for this sake?
Thanks a lot for the help.
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How to kill the application that is using a TCP port in C#?
I want to free a TCP port during startup of my application (asking confirmation to user), how to get the PID number and then, if the user confirm, kill it?
I know I can get this information by ...
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What are the differences between lsof and netstat on linux?
I encounted a problem today:
When I started HDP docker container, an error occured:
listen tcp 0.0.0.0:8086: bind: address already in use
According to error message, I know that port 8086 was ...
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How to find port number for a particular process id in unix? [closed]
In UNIX OS, how can I find the port number when i know the process name or pid ?
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Process started from system command in C inherits parent fd's
I have a sample application of a SIP server listening on both tcp and udp ports 5060.
At some point in the code, I do a system("pppd file /etc/ppp/myoptions &");
After this if I do a netstat -apn,...
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How to find a free TCP port
How do I find a completely free TCP port on a server? I have tried the command line;
netstat -an
but I am told the ones with a status of LISTENING are already being used.
I also tried a tool ...
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Tomcat Debug Error: Unable to open debugger port (127.0.0.1:63199): java.net.BindException "Address already in use: NET_Bind"
I woke up for work and started receiving this error, but I can't find this specific error anywhere.
I tried using netstat -ano to find any instances running on the aformentioned port, and also the ...
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How to use ADB shell to find the ports which a process is using?
For example, in Android, the PID of a process 1234 is using ports 2222,2223,2224. Now I have a PID 1234. I was wondering how to find out port numbers 2222, 2223, 2224 which the process is using?
I ...
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How To Monitor Network Activity From Within App?
I'm trying to monitor network activity on my iPhone from within an app I'm developing. Does iOS support a netstat-like command or something similar that can tell me what what inbound and outbound ...
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How to find out application name by PID (process id)
I'm trying to install VisualSVN server and have message "Specified TCP port is occupied by another service". How I can find what service or app is using the 443 port?
"netstat -aon" shows me only
...
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How to find the other point of a Unix domain socket on Mac OS X to write/read it?
I listed open file for a process (a daemon) on my box which runs Mac OS X 10.5 :
>lsof -p 89
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
...
xxxxx 89 xxxxxxxx 9u unix ...
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Extract IP from netstat output
The netstat output contains thing like...
tcp 0 0 0.0.0.0:80 221.126.149.99:51973 ESTABLISHED 23879/apache2
tcp 0 0 0.0.0.0:80 66.249.68.154:40883 ...
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The PID/Program name of netstat is dash even with sudo
developer@LinuxKernel:~> sudo netstat -elnopt
developer's password:
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State User ...
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Used port not showing up in netstat -a result
This issues started recently when I am trying to start active-mq (which by default starts on port 61616). But suddenly it stopped coming up with JVM_BIND issue on that port. The problem did not go ...
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Breaking out of FOR in batch
My current line of batch code is:
for /L %%a in (8000,1,8100) do netstat /a /n | find "%%a" | find "LISTENING" || set tmp_freeport=%%a && goto found
The idea is to find a free port that will ...
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Undefined error in httr call. httr output: Failed to connect to localhost port 14415 after 0 ms: Connection refused
After updating to RStudio Version 2022.12.0+353 (2022.12.0+353), I am unable to find a freeport using netstat.
I have never had this problem before. How do I fix this?
library(RSelenium)
library(...
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How to find the exact process, which is behind TCP connection to HTTP.SYS process
When I use netstat, I receive info like this - PID 4 means HTTP.SYS
Active Connections
Proto Local Address Foreign Address State PID
TCP 0.0.0.0:80 0.0....
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In mac terminal, how to check which port mysql is running?
I've done some research and found several places where people suggest using netstat to check which port a particular process is using.
But here is what I got:
myMac:~/Documents$ netstat -ap tcp | ...
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netstat does not show listening port of udp server?
I have the following udp server:
/************* UDP SERVER CODE *******************/
#include <stdio.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <string.h>
#...
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Remove netstat output (specifically Not all processes could be identified line)
I'm having trouble removing the output from the netstat command when I check if a current port is being used. I dont need the output of the command but rather just the error code.
Running netstat -...
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Equivalent of netstat -pant with the Mac
In Ubuntu, to see the listening process I used to do the following command netstat -pant I would get something similar to this
What is the equivalent command with the Mac ?
6
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3
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the command "netstat -p" doesn't display the pid
the shell command netstat -p , doesn't display the pid.
It displays "-" like this:
tcp 0 0 *:2181 *:53837 ESTABLISHED -
why?
It still display "-" although I use root to login.
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How do I run a PowerShell script as a service?
I created the script below to check my application's port 2025 and log the number of connections.
I need this script to run as a service on Windows with the name netstat_2025. Does anyone know if ...
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Netstat -ban (or -oan) equivalent in .NET
I'd like to know if a particular process is using a given port, i.e. netstat -ban. I came across using IPGlobalProperties to get the list of active connections, but this doesn't seem to include ...
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Android: HttpURLConnection doesn't disconnect
by running netstat on the server:
UNTIL A FEW DAYS AGO: I could see the connection being ESTABLISHED only for about a second, and then it would disappear from the list
NOW: it stays as ESTABLISHED for ...
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