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Questions tagged [netstat]

netstat is a tool for viewing active network connections, listeners and sockets.

netstat is a tool for viewing active network connections, listeners and sockets.

322 questions
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What address should the client connect the socket to

SOLVED SOLUTION: I tried the connection with a little server program and it works perfectly fine. I could connected it to 10.195.5.53. My problem is within the software of my client program it has not compiled correctly. I have a server in UNIX…
Pepe Moreno
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Netstat and ss doesn't see connection

I'm trying to find which application running on Kubernetes cluster is using a specific port to communicate with RabbitMQ cluster. On RabbitMQ I see that connection is coming from 192.168.1.10:34226. 192.168.1.10 is one of Kubernetes nodes. After…
QkiZ
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Docker networking IPv6 exposed

I'm running a small arm board providing some services within our local network. As I try to understand the ipv6 support of docker, I am quite confused about the results of my first tests. My network is controlled by a single route using dhcpv6,…
chrstnwhlrt
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Man in The Middle Attack, or something else?

I was wondering if someone could help me out with this problem. We have a webservice that is available only through https:// port 443. Using netstat I see that there is particular ip that tries to connect to the server. For example, all the other…
Nick_K
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Windows netstat vs WMIC bytes sent/received difference

I'm trying to understand the difference between the bytes sent/received values returned by both netstat and wmic on Windows. I'm having a hard time finding an explanation for the significant variation. Why is the byte count much higher when I use…
elti
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Opening A Port In Redhat Enterprise Linux Fails

I have a veritas backup server (windows server 2012) that I use for backup. One of the server I need to backup (Redhat Enterprise Linux 5.9) is failing to communicate with my backup server. I have checked the port that veritas backup uses , which…
Mussa
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Heavy TCP traffic on loopback

While trying to generate some test traffic on my loopback interface, I noticed there was so much noise there that the output from Wireshark was essentially useless, with tons of SYN/RST, ACK packets on port 4101 (which some Googling suggests has to…
Guilherme
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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 0x34f8990 0t0 ->0x34f8880 I 'd like…
yves Baumes
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Can't bind UDP socket but port is free

I've been struggling for a while now with this so maybe someone here is able to help me. I'm setting up a CS:GO server that's going to be running on port 27059. (This is a copy&paste from a working server, so I'm not posting config files used) When…
sysfiend
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How to diagnose netstat: no namelist

I had to replace an NIC on my HP Proliant Microserver, running FreeNAS 9.3 In my crashplan jail, I now get "netstat: no namelist" as a response when I execute the netstat command. How to I diagnose this? Could it be that the virtual NIC epair for…
Shawn de Wet
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iptable block outbound traffic for which binary?

Presently iptables is blocking all outbound traffic except for a few known/approved services. iptables logs a sample of each time it blocks (2/min), I am trying to figure out what is making the requests that IPTable blocks. Sep 17 06:30:39…
Tchambers
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What exactly constitutes a bad TCP segment?

What constitutes a bad segment as in bad segments received in the netstat output below? I would think a TCP header's checksum could do it, but are there other things? If a segment arrives after its timeout? Or if a duplicate segment arrives? $…
gdw2
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lsof doesn't show the established TCP connection

On my system, if I run the netstat for a port, it returns: $ netstat -nat | grep "60964" tcp 0 0 192.0.0.1:60964 0.0.0.0:* LISTEN tcp 59 0 192.0.0.1:60964 192.0.0.6:46962 …
brokenfoot
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Is it normal to have many connections from my own server ip when I ran netstat command?

I would like to know if is it normal to have many connections from my own server ip when I ran: netstat -tn 2>/dev/null | grep :80 | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -nr | head The command explanation can be found here:…
Christian Tjhai
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Why is SQL Server using all ephemeral ports connecting to itself and causing TIME_WAITs?

I've got an AWS server with Windows 2008 R2, SQL Server 2012, and Tomcat 7. When I run netstat -ano the screen is flooded with TIME_WAIT. I posted the output in a Gist. When I run CurrPorts, filter on port 1433, and turn on Auto Refresh, I can see…
jordanbtucker
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