The netstat tag has no wiki summary.
1
vote
2answers
48 views
How to measure bandwidth within the last 15 minutes?
I would like to log my bandwidth into a database and find out when my windows server 2003 is being used the most.
I want to feed the database with the bandwidth passed from the last feed (let's say ...
1
vote
1answer
45 views
How to reset netstat -e counters
I would like to reset netstat -e counters.
How can I do it?
Renewing the network interface may reset these counters, but it is NOT an option - the networking must not be interrupted.
My OS is ...
0
votes
1answer
26 views
size of packet icmp with netstat TX
I am confused with the size of packet icmp. I just did a simple initial netstat, where
for eth0 : TX-OK = 485
after 1 ping message is send, again I see in netstat TX-OK = 488
So, I just want to know ...
0
votes
1answer
34 views
restart counter in netstat
I am using Ubuntu.
I need to count the number of packet received in a specific interface. I found this can be done using netstat. However, I need to count starting from t=zero until a specific time I ...
1
vote
0answers
61 views
netstat -e: high discards and errors
I think my network is congested because of the relatively large discards and errors data. They should be zero or at least close to that.
Here is the output of netstat -e on my computer:
Interface ...
1
vote
1answer
34 views
What's the difference between Send-Q and S-BCNT in FreeBSD netstat -anx?
What's the exact meaning of Send Buffer byte count in the extended netstat statistics, and why is it always bigger than Send-Q?
In other words, what's counted against the S-BCNT that's not counted ...
1
vote
3answers
130 views
Linux : restricting outgoing on an application basis
I typed :
netstat -atlpvn
and noticed that applications like gedit and python had foreign addresses outside the network (the network being a single computer connected to the internet).
Is there ...
1
vote
4answers
172 views
Netstat: How to know if it's Human or Bot/Spider/DDOS
I'm using the following command to check how many connections I have from a single ip
netstat -anp |grep ':80' | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n
If it's DDOS attack(500+ ...
1
vote
2answers
82 views
Understanding the netstat command output
I used netstat command recently, and the output is below.
netstat -a
proto local address foreign address state
tcp 127.0.0.1:1107 avinash-pc:0 listening
tcp ...
1
vote
1answer
47 views
Process killing trouble
I am trying to program a server software which involves a lot of testing on java / scala platform. Whenever i compile and execute the code. It starts listening on port 80. Sometimes i need to ...
1
vote
2answers
80 views
netstat doesn't display full remote ip address, no ip address for ssl, port 443
We're running a Apache webserver on Arch Linux (build from May '10) and while monitoring connections with netstat we're seeing some odd connections on port 443 that don't report an IP address; is this ...
1
vote
2answers
232 views
analyse TCP performance by interpreting “netstat -s”
I have executed netstat -s on my dedicated server running debian. I'd like to interprete the results because I'm experiencing connectivity problems with TCP. I don't know how to read these results. ...
1
vote
1answer
78 views
FreeBSD netstat -di, Idrop vs Drop and drop count from NIC or kernel?
On FreeBSD what's the difference between Drop and Idrop in the netstat output?
$ netstat -di
Name Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs Coll Drop
bge0* 1500 ...
1
vote
2answers
204 views
How to kill a TCP connection using tcpkill utility
I'm trying to kill an ESTABLISHED TCP connection using tcpkill. The connection is an open HTTPS connection. It appears on netstat as:
tcp 0 0 X.X.X.X:55601 X.X.X.X:https ...
2
votes
2answers
347 views
netstat and ip_conntrack connection count differ by order of magnitude. Why?
in /proc/net/ip_conntrack I have:
established 3076
time_wait 4346
total 7468
and in netstat I have:
established 1051
time_wait 73
total 1165
Why is that? Where are other connections? How to ...
4
votes
3answers
215 views
netstat shows a listening port with no pid but lsof does not
This question is similar to Network port open, but no process attached?
I've tried everything from there, reviewed the logs, etc... and can't find anything.
My netstat shows a TCP listening port and ...
1
vote
2answers
300 views
Can ping an ip but does not show up in netstat?
I was wondering if someone would be able to help me with a head scratcher. We have a device that has communicated with our server but is not sending back any data.
I am able to ping the IP address ...
0
votes
1answer
67 views
When Does the Linux & Windows' Samba Port Connection Close?
After connecting to a samba share, then disconnecting, netstat still shows that the ports are ESTABLISHED, even when the clients are on SUSPEND, HIBERNATE, or have SHUTDOWN. Looking over the samba ...
4
votes
2answers
564 views
TIME_WAIT connections not being cleaned up after timeout period expires
I am stress testing one of my servers by hitting it with a constant stream of new network connections, the tcp_fin_timeout is set to 60, so if I send a constant stream of something like 100 requests ...
0
votes
2answers
67 views
Problem with too many local connections
I have a problem with my server (VPS). It's veeery slow.
Checking the connections with netstat, there are a lot of internal connections. I don't understand why!
It's normal all this connections?
# ...
0
votes
1answer
169 views
FileMaker Server not listening on Port 2399 for ODBC/JDBC
I am trying to create a ODBC connection from an OSX machine to a Filemaker server 10 using a DataDirect SeQuel Link 5.5 JDBC drive. I have ODBC/JDBC enabled on the server and I followed all of the ...
0
votes
2answers
36 views
WinServer 2003: Cant find process holding onto ports
We have a couple of production WCF services failing to start because their ports are apparently in use by another process. I have done a netstat -ano and found the PID's that are using these ports, ...
0
votes
0answers
133 views
lots of packets pruned and packets collapsed because of socket buffer low/overrun
i've set up a test machine (debian squeeze 2.6.32 on a linode 2048 machine) that interact with an api that returns large chunks of json. It calls the API 3000/minutes asynchronously, the api is ...
0
votes
1answer
330 views
Is this normal? Multiple httpd process
I'm testing a new Server. This isnt really a peak time for my server (2pm), but still its running a bit slow, I was checking the ESTABLISHED connections using the following command:
# netstat -ntu | ...
3
votes
2answers
165 views
What does each field of netstat -ano mean?
tcp 0 0 219.155.32.195:8888 221.137.227.51:5943 TIME_WAIT timewait (58.45/0/0)
tcp 0 0 219.155.32.195:8888 221.137.227.51:5936 TIME_WAIT timewait ...
1
vote
0answers
125 views
High count packets rejects in established connections because of timestamp
I am trying to set up a Wowza media server using a Dell R710 with 24GB memory and a 10Gbit connection and all the calculations say it should be able to handle around 20k connections however when I get ...
1
vote
2answers
278 views
Apache many httpd process by my own server IP? eating all my Ram
Well i just bought a new dedicated server, I have no Linux experience, but i'm trying to learn.
I have been testing the server for a few days. I improve the httpd.conf my.cnf for better performance, ...
1
vote
2answers
484 views
(node) Hit max file limit. Increase “ulimit -n”
In Ubuntu 9 I am receiving a message on my server that says:
(node) Hit max file limit. Increase "ulimit -n"
However, typing commands in the terminal reveals the following:
$ ulimit
...
0
votes
2answers
310 views
How to speed up a server using netstat & httpd.conf?
I'm using netstat commands to help optimize my httpd.conf correctly.
Here are the results:
netstat -an | grep -c :80
579
netstat -anp |grep 'tcp\|udp' | awk '{print $5}' | cut -d: -f1 | sort | uniq ...
0
votes
1answer
138 views
How to monitor real time sendq and recvq sizes
netstat -an will give the recvq and sendq on a particular connection. When I have an application (in this case a dumb echo server) listening on a port and I put the load on and run netstat in a loop, ...
2
votes
3answers
223 views
netstat issue: cannot pipe output from 'netstat -c' to an nfs mount
Short version:
Netstat works fine except when I redirect output to a file in NFS.
doesn't work: netstat -c > /nfs/mount/file
works: netstat > /nfs/mount/file
works: netstat -c
works: ...
1
vote
0answers
176 views
Netstat Send-Q High
Am using Ubuntu Server 10.10 and when i do netstat -tuna i get the many connections with Send-Q very high, 23K, 50K, 100K. This users report that they have latency problems when connecting to the ...
4
votes
2answers
1k views
How to find other end of unix socket connection?
I have a process (dbus-daemon) which has many open connection over UNIX sockets. One of these connections is fd #36:
=$ ps uw -p 23284
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME ...
0
votes
2answers
174 views
Why can't I access my Linux FTP (vsftpd) server?
I've just installed vsftpd, and started the service. The service is running, and my netstat dump shows it (See below). I've also enabled anonymous access for good measure. However, when I try to ...
0
votes
1answer
403 views
Port 8080 not visible while doing netstat?
While trying to run Tomcat on my Windows 2003 OS, I am noticing that the server is not running but at the same time it is not throwing any exceptions on the console. My first hunch was that the server ...
1
vote
2answers
114 views
Linux: How to display all sockets opened for a particular interface?
How can I display all sockets opened for a particular interface?
0
votes
0answers
70 views
What are the steps to diagnose failed netstat connections on Mac OSX?
On my Mac OSX server, I'm trying to find the source of failed connections reported by netstat:
>netstat -s | grep 'bad connection'
414747 bad connection attempts
What is the best way to go about ...
0
votes
2answers
166 views
Can't connect to local server
I'm migrating a client / server application from Linux to Windows and while the Linux version of the server works fine, the Windows version won't connect via localhost. While the program is trying to ...
1
vote
1answer
701 views
Lots of TIME_WAIT connections in netstat (Windows Server 2008)
I'm having some issues on a Windows 2008 server with some network connections not going through. For instance, in a web application on the server, we need to open a socket connection to another ...
1
vote
1answer
406 views
netstat on fresh install of Solaris 10 update 9
I am attempting to decipher the below output
bash-3.00$ netstat -a
UDP: IPv4
Local Address Remote Address State
-------------------- -------------------- ----------
*.sunrpc ...
0
votes
2answers
340 views
netstat reports PID that doesn't exist - wtf and how do I close it?
I have an app that listens on port 7001, which sometimes crashes but leaves the port open. netstat reports a PID that doesn't exist. How is that possible? How can I force the port to close without ...
0
votes
1answer
536 views
In “The Social Network”, what linux program is Mark using to monitor traffic in near real-time? [closed]
Possible Duplicate:
How to watch logs in real time via Terminal?
The scene where Mark is monitoring TCP/IP connections to his Facemesh website, and comments "look at all this traffic". ...
0
votes
2answers
3k views
How do I make cURL use keepalive from the command line?
I'm trying to verify that HTTP persistent connections are being used during communication with a Tomcat webserver I've got running. Currently, I can retrieve a resource on my server from a browser ...
1
vote
1answer
138 views
Unknown connections to foreign hosts
When I run netstat -a, a lot of connections to foreign hosts show up. It's connected to a whole subnet, ie 123.123.123.x to the port 80. How can I see what is actually going on? My server doesn't look ...
0
votes
1answer
104 views
Netstat - Thunderbird and others work on strange ports
I'm getting this:
$ sudo netstat -alpv
tcp 0 0 comp.local:35409 ey-in-f16.1e100.n:imaps ESTABLISHED 2782/thunderbird-bi
tcp 0 0 comp.local:52950 ...
1
vote
4answers
454 views
Showing date/time in netstat
Is it possible to have netstat show the date/time the connection was established? Is this information even stored anywhere in Linux?
0
votes
2answers
635 views
Windows server 2008 & SQL - many connections in TIME_WAIT
When I run netstat, I get this:
TCP xxxx:65524 65.55.11.162:80 TIME_WAIT 0
There are 13941 of such lines in netstat at this point.
Server is running Windows 2008 & SQL ...
0
votes
1answer
370 views
Port listed as close-combat in netstat
Have just run netstat -A on my SQL Server and seen an established connection from one of our workstations on bmcw000340.domain:close-combat.
My google-fu is failing me and I can't find out what this ...
0
votes
1answer
702 views
TIME_WAIT in netstat of Apache processes
What are the meaning of the TIME_WAIT when using netstat of my web server process? I am sure the web server is not over loaded.
tcp 0 0 0.0.0.0:80 0.0.0.0:* ...
3
votes
3answers
309 views
In the output for netstat what does the [::] mean?
In the results for netstat what does the [::] mean?
example
[::]:ssh [::]:* LISTEN
