Ubuntu :: Netstat Shows No Proper IP (0.0.0.0) For Port 22?
Mar 29, 2010
had some problems with setting up Linux on my virtual machine as I cannot connect with putty (connection gets refused) to it but now I guess I figured my problem out, just not the way how to solve it .If I do netstat -nap | grep :22 I get the following output:[[ see attachment ]]
Shouldn`t there be some kind of LAN IP instead of 0.0.0.0?Does anyone have a possible solution for that? Checked iptables and such, they are not causing it.
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Jul 14, 2011
I've been experiencing some home web-server slowdown issues lately, and I wanted to see if it's a problem with the server itself. I'm not sure if this might be the problem, but upon checking netstat -tn, I see over 15 instances of the following:
[Code]...
where 192.168.2.9 is the server's local address, the local address port varies, and the foreign address is the server's web address. If anyone knows what might be causing this and/or how to fix i
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Jan 4, 2010
We are running a combination of Apache-2 with mod_jk connecting to tomcat workers running on separate hardware.Strange: "netstat -tn" on the Apache server outputs identical combinations of source address, source port, destination address and destination port.
Has anybody else experienced this phenomenon? (I googled and searched LQ but couldn't find anybody else reporting this)Is netstat broken, or is there another explanation?
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Aug 1, 2011
I have an application that uses port 8080 all the time. One time, for some reason, it was taken by I didn't know what.
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May 16, 2011
I need the port 27015 to be open. I've opened it in iptables :
Quote:
iptables -A INPUT -p tcp -i eth0 --dport 27015 -j
But when i try :
Quote:
netstat -nan
The port 27015 do not appear as "LISTEN".
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Jun 8, 2011
with netstat i found a port with idle state, i google the meaning of IDLE:Idle, opened but not bound.What do you mean by bound?
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May 12, 2010
Netstat has always confused me. I ype netstat -pl and get this:
Code:
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 localhost:ipp *:* LISTEN 1476/cupsd
tcp 0 0 localhost:postgresql *:* LISTEN 13816/postgres
tcp 0 0 *:44223 *:* LISTEN 1288/sshd
tcp6 0 0 localhost:ipp [::]:* LISTEN 1476/cupsd
tcp6 0 0 localhost:postgresql [::]:* LISTEN 13816/postgres
tcp6 0 0 [::]:44223 [::]:* LISTEN 1288/sshd
udp 0 0 *:bootpc *:* 1267/dhclient
I assume that *:* means that any foreign host can connect from any port, but then what does [::]:* mean? and localhost:ipp... what port is ipp? Shouldn't ports be numeric?
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Jun 6, 2011
I'm trying to open port 8080 on my application server. I've included it in my iptables; however I still cannot access through ssh nor putty and it doesn't show up when I netstat either.Here is my iptables-config:
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -i eth0 -s xxx.xx.x.0/24 -j ACCEPT
[code].....
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Nov 15, 2009
My computer is DMZ'ed ports forwarded and stuff, and still this port shows as closed on nmap.
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Feb 18, 2010
nmap is showing a port as closed. I have the firewall stopped on both hosts.It shows as closed on localhost as well.The process that's listening to that port is not started from xinetd so i doubt hosts.allow/deny is the issue.I can't help but feel that I'm forgetting some other access control mechanism.Both hosts are RHEl5.4
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Sep 2, 2010
I just noticed after installing a new server with samba that a portscan will show the samba used ports. This server has two interfaces, a world address eth0 and an intranet eth1. The samba ports show in scanning either interface, even after I changed samba to listen only to the intranet (192.168.x) address.
I am concerned especially about the 139 and 445 ports, which could attract a lot of garbage traffic.This is Debian 5.05 default samba installation.Otherwise similarly installed Ubuntu box with two interfaces does not show samba at all, even though smbd is running and working just fine.
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Jul 9, 2011
I like the easy readability of fwlogwatch (as compared to the Log File Viewer). But fwlogwatch doesn't display port number or date when I run it in terminal.
Is there a log viewer that displays clean like fwlogwatch but displays all the information that Log File Viewer does?
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Apr 7, 2010
I need to know what this means and what to do to fix this. code...
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Feb 18, 2010
I want to do a simple port redirect, i.e. whatever comes trough whatever interface on port AAAA will get redirected to port BBBBI thought that iptables -t nat -I PREROUTING --source 0/0 --destination 0/0 -p tcp --dport AAAA -j REDIRECT --to-ports BBBBhowever it doesn't work, e.g. nc -v -w2 -z localhost AAAA gives:
nc: connect to localhost port AAAA (tcp) failed: Connection refused
while
nc -v -w2 -z localhost BBBB
[code]....
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May 2, 2010
My connection manager shows wired connections and shows wireless as being disabled. here is some terminal info getting wireless going?
Here is a bunch of things I have tried and the results.
nixon@nixon-desktop:~$ sudo ifup wlan0
Ignoring unknown interface wlan0=wlan0.
nixon@nixon-desktop:~$ sudo ifdown wlan0
ifdown: interface wlan0 not configured
[Code].....
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Jan 8, 2010
I'm encountering a strange problem. I need to open and forward all UDP and TCP ports related to VoIPtelephony (5000:32000) in the Suse 11.1 server that's acting as router/firewall in our setup. The ports must redirect to a Asterisk server in the local network. (This server has the IP adress 192.168.0.3)I've opened ports in Yast (Firewall>Ports>Advanced) and putted in some masquerading rulesirewall>Masquerading):0/0,192.168.0.3,tcp,5000:31000,5000:310000/0,192.168.0.3,udp,5000:31000,5000:31000when I do a nmap localhost I get:Starting Nmap 4.75 at 2010-01-08 16:52 CETInteresting ports on localhost (127.0.0.1):
Not shown: 991 closed ports
PORT STATE SERVICE
21/tcp open ftp
[code]....
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Jun 25, 2011
I am developing a node application and there is an option to set the process title (process name). This only sets it in some tools (like ps and top), but not in htop or netstat.
I found this article that explained how most applications do it, but it doesn't change in netstat.
That lead me to wonder where those programs are getting the process name. Would they be getting it from /proc/##/cmdline? (## being the PID of the process)
I figure messing with things in /proc is a bad idea (and probably not possible), so if this is where those programs are getting it, is there a way to change it?
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May 2, 2010
I have a mail server i need it to send message via port 587 not port 25, i make some changes to my postfix server which i use and it is already successed making a telnet to 587 port like it :
[Code]....
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Feb 13, 2009
I have question regarding netstat? When performing a "netstat -s" I receive the following information regarding dropped packets under IP:
IP:
93978695 total packets received
0 forwarded
0 incoming packets discarded
79472157 incoming packets delivered
65235033 requests sent out
29527 outgoing packets dropped
However if I run a "netstat -i" I have no dropped packets whatsoever: (apologies for the table format):
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
bond0 1500 0 34326528 0 0 0 72755307 0 0 0 BMmRU
bond0:1 1500 0 - no statistics available - BMmRU
bond1 1500 0 28605491 0 0 0 20948952 0 0 0 BMmRU
eth0 1500 0 34199550 0 0 0 72755278 0 0 0 BMsRU
eth1 1500 0 126978 0 0 0 29 0 0 0 BMsRU
eth2 1500 0 97911 0 0 0 1 0 0 0 BMsRU
eth3 1500 0 28507580 0 0 0 20948951 0 0 0 BMsRU
lo 16436 0 34094225 0 0 0 34094225 0 0 0 LRU
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Apr 19, 2011
I've never seen the type of output from netstat and don't have a clue what it means.Quote:
tcp 0 0 :::8009 :::* LISTEN 31673/java
tcp 0 0 :::22 :::* LISTEN
[code]...
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Jan 29, 2016
I have just installed a new clean version of debian. an hour later I have used the netstat to check connections and I see this :
The (italic) is me, but the first IP with 104.155. I have searched it on google and it says Google INC. Why is deb connected to it ?
somehost@delldebc2:~$ netstat -actun
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:43182 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
[Code] .....
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May 19, 2010
Is that rather strange or am I missing something. Firefox is obviously open and connected.
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Aug 24, 2010
how I cat to filter out information about Unix Domain Sockets from netstat output without grep? Is there some option for command (I not found it in man of netstat).
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Feb 9, 2010
While running some live tests last week I saw an odd situation where netstat appeared to be displaying the wrong PID and process name for TCP connections. I'm trying to figure out if this is just a strange netstat bug or if it could indicate something odd is happening with our software.
We have a main program which establishes a number of connections, including connecting to a JMS server and listening/accepting a TCP connection. The main program also creates a child process which it uses to communicate with another server. On at least three occasions we saw a situation we saw netstat reporting all the expected TCP connections (correct ip/port for both source and destination), however the child process, instead of the main, was listed for the PID. The main process was still running but netstat no longer reported any TCP connections established by the main program. The main program continued to function correctly, the JMS communication continued to work and we believe the other TCP connection was functioning correctly despite the program supposedly not having any TCP connections.
I'm wondering if this could simply be a bug and/or obscure functionality of netstat that I don't understand which would cause netstat to report the child process as 'owning' the parents TCP connections. I don't know how this would happen or why the parent would continue functioning despite the problem otherwise.
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Jan 26, 2011
I had a dream least night in which I was on my computer and I was typing the command Netstat -a in command prompt in Ms-Dos. And I was wondering why it looks so much like a Linux terminal command? This question persisted in my mind after I woke up. So what is the story about it?
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Nov 23, 2009
While issuing the command netstat -M it shows netstat: no support for `ip_masquerade' on this system. But this system is used as a gateway and iptable rules are set for ip forwarding. Also internet is getting another machine through this machine. What about the message?
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Jan 8, 2010
When the centos is running a vpn server, there 's a client connecting. The connection can't be seen by netstat -tunp
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Dec 1, 2010
I just found something "strange" by using netstat
tcp 0 0 myhost.deprecated:53719 amaretti.chimfar.:54406 ESTABLISHED
How can I check what is the program that is responsible for this line?
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Oct 15, 2010
When I run "netstat -a" commnand, it display:
Active UNIX domain sockets (servers and established)
Proto RefCnt Flags Type State I-Node Path
unix 2 [ ACC ] STREAM LISTENING 20269 /tmp/.gdm_socket
...
unix 2 [ ] DGRAM 997161
unix 3 [ ] STREAM CONNECTED 942628 /tmp/.X11-unix/X0
unix 3 [ ] STREAM CONNECTED 942627
unix 3 [ ] STREAM CONNECTED 942626 /tmp/.X11-unix/X0 ....
Why some socket don't have Path name? And what mean's RefCnt = 2?
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Apr 15, 2010
My new box has gotten laggy as all get out.I did a netstat just for the heck of it and:
Code:
0 0 localhost.localdoma:ipp localhost.localdo:47567 TIME_WAIT -
tcp 0 0 localhost.localdoma:ipp localhost.localdo:47557 TIME_WAIT
[code]...
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