When I do netstat -pantu it shows a dash where the pid would be. I have also checked lsof -i and see no pid associated with the port. How do I find what program is keeping the port open?
View 1 RepliesCurrently Im having a syslog server that consolidate firewall logs on port 514 udp. Im also having a IDS device that I wish to push its logs to this particular syslog server so that I can retrieve my IDS logs on this server as well.
Is it possible to do so?Having syslog listening on port 514 for both firewall and IDS logs? If it is possible will the logs be recorded in a single log file?Or will it be recorded in a separate log file ie. firewall.log, IDS.log etc?? I wish to have them in separate individual log files or else there will be hard time segregating the log entries in a single file. Can anyone advice on how to achieve this??
VERY new to linux, erm but I have an issue that needs solving!I recently moved to university, where their network blocks sftp port 22, this means that I cannot connect to my FTP server which is running a version of linux.Now I've got this ftp server connected to a seedbox and it was created using the following walk through..Code:I have written this guide for a friend, but I though it would be useful for others as well.
There are several guides floating around, but I found that most always cock up in some way. This one is tried and tested to work on Debian Etch (on an OVH rps, but should apply to most servers).If there is a new stable release of rtorrent/libtorrent then I will update this guide to show you how to update it (without reinstalling the whole server).
At the bottom there are also instructions to install ftp access & some network monitoring software.Basically, I would really like someone to be able to construct the commands on how to change the listen port for sftp connection on linux or add another port to the list that Linux would use so that I could put in through putty.
I edited "sshd_config" file and changed port 22 to a new port. After I restart ssh, it listens on port 22 and the new port. How can I disable SSH to listen on port 22? I'm using Debian.
View 6 Replies View RelatedI am running Ubuntu 64-bit and I have been trying to set up an ssh connection between the Ubuntu server and a Windows 7 client (using putty) and when I enter the command:
Code:
sudo netstat --inet -lpn | grep sshd
I get the following:
[code]....
I know that ports are, by default, not filtered; they simply don't respond to requests if there are no services listening on the port. Well, running netstat -tulpn gives:
Code:
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN -
[code]....
My Apache is not listening on port 8080. Hence i cant access my server manager [URL]
View 2 Replies View RelatedHow can I find out which process is listening on a port on linux?
View 5 Replies View RelatedIs there a way to determine what program is listening to some port, TCP or UDP, in Linux?
View 4 Replies View Relatedupdate:
Code:
luke@media:~$ sudo service bind9 restart
* Stopping domain name service...
[code]....
I'm using iptables with modules ip_contrack_ftp to be able to use passive ftp. It works well as long as port 21 is being used as listening port. Is there any way to make it work when I configure my ftp server (vsftpd) to listen on an alternative port, lets say 21001 or something? The helper module only seems to be working properly with the standard port, so I was wondering whether there was a way to "tell it" that another port is being used? I mean, of course I make a rule in fw to allow traffic to the alternative port.
But once it's time to start passive connection, then the iptable module cannot handle it properly. I could solve the problem by making a range of passive ports in the ftp-server configuration and allow the incoming traffic to them, but then using helper modules doesn't make any sense. I just want to allow the traffic to the listening port and then want the ip_contrack_ftp module to take care of the rest. This is what I do today - but only port 21 seems to be working. Is there a way to do this with a non-standard ftp port?
i tried my best andwrite all the commands given below. but port 27000 is not in listening state.Note: I spoofed MAC address (change MAC address)on this MAchine.here is my iptables file.
# Firewall configuration written by system-config-securitylevel
# Manual customization of this file is not recommended.
*filter
[code]....
I am learning network prgramming in linux in c,and try to build a server and in this server I want to bind the listening socket to a paricular Ip address and port.Bind function is showing error,I did not want to use wild card. Here is the code.
#include<stdio.h>
#include<sys/socket.h>
#include<strings.h>
#include<netinet/in.h>
#include<arpa/inet.h>
#include<string.h>
[Code]...
is it possible using a perl script to test for a socket listening on a UDP port on a remote host ?I work in an environment where netcat is not allowed and from time to time I need to see if a UDP port is open on a remote host.
View 6 Replies View RelatedWondering if there is a uPNP Port Mapping Utility available for Fedora. Something like this :
[URL]
The program seems to be Mac only tho.
iSCSI Server, can I change the default port 3260 to other port ?
View 1 Replies View RelatedI 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]....
i did a search on this already but i cant find the solution. I start Wammu phone wizzard and i select:guided configuration USB cable Nokia phone Nokia proprietary protocol DKU5 cable (i am noob at this question totaly and am not sure if i choose right one) Here in step six I need to type something like "/dev/ttyS7" or something similar, but I don't know what exactly. I did a search in console writing command "lsusb" and here is what i get:
Bus 002 Device 007: ID 0421:01b2 Nokia Mobile Phones
Bus 002 Device 003: ID 046d:c30e Logitech, Inc. UltraX Keyboard (Y-BL49)
Bus 002 Device 002: ID 046d:c062 Logitech, Inc.
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 0951:1607 Kingston Technology DataTraveler 100
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
I'm using ubuntu 9.04; I have a large project in windows that I want to "port" it in linux.
It uses IPC mechanism "Shared memory" and also "Critical Section" APIs in windows, but unfortunately I have no good reference to change these windows APIs to their equivalent in linux?
Is there a comprehensive documentation or reference for this issues? I mean a table containing the equivalent APIs or systemcalls in windows and linux! For example, what's an alternative for the "InitializeCriticalSection" API in linux? Or an alternative for "CRITICAL_SECTION" structure? Or even an alternative for "RegOpenKeyEx", although we don't have registry in linux!!
A lot of activity is happening on our local server and I want to know which port is getting the most used and which daemon is using the port. I think it will be some modification of netstat command.
View 1 Replies View RelatedWith wich mediaplayer I can listening online radiostations.
View 2 Replies View RelatedSo I want to be able to listen to sound coming in on the line in port. The sound does work as I have tested with Gnome sound recorder. However, I would like to be able to hear it all the time. I don't want to have to record to be able to hear it. Is there a way to mix the line input sound with the normal system sounds? This is so I can run sound from my Xbox 360 into my computer. I currently use a audio splitter but I get problems with volume levels due to voltage changes going to the speakers.
View 3 Replies View RelatedI am trying to get my own email server set up, and so far its been going pretty smooth, The only thing that is not working right now is receiving emails. I can send email just fine, and when they are sent they are even sent from the proper addresses, but when I try to send an email to my domain, it does not go through.
I have the port forwards set up on my router to send all traffic on port 25 over to my mail server, I can telnet to the smtp server from the localhost just fine, but when I try to telnet from another computer on my network it gives me this message
Quote:
So I ran a netstat -an on my mail server to see what ip address smtp is listening on and I get this result
Quote:
Now most guides I find for this problem just say to un comment the line in the master.cf that says "smtp inet n - - - - smtpd", the problem is that line is already uncommented and I am still not able to telnet to port 25 from any machine on my network.
Here is my main.cf, tell me if there is anything that I can do.
Quote:
I just upgraded to Fedora 12 and I am now having some sound issues. On Fedora 11 if I set my volume below about 45% I couldn't hear anything. However 45% gave me a comfortable listening level. Now if I set my volume below about 20% I cannot hear anything, however 20% is very loud. And by loud I mean approximately equivalent to 80% under Fedora 11.
View 9 Replies View RelatedLooking for a test tool where I can fire up any number of ports (TCP and / or UDP) to listen on.
I am currently getting my using nc but its only 1 port at a time (i know I can open up multiple sessions but thats cumbersome), it can't do UDP, and it closes at the end of the session.
A friend has suggested socat but it looks pretty much the same except it can do UDP, but also cumbersome, I have to manually output to a different file per port, etc.
Basically its so I can quickly test firewall and NAT rules.
i am running ncat (netcat's new version from nmap) on centos . I am listening on different ports. My question is , is it possible that when a connection is received on a port say 123, i redirect this connection to a different port and use the 123 port again for listening connections. ncat has an option -k which u can add with -l , it will force fully listen on the port. It can accept multiple connections on a single port but i want that once a client connects on to 123 port, he is forwarded to some other port and no longer on 123.
View 4 Replies View RelatedI installed ZTE MF 626 modem in my F10 with kernel 2.6.27.12-170, i run usb_modeswitch and so far things happened normally. Watching through /var/log/messages it says that F10 detects two port device for this modem: ttyUSB1 and ttyUSB2, and in the sequence it disable port ttyUSB1 BUT Network Manager still set this port.I mean, when i connect via wvdial appointing to ttyUSB2 i get connection, but Network Manager fails to do it appointing to ttyUSB1. How to change device port in Network Manager?
View 1 Replies View RelatedI 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]....
How can I configure ssh to only listen to eth1?
View 4 Replies View RelatedI'm running opensuse 11.2 64 bit, kde desktop. Have performed the one click installation for the restricted codecs from here:
Restricted Formats/11.2 - openSUSE-Community
No matter what I use (amarok, kaffeine, etc) there's heavy skipping / stuttering while playing back mp3 tracks.