Networking :: Identify All PIDs Sharing A TCP/IP Stack?

Jul 26, 2011

Is there a linux command (or command combination or utility) that can identify all processes (PIDs) that are sharing a TCP/IP stack ?

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Ubuntu Networking :: Can Client PC Sharing Key With Access Files / If Not File Sharing?

Jul 7, 2011

Im using WPA with a TKIP pre-shared key...Can a client pc im sharing my key with access my files if im not file sharing? Router config?

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Networking :: Odd Network Stack Glitch Seen?

Dec 21, 2010

I just encountered an odd network stack glitch and wondered if anyone has seen this before, or knows what could cause it. When I connect to services on localhost ( if there is a process listening, it works OK as expected. there is no process listening, I should get a NAK and see a connection refused message.With this glitch, that was not happening. And this was with to Nothing was listening, but the SYN attempts were all that were happening. If there was something listening that worked OK. Connections to other hosts worked as expected.

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Fedora Networking :: Setting Up A Bridge With No IP Stack?

Aug 3, 2009

I'm trying to set up a Linux box with three ethernet interfaces as a bridge where I can do some packet filtering. I don't want this box to have any IP stack, packets that are allowed through the filter should be forwarded without changes just the way a switch would do it. I have build a kernel with ethernet support but no IP stack. It detects my interfaces, and I can bring them up with the ifconfig or ip commands. But when I try to start a bridge with brctl I get this error message:

can't setup bridge control: Address family not supported by protocol

A google search for that error message gave me no results at all. The command I used was "brctl addbr br", which does work on a full installation. Does brctl require IP support in the kernel? That would be a bit odd I think, since brctl doesn't do anything IP related, everything it does is at lower layers?

Does anybody know what the above message means, and what I might have been doing wrong?

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Networking :: Running Iptables Break The TCP/IP Stack?

Feb 14, 2011

I mistakenly ran 'iptables restart' on a server that was not set to run iptables. Immediately, the server quit making outgoing connections on port 80. It has problems completing a traceroute when another machine on the same VM Host can do everything just fine. One of our best networking technicians diagnosed it as issues with the TCP/IP stack on the OS.

I know that iptables is off, allowing all trafffic incoming/outgoing.

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Networking :: Ipv6 Stack Not Enabled On Centos 5.6

Jul 25, 2011

I've got a little server setup on my local network and I'm trying to configure it to use miredo. I've got my laptop successfully using it, but for some reason miredo gives this error when I try to start it:

Error: IPv6 stack not available.

also running "lsmod | grep ipv6" gives these results

ipv6 270049 1 cnic
xfrm_nalgo 13381 1 ipv6

I get the impression that ipv6 is not enabled on my server, but I'm not sure how I enable it short of doing a reinstall.

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Ubuntu Networking :: Disable RSIM In Bluetooth Stack?

Apr 4, 2011

how to disable rSIM in the current bluetooth stack?Starting about a week ago, whenever my phone (Android Captivate) pairs with my ubuntu workstation the rSIM profile is enabled which effectively turns off my cell service since my Ubuntu machine does not have a GSM/3G radio built in.I'd like to disable rSIM altogether so that I can again re-pair my phone to my Linux system. All my searching turn up results for people trying FIX this service...

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Networking :: Enable Duel Ipv4 / Ipv6 Stack On System?

Mar 12, 2010

How do you I use duel stack i.e How do I use ipv6 packet inside ipv4 packet using fedora kernel 12 ?

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Ubuntu Networking :: Ndisgtk Blocks Network Manager For 120 Seconds And Causes Stack Trace

Jun 19, 2010

I've troubles getting my new Sweex wireless 300N USB adapter to work. Tried searching in several directions (see closed thread). Further investigations shows however it is caused by the NDISGTK wrapper for Windows drivers. Can anyone tell me whether Sweex is shipping a faulty driver (it is the latest available) or it is a fault in ndisgtk? Or maybe I'm doing something stupid myself, which I do not find completely imagenary below some more detailed information on my findings: Started with network off and examined the networkstatus


tpeelen@CC-desktop:~$ sudo lshw -C network
*-network DISABLED
description: Ethernet interface
product: RTL8111/8168B PCI Express Gigabit Ethernet controller


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Ubuntu Networking :: Identify CAT 5 And CAT 6 Cables ?

Jun 14, 2010

The way to identify CAT 5 and CAT 6 cable?What are the differences between these two cables..?

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Networking :: Identify The Icmp Packet?

Dec 1, 2010

how to identify the icmp packets & marking. this below icmp packets marking is not working.

iptables -t mangle -A PREROUTING -p icmp -j MARK --set-mark 0x5
iptables -t mangle -A PREROUTING -p icmp -j RETURN

with the help of port no or any other how can i identify the icmp packet ?... This below two is working fine

iptables -t mangle -A PREROUTING -p tcp -j MARK --set-mark 0x2
iptables -t mangle -A PREROUTING -p tcp -j RETURN

iptables -t mangle -A PREROUTING -p udp -j MARK --set-mark 0x3
iptables -t mangle -A PREROUTING -p udp -j RETURN

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Fedora Networking :: Bluetooth Stack Creates Rfcomm0 But Is Not Applying The Correct Context Label To It?

Sep 9, 2010

if an admin decides this is security feel free to move, at the moment I can't decide where so posted here...On my laptop (msi-u100) my bluetooth stack creates rfcomm0 but is not applying the correct context label to it so selinux is bitching.

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Ubuntu Networking :: Identify The Status Of The Ethernet Interafces?

Apr 13, 2011

How to identify the status of the ethernet interafces? on my machine, every interface shows "UP" nn matter the interface is connected or not:


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Networking :: Network Security - How To Identify Programs And Processes

Sep 2, 2010

I was wondering if anyone might know of good reference material, books websites etc., that discuss network security issues in layman terms. I would like to set up a dedicated Linux box as a firewall and would like to have a deeper understanding of the different types of configurations that are possible. I run a dual boot system and most of the firewalls I have used on the Windows side are very confusing to me. A lot of the time they give you a pop up that informs you that some cryptically named program is trying to access the network or the internet and wants to know if I want it to or not, 99% of the time I have not idea if it is a legitimate program or not. I realize that this is probably a separate issue (knowing how to identify programs and processes that should have access from those that should not) from setting up a firewall and basic network security but I know that they are related.

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Networking :: Identify Route For Some Network Clients Without Netmask?

Jun 10, 2009

have two internet lines from two isp every one pluged to interface eth0 and eth1 and i have eth2 interface to internel network clients now i need to make some clients to use line 1 and other use line 2 i want make this without use netmask , just for selected IP.

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Programming :: Find The Active TCP Connections And PIDs Corresponding To Them?

Oct 19, 2010

I am programming on Linux middleware so I need to get a list of all active TCP connections. Is there any API to get such information? I know I can find the connections in /proc/net/tcp, but how to find the PIDs? Apparently ps or netstat command is not an option since it is a middleware.

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General :: Top - Order Pids By Memory Instead Of CPU Usage

Jan 14, 2009

Command top displays the pids (tasks) by order of CPU usage. Could I make it order them by memory usage?

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Networking :: Identify Which Infected Desktop Is Copying Files To NFS Share?

May 18, 2011

I have iomega appliance, which is based on Debian distribution. There is an NFS share that I have created which is without password.Since it is without password, there are some viruses copied. I want to find out which IP address is the source of these files. In other words, I want to know which PC is copying these infected files on the NFS share.

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General :: List All Jobs And Their Pids From A Certain Time Frame?

May 10, 2011

Is it possible to list all jobs and their pids from a certain time frame? For instance if I needed to see all completed jobs from yesterday how would I do this? I've tried jobs -n but that was messed up because I had typed jobs right before that.

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Programming :: Getting A Short Shell Script Related To PIDs?

Nov 21, 2010

how can I store the output of (ty to colucix for this line)


xprop -id $(xprop -root | awk '/_NET_ACTIVE_WINDOW(WINDOW)/{print $NF}') | awk '/_NET_WM_PID(CARDINAL)/{print $NF}'

in a variable and then pass the value of that variable to the kill command as the PID to kill?

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Programming :: Get Child Pids From Parent Pid In Kernel Mode?

Jun 28, 2010

i need C code to get child pids from its parent pid in linux and in kernel mode, is there anything like getpid() or getppid() which works in kernel mode?

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Ubuntu Networking :: Can't Identify Process/Unbind Socket Blocking MongoDB

Mar 27, 2011

I'm running Ubuntu 10.10 64bit, and I'm a newbie when it comes to networking.

My issue is that there seems to be a socket bound to a port blocking MongoDB from accessing it's usual port 27017. The strange thing that it was working just fine until recently and I can't figure out what I did to screw things up... I can make it use a different port but the reason why it can't bind to the default port and why I can't fix it is really bothering me. I've tried rebooting the machine even with nothing else running when I try to run Mongo is still blocked giving the following message:

ropes@ropes:~/mongodb-linux-x86_64-1.8.0/bin$ ./mongod
./mongod --help for help and startup options
Sun Mar 27 14:08:14 [initandlisten] MongoDB starting : pid=2718 port=27017 dbpath=/data/db/ 64-bit


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Programming :: Kill Pids For All Sessions For A Specific User Except Their Current One?

Oct 20, 2010

I have several users on handhelds and they like to let their sessions time out. Their zombie processes then cause record locks.I've come up with calls for killing the pids for any prior sessions started by a given user. This procedure would be executed in the .bash_profile.

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Fedora Networking :: Wired Networking Not Connecting In 12 With Windows Internet Connection Sharing?

Jan 16, 2011

I just want to use Internet Connection Sharing (ICS) to connect to the internet. I have done a massive amount of troubleshooting, but some of it seems to contradict itself, and the only two things that I know for sure are that it used to work, and that my Ethernet cable is not the problem. When I use Terminal utilities like ifup and dhclient it seems that it can not determine IP information, but when I try to put it in manually, the "Apply" button grays out right after I finish typing it in. When I try to connect normally, in KDE or GNOME, the icon acts like it's connecting, then instead of having the connected icon, I receive a notification that "the network has been disconnected", and it goes back to the disconnected icon.

Oh, and by the way, I know that I could probably find a workaround, but I have limited resources, and this used to work. The Linux is a Dell desktop with Fedora 12 and the Windows is a Windows 7 HP laptop.EDIT: I hope that I didn't mess something up, but I accidentally used system-network-config to try putting in the IP address there, and ended up changing it back to the original settings, but the computer is now calling it Auto Ethernet in the taskbar icon, although sudo iwconfig in the terminal still calls it eth0.

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General :: Process Shows Multiple Process Ids(pids)?

Nov 9, 2010

I have a process running on Linux.When i do ps -eaf | grep <myProcess>, it show muliple entries for <myProcess> with different pids for each entry.Kindly tell me what could be the reason for a process having multiple pids?

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Ubuntu Networking :: Lucid And XP Networking - How To - Sharing

May 16, 2010

I've been looking around for something that can help me share files with my notebook with lucid and my desktop with windows xp...i could only find help in setting up ubuntu... i dont know how to connect to XP, setup xp for file sharing with ubuntu and share my files.

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Networking :: Sharing WEP Key Across All Users

Dec 23, 2008

I'm on the road with a laptop and my wife. I can get into various networks (like my father in law's) but just to make life nicer, I'd /like/ to only have to enter the wep key once ... in my profile. For instance: I get on the network under my profile. I then log off, and my wife logs on. She has to enter the wep key in her profile. She logs off and a cousin logs on (on our anonymous account that has limited privileges) and they also need to enter the wep key. Any way to share the wep key across all accounts? I'm using network manager in ubuntu hardy.

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Fedora Networking :: Sharing Internet Between Xp And It

May 21, 2009

for the last one week i'm facing problem in sharing internet between xp and fedora. I'm connected to internet through wireless adapter in xp and wants to share internet through crossover cable between xp and fedora. I did the following steps.

1: start a network setup wizard in xp.
2: change the smb.conf file in fedora and change the workgroup name to same as in xp.
3:in Xp the ethernet adapter has address
4: when i connect the crossover cable and start fedora. it couldn't get the ip address through dhcp.
5: when i tried giving the ip address manually " with gateway"and save the subnet mask is replaced by don't know why it not saved.

i tried changing new ethernet card but not worked. some time avc denials message "SELinux is preventing consoletype (consoletype_t) "read" to /var/lib/dhclient/dhclient-eth0.leases (dhcpc_state_t)." comes. can any one tell me how to enable or make a network in fedora . i 'm very new in linux and couldn't able to share network .

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Ubuntu Networking :: 10.04 - Ics - Sharing With Xbox 360 ?

May 18, 2010

Ive got my laptop hindered up to my xbox 360 it has windows 7 and Ubuntu 10.04. i realy want to get rid of windows and the only reason i keep it around is because ics sharing works realy well for connecting to xbox live.

I recently discovered that you can (ics) with ubuntu which is awesome only problem is
i cant figure out how to set it up to stop it having moderate NAT so i can play games that require an open NAT. its probably due to the ports not being fowarded properly or somthing and/or the face that my xbox needs a static ip placed out side the routers firewall on the DMZ setting .

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Ubuntu Networking :: Sharing Change Between 9.10 And 10.04

May 20, 2010

I have a MediaGate MG35 which allows me to play movies and things via my network from my computer. This worked fine with Vista, but when I upgraded to Windows 7 the samba sharing changed and my MediaGate was no longer able to gain access to my shares on 7. My solution was using VirtualBox with Ubuntu. This worked fine on 9.10. I did this by creating a folder in my /media folder called windows-share, giving it a share called movies with Guest access. and then adding the following line in the rc.local file to mount the windows share though VirtualBox:

mount -t vboxsf movies /media/windows-share/

(movies being the name I gave the shared folder in VirtualBox) So I had to do was start the VirtualBox and everything was setup without me having to do anything. This then allowed me to get to my movies saved in windows with my MediaGate. This worked great. I've now got Ubuntu 10.04 on a new VirtualBox. I've set up everything the same, but when I try to access the shared folder, it doesn't work. If I try to access it with windows, it says that the share is not accessible or I don't have access. This ONLY happens to the folder that has been mounted to, any other folder I share works fine.

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