Fedora Networking :: F10 Machine Disappears From Network
Jul 8, 2009
The problem in a sentence: a F10 machine seems to disappear from the network after running for a couple of days, however, the network is accessible from the machine itself. My setup: A router with two machines connected via ethernet. Both are essentially desktop computers, one is a standard machine that is booted every day (let's call it Desktop) and the other runs continuously, having only a keyboard attached (let's call it Server).
After running for a few days, Server becomes inaccessible from Desktop. It doesn't respond to ping, ssh fails etc. Even the router shows that Server is disconnected from the network. There is a ping running in Server that pings a machine in the internet with an interval of 60 seconds, the output is directed to a file. The file shows no failed pings, it even succeeds when the router shows that Server is disconnected.
The most peculiar thing: a random keyboard event (e.g. pressing Shift) will make Server reappear. I don't have to do anything else, just press Shift on Server's keyboard and a few moments later everything is back to normal. The router shows that Server is connected and I'm able to do ssh to Server.
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Nov 18, 2009
I am trying to set up bridge, and everything seems to be ok, except 1 thing, it disappears after reboot. So, what I am doing:
Code:
brctl addbr br0
brctl addif br0 eth0
and adding /etc/sysconfig/network-scripts/ifcfg-br0, here it is:
Code:
GATEWAY=192.168.1.1
DEVICE=br0
BOOTPROTO=none
NETMASK=255.255.255.0
DNS1=208.67.222.222
DNS2=208.67.220.220
TYPE=bridge
HWADDR=00:18:f3:75:18:78
IPADDR=192.168.1.3
IPV6INIT=no
ONBOOT=yes
USERCTL=no
and my ifcfg-eth0 is:
Code:
GATEWAY=192.168.1.1
DEVICE=eth0
BOOTPROTO=none
NETMASK=255.255.255.0
DNS1=208.67.222.222
DNS2=208.67.220.220
TYPE=bridge
HWADDR=00:18:f3:75:18:78
IPADDR=192.168.1.3
IPV6INIT=no
ONBOOT=yes
USERCTL=no
How to make it working after reboot?
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Jan 24, 2010
the wireless connection works very well when i start using. but once, after my sister took hold of my computer for a moment. the wireless don't seem to work anymore. i asked her what she did but she says nothing. she may ot may not be lying but that doesn't matters. what matters is i cant reinstall back the wireless network.when i first formatted my notebook to ubuntu 8.0, i followed an online instruction to enable wifi to work. it works perfectly well. so when the problems occured, i tried using the same instruction but it doesn't work anymore.
the wireless network does not appears under connection anymore.
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Jul 8, 2010
I have been out of the linux game for a few years and decided to get back into it, I've been working now for a few days on figuring out why my machine's network card does not seem to want to work on a new FC13 installation.The machine is an older Dell Dimension with an 2.53 Gig Celeron Processor, 512 Megs of RAM (A gig soon) and the ethernet card is an Intel Corporation 82562EZ. Sone generic thing, though FC13 does recognize and appears to have appropriate software.
ifconfig shows no IP address in the x.x.x.x sense, and restarting the network doesn't seem to do anything. The network card is in working order, I tested it in a winxp installation, and the cable is also functioning.
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Jan 28, 2010
On about 90% of bootups I find that network manager has disappeared from the notification area to be replaced by a random duplicate of one of the other icons (at random). If I remove the notification area and add it again all is fine.
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Mar 18, 2010
I have an ubuntu kk laptop connected via wireless to my mixed network (xp, win7, other ubuntu), but i can not ping said machine or connect via ssh. Internet and smb-browsing ON this machine work, as does pinging FROM it. If this was a windows machine, I'd say a firewall is in the way, but since it's a vanilla karmic install, this should not be the case (or should it?).
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Jul 24, 2010
It seems whenever i create a folder it creates the folder as untitled folder, but i can't change the folder name it just says "you don't have permission to rename item" but yet i created the folder and it is there. One thing i have noticed is that once i enter a folder it won't even let me move the folder.
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Dec 3, 2008
I have ubuntu-8.04.1-server installed on virtual machine. It works perfect. Now, I made copy of this virtual machine. I started that copied machine and it works fine, except one thing: network does not work!
I have several others VMs with freeBSD, openBSD or Windows on it, but only ubuntu machine hes network problem after coping. I tried some other VM with ubuntu on it - same problem! I downloaded VM with ubuntu - same problem.I take a look into /etc/network/interfaces file and it looks just as it should (same as before coping) but ifconfig command returns parameters for lo only (before coping there was eth0 and lo).
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Jul 6, 2010
I had run one script in unix machine and want to copy the results to a windows machineBoth the machines are on different networksIn linux machine trying to do the ftp to the windows machine its giving connection refused. How to chech whether ftp is running on that linux machine or not?Also tried scp and ssh , both are failing
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Mar 1, 2011
I've run into a weird problem. Two of my linux machines (A and B, both running CentOS 5.5) are connected to the same wall ethernet socket via a hub. Bothf them are configured for static IPs. The trouble is that when machine B goes offline or hits a kernel panic, machine 1 goes offline too. What I've noticed is that in this condition the "route" output from machine A does not show any entry for the default gateway either The contents of /etc/sysconfig/network-scripts/ifcfg-eth0 for machine A are:
Code:
# Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller
DEVICE=eth0
[code]...
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Sep 10, 2009
I have a problem with samba machine disappearing after I restart smb or the server where samba is running. Lets say I name my samba server ABC and set it up via system-config-samba utils. I follow basic steps and fill out everything according to most guides that are available for fedora. After that everything works great, I can connect to samba server ABC form any machine through smb://ABC (mac) or \ABC (win), however as soon as I restart smb services or my server (subsequently restarting the smb service ...) I no longer can connect to it via samba server name ABC, I can only do smb://SambaServerIP or \SambaServerIP (have to put numerical internal ip to connect)
My smb.conf:
# cat /etc/samba/smb.conf
[global]
[code]....
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Feb 20, 2011
I have an issue with the manner in which Network Manager is configuring the network and short of ditching Network Manager I can see no solution.The issue : Getting a machine to update its machine name in the DNS serverSounds simple doesn't it I operate a FreeBSD based firewall / DHCP / DNS server, using a default Network Manager DHCP configuration the Fedora clients do not register their names with the DNS server when they obtain an address.
I have traced the communications with Wireshark and the Fedora clients are NOT supplying the PC's hostname as part of the exchange so this is NOT a DNS server configuration issue. If I uncheck the option 'Automatically obtain DNS information from provider' under the DHCP settings the Fedora clients DO register the hostname that is put into the Hostname (optional) databox. They do NOT however store the DNS server IP address or any other records defined by the DNS server.
Is there some hidden settings or is this a bug because it isn't acceptable 'DHCP' behaviour if it isn't possible to automatically set DNS server IP addresses and at the same time register the hostname during the DHCP negotiation. Before it is said I know I can use a fixed DNS IP address but am not prepared to long term, I am also not prepared to define the Fedora clients with a 'static' IP. I am similarly not interested in playing around with scripts or any other such 'frigs' to achieve what should be a standard activity - registering a host with DNS during the DHCP negotiation.
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Aug 11, 2010
I have a centos test machine in my office and its MAC Address has been bind in DHCP server so its pointing to IP 3.209.XX.XX and now i have installed xen machine on it. my Xen machine is pointing to IP 192.168.XX.XX from DHCP while it did not bind in DHCP server. I am able to run "yum update" on my host machine. but i am unable to run "yum update" on my Xen machine.
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Feb 1, 2010
I'm running Ubuntu 9.10. I am hooked into my home network with several windows machines attached. On a daily basis I browse the network and use network shares. Today, I can't. Today I can't see any other machines from ubuntu. I haven't changed any settings in Ubuntu, and nothing has been changed on the network, but yesterday it worked fine and today it doesn't.
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Apr 19, 2011
I'm running Red Hat as a virtual machine on VMWare and the network configuration on VMWare is a bridge and i have had this problem, some times does not get network o others do, i have verified code...
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Feb 21, 2010
I installed a minimal ubuntu (minimal.iso) on a virtual machine (vmware) on my windows pc using following packages:
Code:
sudo apt-get install install gnome-core gdm network-manager-gnome human-theme x11-xserver-utils tangerine-icon-theme gnome-themes-ubuntu ubuntu-artwork jockey-gtk gnome-utils firefox
I'm using the Ubuntu VM as my local http server. It is reachable via ip - so http://IP-ADDRESS works. I also use samba for shared folders... but ubuntu is not listed in my network. What means that i cannot access files from outside the vm. Do I have to install further packages, because "normal" ubuntu distributions are listed in my network connections. Samba packages are correctly installed.
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May 13, 2010
I have a Windows 7 Ultimate x64 machine networked with my Lucid machine. When I reboot my Windows machine, the only way I can access the shared drives is to also reboot the Lucid machine. Can anyone tell me why this is, and, more importantly, how to make it stop that?
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Aug 23, 2010
`I'm on 10.04 trying to access shares on a windows machine. The machine does not appear at all in windows network/workgroup. I can see these shares when I'm on my windows partition so I know the problem isn't with the network.
Code:
sudo aptitude install apache2.2-bin apache2.2-common libapache2-mod-dnssd
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Sep 27, 2010
i have installed linux debian in my computer but i have aproblem , i have a ping only on my computer itself , not to gateway or other computers on my network .
Ip : 10.0.88.9
Gateway : 10.0.88.1
dns :10.0.88.7
note:when i have installed system i have no internet connection so it is not installed updates
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Dec 18, 2010
i want to know mac address of a particular ip but the problem is that i am unable to ping that ip but that ip is being used by someone in my local network that i know from my proxy logs. i want to know the mac address of that ip,
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Apr 11, 2010
I have two Linux machines both running Debian (I do not want Windows to be involved at all). One is a desktop and one is a laptop. I desire to connect a not-yet-purchased printer/scanner combination machine only to the internal LAN via my router (Linksys WRT54G) via Ethernet cable, or via wireless if the printer/scanner has that capability. I want to be able to print to that printer (and scan from its scanner) by only having to turn on the printer/scanner and only one of the other computers, and not have to have both Linux machines turned on in order to print and/or scan.
So my questions are:
When I look at specific models of printers, what should I be looking for in their specifications that indicates that this configuration is possible (i.e., should I be looking exclusively for printers that say they are "wireless printers" or "network printers")?The reason I ask this question: In my online searching, I thought "networked printer" or "stand-alone network printer" meant just that, but what I found instead are pages and pages of instructions on how to connect the printer locally to a Linux machine, with the associated setup to allow that Linux machine to serve print requests coming from other machines on the LAN. And that approach is not what I want to do (with the notable exception of temporary setup to validate that the printer is responding to requests for printing and scanning from Linux).
Are there particular brands, makes, or models that I would have better luck in getting to work in this manner (i.e., "better stick with HP or Xerox")? Am I kidding myself that a combination printer/scanner would work in the same fashion and still be relatively easy to set up on both Linux machines without resorting to some Windows-centric approach? Result of my searching so far (I have not worked my way through all of these in detail, but plan to): References to local printer connection which is not what I want:
Setting_Up_a_Network_Printer_using_CUPS
Set up a network printer using cups
Set up a printer
The post inside Setting_Up_a_Network_Printer_using_CUPS that starts with "running an HP Photosmart 8450 as a stand-alone networked printer" (where is the permalink?) is as close as I could get, but I am concerned that the instructions given are specific to the HP Photosmart 8450, or specific to the HP vendor, versus for all printers that can be connected to an Ethernet network (not that being locked into HP is going to be a problem necessarily, but I would like to know why if that is the case). Linux compatible printers says "Have a look at LinuxPrinting for known working drivers for printers data base. Also buy from a linux friendly company, ie HP, Brother, Epsom." Later in that thread, someone said Definitely don't buy canon.
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Jan 14, 2010
The Short VersionTwo Vista machines connected to a 2Wire wireless router (AT&T UVerse) via DHCP.One (headless) Ubuntu 9.10 Server machine connected (tried both wireless and wired at different times) to the same 2Wire router via a static IP.Samba is installed on the Ubuntu Server.Vista computers connect perfectly to Ubuntu Server.Various file transfers/communications ensue.Ubuntu Server 'disappears' from network.Sometimes after a couple of minutes.Sometimes longer.Cannot ping server.Cannot SSH into server.It's just 'gone'. Reboot server. Everything's fine (can ping, find, connect, etc.) until (some minutes later) server 'disappears' again.
The Long Version
Network Configuration
Code:
|---------------------|
| Vista Machine #1 |
| 192.168.1.70 (DHCP) |
|---------------------|[code].....
The Question: Why won't my damned Ubuntu server just stay connected to the network?
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Jan 29, 2010
My Ubuntu 9.10 (64 bit regular old desktop version) machine has two NICs, eth0 and eth1. eth0 does not connect to my router (and thus the Internet) automatically. I have to manually click on it in the NetworkManager applet after every reboot.
Internet connection sharing has also been impossible. I gave up trying to do that after about 2 weeks. I was simply trying to share my Internet connection with a Windows XP machine over eth1, but it never worked. I could ping one machine from the other, but couldn't get to the Internet from the Win XP machine.
Removing NetworkManager may be the ticket. Most of the tutorials for Internet connection sharing tell you to enter commands in the console. Maybe one of them will work once I remove the NetworkManager applet.
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Jan 14, 2011
I'm running xubuntu 10.04 LTS (upgraded from 8.04 LTS) on an old low power sempron machine as an always on 'internet machine' i.e. it does all my downloading email etc. and up until yesterday it has always performed flawlessly. Yesterday wasn't its fault, it was a BTI network problem that took out my internet service but while talking to tech support I realized that this machine has lost all ways to control the network cards. Network-manager and network-manager-gnome are installed according to synaptic but they have no menu or notification appearance. I've tried reinstalling them to no avail.
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Jul 9, 2011
I am trying to ping my Windows machine connected to an open network (I'm at a internet caf) from my linux VM (also connected to the same network with a usb adapter), but I'm obtaining this output:
# ping 10.23.47.12
PING 10.23.47.12 (10.23.47.12) 56(84) bytes of data.
From 10.128.128.1 icmp_seq=1 Packet filtered
From 10.128.128.1 icmp_seq=2 Packet filtered
With high probability host 10.128.128.1 is a firewall or some router with packet filtering mechanism; but I don't understand how it can be possible to implement this kind of solution, with what kind of software or hardware? I also tried a nmap scan to my Windows machine but it returns me scan results from another host(the firewall or the router I suppose):
nmap -sS -O -P0 10.23.47.12
Starting Nmap 5.51 ( http://nmap.org ) at 2011-07-09 15:46 CDT
Nmap scan report for 10.23.47.12
Host is up (0.097s latency).
All 1000 scanned ports on 10.23.47.12 are filtered
[Code]...
So my questions is, how is technically possible to implement this kind of restriction within hosts connected on the same network? It's the first time I see this kind of configuration.
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Aug 5, 2011
I am on Ubuntu 10.04. I had a network printer added, but suddenly now the printer seems to have disappeared. What's more, System->Administration->Printing doesn't allow me to add a new printer.The System->Admin.->Printing troubleshoot said the following:
"The CUPS print spooler does not appear to be running. To correct this, choose System->Administration->Services from the main menu and look for 'cups'". System->Admin.->Services does not exist. Searching on the net led me to believe that /etc/init.d/cups start would start cups for me, but that does not seem to be happening.
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Jun 4, 2010
I have two machines, a laptop and a desktop, both running Lucid. each works fine, but... I can't seem to mount the external drives attached to either machine over the network. I can share folders from the internal drives fine but when I try to access an external drive from either machine I get "unable to Mount volume". Is it possible to mount the external drives across the network? If so, How?
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Dec 13, 2008
I know this has been covered in many threads before, but I'm stuck not finding my exact situation or an answer. I'm a newbie using a Debian Linux machine as the client and Windows XP machine as the server. I have successfully mounted the XP Network drive on the Linux machine using commands from the root terminal:
mount -t smbfs -o username="Windows Username",password=windowspassword //XPcomputername/folder /mountpoint/
However when I put the command in the ect/fstab file as suggested in several posts, I don't get any result on boot up. I.e. I can't get the network drive to mount on start up, I always have to manually mount it from the root terminal.
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Nov 15, 2010
I've been having issues with my ubuntu server (10.04 LTS) lately. Every once in a while, anywhere from 3 days to a month or more, the server will just disappear from the network. All manner of trying to reach it from the outside fails, even from the LAN. Since it's headless, this is kind of problematic. After a hard power down or reboot, the server will always come back online, but this is very annoying for a remotely administered server.
What should I look for when trying to determine why the server keeps going offline? I can't tell if there are any other issues like a hard lockup or anything, just that it is not on the network anymore when this happens.
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Jan 5, 2010
I'm having issues with my GigE Marvell NIC. The problems have started recently. Anytime I push network bandwidth over ~9MB/s, I loose all network connectivity. Stopping the network, rmmod'ing and modprobe'ing the sky2 module and then starting the network again does not resolve the issue (even though eth0 dissapears and then comes back). The only non-standard configuration (as far as desktops go) in my network is that I use a bridge so a KVM virtual machine can be exposed directly to the network. I'm currently testing the problem to see if it exists outside of the bridge.
[Code]...
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