Ubuntu Networking :: Lost Eth0 After Installing VPN
Jun 15, 2011
I wanted to try to install one of those public VPN services in order to try a software program. I setup a VPN for a service that is located in the UK. I successfully installed the VPN that just required me to use their gateway address and they also supplied the username/password. All I did was edit the connections from the Ubuntu Network Manager to add the VPN. After rebooting I no longer have my wired "eth0" connection listed and the Network Manager shows a red X.
I use a DSL service and my computer is directly connected to the router. I am using Ubuntu Natty 11.04. I read where you may have to edit the /etc/udev/rules.d/70-persistent-net.rules because it may cause an entry of eth1 instead of eth0. My file still shows eth0. I have also deleted the contents of that file and rebooted, as suggested in other posts, and eth0 is in the file, but still does not show in my Network Manager.
If I type in terminal: sudo ifconfig | grep eth, I get an output of:
eth0 Link encap:Ethernet HWaddr [my mac address]
Going to Whois shows my IP address as that from my local ISP. Clicking on Network Manager > Connection Information, I receive a window that states : "No valid active connections found". Obviously, I am connected to the Internet. Is there a way to restore my eth0 connection?
I have a dell mp1210 xps laptop. I just recently installed installed Ubuntu 9.10 and am very green. With difficulty I managed to install the drivers for the wireless card and now have wireless on the laptop. In order to get the wireless working I had to restart my computer, and once it booted up again the wireless works, but there is no trace of eth0-my wired network device (Broadcom BCM4401-B0) which was working fine before I got the wireless adapter working. Lspci still shows the device as it did when it was functioning, but ifconfig only shows my local loopback and wlan0 (my wireless device). I am not sure how eth0 got deleted, I am wondering if maybe I have to set up some sort of switching between the wired and wireless adapters so they are not both active at the same time. Any suggestions would be really nice, I have been digging through the forums, but I am unsure of what went wrong or what to do about it.
My 9.10 has lost it connection to my router.Lucid finds it ok as Auto ethO , XP gets on the net ok as wellHow do I fix Karmic ? I click on network, it is greyed out but still lets me edit connections and add wired as auto etho but still no connection.Not sure what else to do ?ifconfig -a shows -
Code: ifconfig -a eth0 Link encap:Ethernet HWaddr 00:22:15:20:1b:3f
I had some problems installing 10.04, which I'm not going into here unless I have to, but it appears to be up and running now except my PC can't access the network, even though it's wired. This is the first time I've tried putting on a new build by myself as my son always used to do it (my PC used to belong to him many years ago, and is old, like me.)
On one of my F10 boxes yesterday, I installed several NM packages with yum update after being advised of their availability. Today, (the first reboot since installation) I no longer have network access on that box.
I thought to uninstall Gnome Network manager since it was always asking for to connect with wireless internet but it was working fine with wired internet.I uninstalled it and installed wicd. and then for some unknown reasons the internet disappeared.Kindly let me know How can i get back network manager without having internet and make internet work on my computer.I did searched a lot on Ubuntu forums using somone's else computer but no success.So if you let me know how to approach the problem in right manner it shal be great .
5.10 Breezy configured as machine controller. Works great eth0 is a fixed IP to communicate with controller comms board. Not easy at all to alter - the comms board is hard coded to listen on eth0 for commands.
I can use eth1 as the default gateway and ping google.com, etc. But when I now attempt to communicate with the controller with netcat, e.g.
Code: echo !HH | nc 192.168.1.6 80
I obviously never get an answer since the request is passed via eth1. Using the -g option with netcat doesn't work either. I had a look at iptables but it doesn't seem to be able to do what I want. How I can still use eth0 as my communication port to the controller whilst eth1 is the default gateway?
I have two servers on a vlan at my datacentre/colocation and previously both servers had public IPs on their eth0 interfaces. The servers are HP ProLiant DL360s - one is a G4 and one is a G5 The newer G5 is now the LAMP server and the G4 has been retired and I want to repurpose it as an iSCSI target using openfiler freenas or similar.
My G5 has public/static IPs lashed to the eth0 physical interface and the eth1 is not configured to do anything yet. The G4 will have both interfaces available - perhaps one for ssh access from one of my static public IPs and the other to be a private IP on the local vlan. Here is what I am trying to get my head around...
The G5 eth0 - Public IP - full LAMP services on two or three virtual interfaces eth1 - Private IP 192.168.0.1 The G4 eth0 - Public IP for ssh eth1 - Private IP 192.168.0.2
Because my traffic between eth1 on these boxes is via private IPs on the local private vlan it doesn't add to my quota for bandwidth. How do I go about configuring the routing and gateways and other aspects of this so that I can run a private IP space network between the eth1s and still serve the outside world from the eth0s...
I am afraid that if I assign the private IPs to the eth1 interfaces the routing may either not work or interfere with the access to the production internet facing interfaces (eth0s).
I am running fedora vm under XP host and using NAT connection to the Internet. It usually works fine, but some time the connection is just lost. I went menu System->Admin->Network and see the interface eth0, but I cannot activate or deactivate. The status is inactive. (when the connect works, the status is active). so I try "ifdown eth0" and "ifup eth0" command, and got
"Error: Connection activation failed: Device not managed by NetowrkManger
The menu System->Admin->Network device control show no interface.
I'm running a dual boot Ubuntu 10.04/Backtrack 4 (Ubuntu 8.10) system. I can get internet in the BT4 side but not in the Lucid side. In Lucid I can ping my router, and the network manager says I'm good to go, but I can't get to any web sites. It all started when I tried to put my laptop on another network by mimicking the settings of a computer I had just unplugged from the network. MAC address and all.
ifconfig eth0:
Code:
eth0 Link encap:Ethernet HWaddr 00:1f:16:ba:4c:8c inet addr:10.136.9.147 Bcast:10.136.9.159 Mask:255.255.255.240 inet6 addr: fe80::21f:16ff:feba:4c8c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
i install kernel rpm after i boot that kernel network not working kernel name : kernel-rt-trace-2.6.24.7-132.el5.centos.i686 [URL] error "Bringing up interface eth0: Device eth0 has different MAC address than expected, ignoring."
I try to generate a server client code. What i try to do is sending video streams from eth0 and eth1 to the other server programs' eth0 and eth1. In order to do that, i decided to use SO_BINDTODEVICE. But the code is not working. Am i misunderstood the usage of SO_BINDTODEVICE.
1-Defining two ports 2-Defining two sockets 3-Assigning host ips on them
Last night while setting up wired & wireless connection in openSuse 11.2 Gnome version via YAST's ifup, I got wireless but lost wired connection (interface eth0). Dmesg shows that eth0 became eth1. I cannot get eth0 back. Is there any way to remedy this situation, eg. get info from the Ubuntu partition in my triple-boot laptop, without having to re-install openSUSE?
I have a hardware device with two ethernet ports, eth0 and eth1 running Centos 5. Basically my goal is to forward packets from eth0->eth1 and eth1->eth0 as well as get a copy of these packets for analysis. If I set IP routing to do the forwarding then I won't get a copy of the packets for analysis.
i installed win XP month ago, after that i have installed ubuntu 8.04. i didn't choose manual configuration while selecting partitions. NOW all the data LOST!!
and after typing sudo fdisk -lu
the result is as following
Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders, total 312581808 sectors Units = sectors of 1 * 512 = 512 bytes
I recently thought it would be a good idea to install ubuntu on my home computer thats running XP home edition. Initially When running the live CD it asked me what partition I wanted it to go on. So I chose to share the one with windows on it assuming it would create a dual boot automatically. After Install of Ubuntu I restarted and It booted straight into ubuntu without the option of XP. After looking around on Ubuntu for some signs of Windows files I panicked and decided to put the XP disc in to see if I could fix the boot for windows. Big mistake! After some research on some forums to appeared to suggest running fixboot and fixmbr so I did with no joy.
After this nothing worked and when I put the live CD in again It just went into the virtual environment. So then I was left with no OS at all it seems. Panicking even more I tried to repair the original XP install but windows couldn't see the partition which seemed strange since the repair console finds the windows install.The windows install is on the C drive which is a partition on a single no raid SATA drive. (Hope that makes sense).After scratching my head and googling like crazy I found a few tutorials on Grub that suggested that you could insert the root of the XP install and it would boot fine. As I am not familiar with Ubuntu this went a bit over my head. At this point I thought I didn't have much to lose and Installed Ubuntu again on a new partition on another drive to have a go but I couldn't find where to find the root and even if I could I would know where to put it.When I went into disc into disk utility it didn't even show the SATA volume anyway. It shows the adapter but no volume Im so confused and I feel like Im fumbling in the dark hoping to bump into the answer.
I have a harddisk which is partiotioned in C & D. I've installed WIN XP on C and WIN 7 on D. Then I installed Ubuntu 10.04 on D beside WIN 7. Now I can't access to WIN 7 and also to drive D in XIN XP and in Ubuntu. What can I do to get back WIN 7 and drive D ?
under gnome (OS: ubuntu lucid 10.04) i installed KGet and it was working fine with no problems or ( extra PKGs installation ) ... then i wanted to try KDE desktop so i installed kubuntu-desktop , after that gnome windows and message alerts have been transformed to KDE form even if i was logged with gnome ...
I uninstalled kubuntu-desktop using instructions provided here : [url] but then i lost kget .... now when i try to install it again , synaptic iforms me that i have to install a lot of extra packages as well .. what is the shortest way to install and run KDE program on my gnome desktop properly .. ?
If I uncheck and recheck "Enable Networking" in the Network Manager Applet 0.7.996 I would expect the wired network to disconnect (which it does) and reconnect (which it does NOT). So I tried sudo ifdown eth0 and got
Quote:
Ignoring unknown interface eth0=eth0.
ifconfig tells me
Quote:
eth0 Link encap:Ethernet HWaddr 00:25:64:e8:18:2c inet addr:192.168.0.112 Bcast:192.168.0.255 Mask:255.255.255.0 inet6 addr: fe80::225:64ff:fee8:182c/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[code]....
so I am at a loss. How do I stop and restart the network interface short of rebooting the machine?
My network name is eth2 it was changed by some reason and now i got these errors... i installed, reinstalled, re re installed, tried to run the asistant but no luck :/
Code:
* Stopping the Firestarter firewall... eth0: error fetching interface information: Device not found eth0: error fetching interface information: Device not found eth0: error fetching interface information: Device not found
I wan trying to install Debain on a 4GB USB drive while running the setting something happened with my pc and i had to restart it.I try to boot from the USB drive it worked but was giving a empty cursor. the installation did not continue.i open the USB drive in my pc now but it shows just 300 MB space and lost the 3.7 GB space.I think space of USB drive with that partition, can i recover my USB drive lost partition space ?
I have installed SUSE 11.3 and I am using KDE4. I also installed the font "misc-console".
After installing the NVIDIA driver 256.53 the font misc-console becomes useless because it is displayed so much slanted that it is imposible to read. However, if I disable the NVIDIA driver (by replacing "nvidia" with "nv" in xorg.conf), then it works fine. It also works fine in KDE3 and the NVIDIA driver. So, it seems to be a combination between NVIDIA and KDE4. A lot other fonts are also overly slanted and unreadable (like "Sony fixed", "misc fixed", etc.).
If I launch konsole from a terminal, I receive the following warning:
konsole(6928) Konsole::TerminalDisplay::setVTFont: Using an unsupported variable-width font in the terminal. This may produce display errors.
Is there a way that I can use "misc-console" without having to uninstall the NVIDIA driver? I'm just used to this font for my terminal.
The same happens whether I install the driver manually or through YAST, 32 or 64 bit. The video card is NVIDIA 8400GS, the system Athlon 64 4400+
I recently installed KDE (I was using GNOME). After that, I found for gnome applications, KDE font settings is applied even when I log in using GNOME. Whatever I do in appearance-fonts, all gnome applications follow the settings from KDE Personal Settings. (Application Appearance -> Fonts)
I lost all the subpixel hinting, and I finally just found out that if I set it in KDE Personal Settings it actually affects gnome applications. (I'm in GNOME now)
I lost grub on installing window7 , used caf,s way Re-Install Grub Quickly with Parted Magic - openSUSE Forums to install but on typing find /boot/grub/menu.lst it does on find menu.lst however i could see the file by mounting the right drive. I dont want to fresh install suse to get grub
I got two IP's in my dedicated server. Both are external IP's. I would like to make connections using 2nd IP address under eth0:0 interface. For example: when using "lynx whatismyip.com" should display my 2nd IP. How to do this using iptables ?
i know exactly what i need to do, im just not familiar enough with command line to do it properly.i have 7 computers.the first 4 are connected to a router via wireless at one end of the house. of the last 3 only 1 will be able to access the router via wireless, so it needs to share it's one wireless connection via ethernet. this computer i'm going to call 'server'server will have two IP'swlan0 192.168.1.6 this connects to the router that has internet access.eth0 i intend to have the following settingsip:192.168.0.1sub: 255.255.0eth0 will connect to a second router, where the cat5 cable goes from the server, into the internet port of the router where i will define the router's static IP:IP: 192.168.0.100sub: 255.255.255.0gateway 192.168.0.1i have then set the router IP for LAN handling as 192.168.27.1 and all ethernet connections will have a 192.168.27.x IP.
so i need to know how to, without a gui application, use the terminal to assign server eth0 a proper IP address, and tell the server to take the connection it has and share it through eth0 to supply internet for the last 2 computers via ethernet.i had it set up in this way with a windows machine being the one that had the wifi access, but i'd rather have it setup for the ubuntu server to do this task. security is imperative for these 3 remaining machines, so just getting 2 more wifi adapters for a connection to the initial router isn't an option.the 2 that connect to server do so through SSH and though server IS connected via wireless it only makes outward connections through
