Ubuntu Networking :: Eth0 Isn't Connecting To Router?

Jul 18, 2010

I downloaded wubi, installed ubuntu, and booted it up. Everything went smooth, it finished installing with no problems. It restarts again and I login. Firefox opens.....server not found.

That brings you to where I am now. It says that eth0 is connect. I manually changed the ip address, the netmask and gateway. Still I have no luck.

route reads as follows:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.1 * 255.255.255.255

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Ubuntu Networking :: Auto Eth0 Not Connecting 10.04?

May 2, 2011

I can't figure out why my ethernet isn't recognizing its connection. ifconfig returns the hardware address, route -n returns an empty table

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Ubuntu Networking :: Why Does OS List The Router As Eth0

Jun 17, 2011

i recently switched over from windows xp and instead of listing my 2wire router it just says eth0 now

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Ubuntu Networking :: Lost Eth0 On Wire To Router?

Apr 22, 2010

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

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Ubuntu Networking :: Lan Setup - Connecting To Eth0 Then Network Disconnected

Dec 22, 2010

i have limited experience with Ubuntu and Linux for that matter. i know my way around for the most part but i come from windows. anyway. i have 6 dell gx260 computers. i also have a netgear 8 port Ethernet switch. now im just trying to get the computers to see each other. simple for me in windows. but i have no idea where to start here. it just says connecting to eth0 then network disconnected. and thats it. for now im just working with 2 of the computers. the others are not set up yet. i have been googling for 3 days and got nothing that helps. (my goal after they see each other is to share files back and forth. and also to have one of them control the others with some type of remote desktop. but thats for another day.)

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Networking :: No IPv4 On Eth0 - No Connect To Router

Apr 20, 2010

I have tried clean installs of Knoppix v0.6, Xandros 2.0, and Ubuntu 7.1... same issue with all. I cannot seem to get eth0 (via chip on mobo) to get/have/use IPv4. ifconfig shows only IPv6. (I cannot paste any info because linux desktop is on different box.)

End result is that I cannot get the linux desktop to connect to my lan, either with dhcp or with static ip.

I have a belkin router configured as my gateway 192.168.3.1 and nothing fancy with the setup. I have dhcp open for 192.168.3.245 thru ...254 and at most there are only 4 systems in home connecting with dhcp at any time. all other systems have static addresses.

I have two decades of desktop and lan support under my belt, but relatively small amount of command line experience and almost no history with linux (unless you count a dozen unsuccessful attempts to burn linux distro install discs on this Vista desktop).

Therein lies the start of my prob. I need to build and manage a fileserver for my home, but cannot seem to get a working installer cd or dvd to burn from anything I download.

So I said to myself, "Self," I said, "you're a tech. Build a workstaion, use the DVD that came with your Linux Bible (2008 Ed.) to install one of the linux distros on it, then download a recent, stable server distro and burn it using the linux workstation."

Unfortunately, if I cant get an ipv4 connection to my home network, I cant get out to the Internet to download any newer ISO files.

So what am I missing or doing wrong? How do I tell linux to stop trying to use IPv6 and let me use IPv4?

BTW, eth0 works just fine if I install Windows on that PC, so I know its not bad HW. Could it be a driver issue? Or do I need to use some Terminal command to turn off IPv6 and reconfigure eth0 for IPv4?

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Ubuntu Networking :: Connecting To ISP Directly Rather Than Through Router

Mar 11, 2010

I've had my PC connected to my router since I installed Ubuntu. My router has the address and name password for my ISP. I'd like to plug my PC directly into my ISP line, but the network manager won't find the connection, and I don't know how to tell my PC my ISP's address and the name and password to logon with. I set up my router, and I know how to make the connection in XP, but I don't know how to in Linux. I have very limited Terminal experience.

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Ubuntu Networking :: Wireless Router Connecting ?

Jun 21, 2010

I have a computer running Ubuntu, and a MacBook Pro. I need to buy a decently cheap wireless router that I can hook up to my Ubuntu so that it will send wifi signals and I can use the wifi to go online with my MacBook Pro. I was about to get one today, but remembered how Ubuntu is picky about working with things like that. I'm only going to be using it to get signals around the house which isn't that big at all.

So what would be the cheapest and decently efficient wireless routers that I can use which Ubuntu will cooperate with?

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Ubuntu Networking :: No Longer Connecting To Router?

Oct 27, 2010

When I start Ubuntu at work it automatically connects to the router every time. At home the router signal is quite weak but manually connecting via NetworkManager Applet 0.8 was successful for a week or so. In the past week, however, although the router appears in the list in Network Manager, it has stopped working and is unable to connect. Nothing has changed with the router or hardware in that time.

This is a new laptop which had Windows 7 pre-installed. Windows 7 connects to the home router successfully every time. I really don't want to use Windows 7 but until I can get this fixed I have no choice.

I don't know if it's relevant, but once I tried deleting the AUTO Home connection from Network Manager and was then able to connect on the next attempt, but this has not worked since.

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Ubuntu Networking :: Can't Connect After Connecting To A Wireless Router

Oct 30, 2010

Ubuntu 10.10 connects to a DSL modem without any problems - I mean I just plugged it in and it worked - GREAT I bought a wireless router so I could connect my netbook and now my Ubuntu machine which is simply using a cable from the wireless router now DOES NOT connect. I tried a windows machine on the wired connection from the wireless router and it connects without a problem. OF course if I remove the wireless router from the chain, i.e. simply connect directly to the modem it works straight away.

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Ubuntu Networking :: 11.04 Not Connecting Wirelessly To Wpa Psk Aes Enabled Router?

May 3, 2011

I am using an HP dm3 1030us laptop. The wireless adapter is and Atheros 5009. I have a fresh and clean install of Ubuntu Natty in it. I am trying to connect to a Linksys WRT54G2 that is in G mode using WPA2 Personal with AES. Router info:

Router Information
Firmware Version: 1.0.01 build 003, Mar. 26, 2008
Current Time: Mon, May 02 2011 20:34:37
MAC Address: 00:22:6B:4A:44:DF
Router Name: WRT54G2
Host Name:

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Fedora Networking :: Connecting To Wireless Router ?

May 5, 2010

When fedora initially starts up, the network manager shows all the available wireless connections available to me. However, when I select my wireless connection, it will go through the loading process where it shows the two green dots and the circular moving blue streak, then it prompts me to put in the wpa password.

This is where the trouble starts...when i input my wpa password, it will proceed to attempt to connect to my network but it never succeeds in doing so--it will keep on asking me to input my wpa password. when i finally get sick of doing it over and over again, i just hit cancel instead of retrying to connect.

After i stop trying to connect, the network manager no longer shows all the available wireless networks--the list is completely empty, and i can find no way to get the list to show up again, with the exception of restarting my computer.

I am able to connect to the internet with a wired ethernet, but id like my wireless to work.

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Networking :: Connecting To Router Via Phone Cord?

Jun 29, 2011

Is it possible to connect to a router via a standard phone cord?

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CentOS 5 Networking :: Connecting Server 5.3 To DSL Router?

Sep 3, 2009

I want to use centos as a developer server on my desktop before deploying my stuff to the internet.

I have a netgear DG834G router. It's IP address on my local network is 192.168.0.1 and connected to the adsl line. The router is set up to act as an dhcp server too. On the router I have reserved ip address for the nics per their mac addresses.

My server is on a dual boot desktop. The other boot is XP and works fine, picks up dhcp.

I don't know how to connect Centos to the router.

I have tried to play with the network manager but to no avail.

I can ping localhost, interface eth0 is there, but i can't ping to the router.

I have set the manager system/administration/network to get dhcp automatically.

I can't activate the eth0 although the hardware device says it is OK.

I've looked at firewall and iptalbes.

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Ubuntu Networking :: EDUP Wireless Adapter Not Connecting To Router?

Jan 3, 2010

For several months I was using EDUP adapter with both my laptop that operated on Ubuntu 9.04 exclusively and a desktop that could also boot with XP. Soon after 9.10 was released I updated my laptop and was able to use the adapter to connect to the Net.Recently, I also updated the desktop but also made it exclusively a Linux machine. Unfortunately, I have been unable to get the wireless adapter to work again on the desktop.The OS recognizes the device as wlan0, and lsusb shows:Bus 003 Device 005: 0cde:0008 Z-Com Sitecom Wireless Network Adapter 100G+ WL -125The network manager recognises the availability of the wireless network and attempts to connect. After trying for a while it comes up with a dialog box "Wireless Network Authentication Required" and in response I enter the WPA password but with no success.The behaviour would indicate that I am entering the wrong password but I am not.I have checked it several times and compared with the password that works with the laptop.

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Networking :: Ubuntu Keeps Connecting And Disconnecting From Wireless Router / Stop It?

Aug 13, 2010

Need help, ubuntu keeps connecting and disconnecting to my wireless router. whenever i am able to get it to connect for a significant amount of time, i still have no access to the internet.

using ubuntu 10.04

using Linksys router, not sure what model but can find out.

using toshiba satellite laptop

I am able to access my router and internet in Windows without any problem

dont have anything of importance on ubuntu install, so i could reinstall but would rather not so that i could fix this problem in the future.

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Ubuntu Networking :: Connecting To Router After Reinstall That Weren't Present Before

Dec 8, 2010

I am having some bizarre problems with a 10.10 install which I am hoping someone here can give me a little input on. Some background info: I have a laptop which I had originally put 10.10 on about 4 weeks ago. I was using the Network Manager applet to change the MAC address by entering a valid MAC in the "Cloned MAC Address" field, and then connecting to a network. This suited me fantastically as the applet applies the MAC to any interface that connects - ie. the internal Intel card or the more often used external USB RTL8187L. For reasons which would take a lot of explaining (and now kicking ones self in the head) I had to install Windoze on the machine for a week to get some specific stuff done - but have now come back to 10.10.

The problem: So just as before, I installed 10.10, connected to my router (without changing MAC) installed system updates and other packages such as Macchanger etc and got the system working and customised how I like it. Problem is, now when I enter an address in the Cloned MAC address field and attempt to connect, the applet just sits there with the pulsing waves likes it's trying to connect but it cannot. Whilst this is happening, ifconfig -a shows that the MAC has indeed been changed. Until I remove the Cloned MAC address entry, I cannot hop on my router - or any other for that matter. Before, these steps were enough to ensure correct and functional cloning.

Things to know: This happens whether I am logged in as me or root. There is no MAC address filtering on 3 routers I have tested on (different brands). There is only MAC filtering on a 4th, and in that case, the cloned MAC is in the routers whitelist. This happens whether I specify IP details and if DHCP is used. All 3 routers without MAC control have been reset. All settings to do with wlan0/wlan1 in the network applet have been removed and re-entered. It happens on 2 different wifi cards (Intel and RTL8187L) but they worked before re-installation. I have also tried the usual commands in the terminal such as:

su
ifconfig wlan0 down
macchanger --mac (mac here) wlan0
ifconfig wlan0 up

also tried hwaddress ether 12:34:56:78:90:00 etc - The problem doesn't seem to be in changing the MAC, more the functionality of wlan0/wlan1 afterwards. I have also tried (although, it worked fine without this before) adding lines to /etc/rc.local and /etc/network/interfaces. It would be worth noting that either networking was restarted or the machine was rebooted after each alteration. No avail.

I can't think of anything significantly different that I have done to this re-installation compared to the first time, so I am not sure if perhaps in the time that it took me to reinstall 10.10, a package update has come out which has altered something and it's chucking a spanner in the works. Having said that, I even reinstalled AGAIN without applying any updates and same result. I would consider myself moderately experienced with Linux - so I am pretty sure that I am not making a complete n00b mistake... this situation is just so puzzling. I have been googling for quite some time and can find others with similar problems, but no actual solution.

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Ubuntu Networking :: Connecting Intel PROSet Wireless To WEP Router?

Dec 15, 2010

I have installed Ubuntu x86 10.04 LTS onto an old Dell machine which is connected to my broadband modem and Netgear Wireless Router (WGR614 v6). The router is encrypted with 64-bit WEP and allows my System76 Pangolin Performance laptop to connect flawlessly out of the box. However, my sister runs Windows XP Professional 32-Bit on a Dell Latitude D830. This machine's wi-fi card is an Intel PROSet Wireless which recognizes the router but can't access it.

What should I do on her laptop in order for her to access the wi-fi router?

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Ubuntu Networking :: Not Connecting To Wireless Router Comtrend CT-536T?

Jan 29, 2011

router comtrend CT-536T but now my laptop lenovo r61i is not able to connect to it. like it has a issue with wap/wap1. Is their a possibility to get it to connect. the other router maxG (US robotics) is wep/hex based. any suggestions ? It only made a connection the first time and after the signal wasn't even noticeable .

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Fedora Networking :: Router Disconnects On Connecting 14 Machine?

Jan 5, 2011

I recently installed Fedora 14 on my machine. Ever since I cannot connect to the Internet at home.henever I plugin in the ethernet cable the ADSL router disconnects and all machines connected to the router lose connection to the Internet.

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Ubuntu Networking :: Connecting To Router - Netgear DG834 - Connection Often Being Dropped

Jul 12, 2010

I have a Netgear DG834 ADSL router (v3) which I have used for a couple of years. Prior to that I had a v2 of the same router, but upgraded for the one that supports ADSL 2+ (here in the UK).

Recently I have been having problems with the connection often being dropped, and when I access 192.168.0.1 for the router admin page, when it is not working I get no IP address listed for that of the ISP's server, and sometimes as well the upstream and downstream speeds are listed as 0 kbps.

Usually this was resolved by rebooting the router.

However, for the last couple of days, when using Ubuntu 9.04, the page of the router at 192.168.0.1 will not load. I have tried numerous different browsers, and none of them will give the router admin page.

When I tried booting from a live CD of Fedora 13, the router admin page came up just fine, no problems (although still not getting a proper connection to the Internet).

I was going to try to use the older router I had, but so far, as I cannot access the router admin page in Ubuntu, I have not done so (not had the time, and now I am at work posting this).

So there must be a problem in Ubuntu that is preventing it showing the router's admin page. The Network connection details show that the router has given the PC an IP address of 192.168.0.6 and the DNS servers are listed, so I know that Ubuntu is talking to the router, but it is not allowing me to access its settings in any way.

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Ubuntu Networking :: Connecting To The Internet Through A Lynksys Wireless G Router And A Cable Modem?

Aug 6, 2010

i'm having problems connecting to the internet unless i manually enter the IP info.

automatic DHCP does not work. I'm on a dual boot machine vista/ubuntu 10.04 LTS connecting to the internet through a lynksys wireless g router and a cable modem.

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Ubuntu Networking :: Connecting A Modem Router With A Mobile Broad Band Umts Connection?

Feb 17, 2011

sometimes our ADSL connection gives up and we are left without internet connection for days until the problem gets fixed. I mean by this problem along the phone line. It affects all machines that connect to the internet through a Netgear WIFI Modem Router. I recently tried an alternative when this happens is to use a USB Huawei Mobile Broadband UMTS connection which works when you insert it in 1 laptop. Is there a way i could get the Netgear WIFI modem router to connect on that usb stick or PC that is online on that usb stick and give access to other machines that will want to connect to the web ?

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Fedora Networking :: Fedora Locks Up Connecting By Wireless To OpenWRT Router

Nov 16, 2009

I dual boot Windows/Fedora 11 on my Dell Latitude D830 laptop, which has an Intel PRO/Wireless 3945ABG card and I have just bought a Linksys WRT160NL wireless router. I am currently trying to set up OpenWRT linux on the router. Because of the nature of my problem I have also posted this on their forum.I am having trouble connecting to my OpenWRT install via Fedora. Things seem okay in Windows, but when I try to connect from linux my laptop locks up completely and I have to hard reboot. I previously have never had any trouble connecting to any other router with this install of Fedora.

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Fedora :: Unable Get Wireless Working After Connecting To Eth0?

Aug 12, 2010

I installed F13 on an Acer laptop for a friend who is just beginning with Linux. This laptop has the dreaded Broadcom chipset and is using the b43 driver. When it was first installed, wireless was automatically detected and worked fine. However, as usual, there was about 200MB of updates after the install, and the wireless was downloading extremely slowly, so I connected eth0 just to complete the updates. Ever since, the wireless will not work. When the machine is booted, wireless is shown as disabled in Network Manager. I remembered that there was a wireless switch on the front of the laptop and switching it on allows me to check the enable wireless box, but wireless says device not ready.

ifconfig wlan0 up returns:

Code:

SIOCSFFLAGS: Operation not possible due to RF-kill

I assumed this meant that the switch was in OFF position, but it is not. iwconfig shows the wireless is detected. It appears that there is a script for rf_kill somewhere in the filesystem that is keeping this from working.

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General :: Missing Eth0 Ethernet Interface In Ubuntu — Can't Connect To Router

Aug 27, 2011

I'm having trouble getting my Ubuntu 10.04 machine (Sony Vaio VGN-SR490) to connect to the Internet by way of an Ethernet cable connected directly to my router.

I'm able to connect to the Internet using this same cable using a Windows machine, so there's something wrong with the way Linux is configured.

How do I got about figuring out what the problem is and solving it?

Here are my network settings on Linux:

$ ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host

[Code].....

It looks like the network adapters list is empty. I will now install both Windows XP and Ubuntu Linux dual-boot. I'm still not able to access the internet, even through Windows. I'm wonder if this could be a hardware problem with the computer or a problem with the router itself. Other computers can connect to this same router, and work fine. (That's how I'm posting this after all!)

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Networking :: Eth0 Fixed IP - Eth1 DHCP Gateway - Access To Eth0?

Aug 19, 2009

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?

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Networking :: Production Server With Static IPs On Eth0 And Eth0:1 - Getting Private LAN On Eth1?

Jul 1, 2010

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).

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Debian Configuration :: Using WiFi Router On Eth1 Bridged To Eth0

Dec 13, 2015

I am running : Linux ics385 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u6 (2015-11-09) x86_64 GNU/Linux

Here's the situation

1. I'm trying to configure a WLAN using a D-Link DLR655 wifi router that is connected to eth1.

2. eth0 is connected to the ISP's DHCP router and has the IP 192.168.0.24

3. I've bridged eth0 to eth1 such that eth1 has the static IP 192.168.8.1

4. I've manually configured the router and it uses the 192.168.8.1 as the WAN address with its subnet on the 192.168.10.* address space.

5. I can connect a laptop to the D-Link using wifi and ping 192.168.8.1 but I can't ssh to it or to anything beyond it from the laptop.

6. If I'm on the server (192.168.0.24) I can ssh into either 192.168.0.24 or 192.168.8.1 but not if I'm on the laptop. I conclude from this that ssh is not the problem but the laptop says ssh: connect to 192.168.8.1 port 22: connection refused.

So, am I conceptually confused or is it that I have to open ssh up to the other sub-net address spaces or something like that?

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Networking :: Ignoring The Unknown Interface Eth0=eth0?

Dec 18, 2010

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

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