Ubuntu Networking :: Updates Lead To Failure In Establishing A Wired Connection

May 21, 2010

One of the (many many) problems that I had with Ubuntu 10.4 was that I wasn't able to connect using a wired. It really came to me as a huge surprise, because that's a problem that I have never encountered. I had dealings with wireless-issues in the past. But never a wired connection failed. The thing is that we (in the dormitory where I live) had a network problem recently. A hardware piece got fried and we weren't able to replace it for about 3 weeks (go figure :X ). But in the past 3 days or so we're back online. The thing is - none of my neighbours (all of them are using Windows) has network issues now. Usually it was on the contrary - I was the one who had beautiful connection while they had to deal with a load of d@ng. That said - I made a fresh install of Ubuntu 9.10. The problem got resolved and I was as happy as a chick during her first wedding night with Don Goivanni in her bed. BUT after I updated (note - update and NOT upgrade) my system, I was suddenly unable to use the wired connection. The strange thing is that the NM says that I am connected AND I even get some short bursts of network traffic (last for 2-3 seconds) but usually not enough to load even a simple web page. Ping always returns 100% loss no matter how long the package burst lasts. I have slept this night for about 3 hours looking for a solution. None has been found so far. I don't have WAPs at home so wired connection is the only way for me to use this modern thing called internet.

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Ubuntu Networking :: Establishing A VPN Connection - Kubuntu 10.10 - 64 Bit

Apr 15, 2011

I have a problem with establishing a VPN connection, it's driving me nuts already. No matter what I try, which packages I (re)install, or how many configuration settings i change.. the result is always the same (see syslog at the end of this post). On the same machine, but on a different harddrive, I have installed Windows 7. The VPN connection works without any problems on this system.

I played already with KNetworkManager, NetworkManagerm, KVpn and so on. Further I re-installed each VPN- and network packages multiple times (eg KNetworkManager, NetworkManager, network-manager-pptp, pptp-linux). Further I tested almost every possible VPN configuration (PAP,CHAP,MSCHAP(v2),EAP,MPPE, stateful encryption, no password, BSD compression)... My syslog is as follow:

Code:
Apr 13 18:15:02 defcon-inc pppd[3721]: LCP: timeout sending Config-Requests
Apr 13 18:15:02 defcon-inc pppd[3721]: Connection terminated.
Apr 13 18:15:02 defcon-inc pptp[3731]: anon log[callmgr_main:pptp_callmgr.c:258]: Closing connection (shutdown)
Apr 13 18:15:02 defcon-inc pptp[3731]: anon log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Apr 13 18:15:02 defcon-inc pptp[3731]: anon log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)
[Code].....

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Fedora Networking :: Establishing A Vpn Connection Using Vpnc / Error Failed To Bind To 0.0.0.0:500: Address Already In Use?

Nov 24, 2010

I am having difficulties in establishing a vpn connection using vpnc (or NetworkManaager-vpnc).

As long as the openswan IPsec daemon is running, vpnc-helper quits with the error message

Quote:

Failed to bind to 0.0.0.0:500: Address already in use
[user@computer ...]# vpnc-helper --local--port 0

If I use NetworkManager-vpnc, then establishing the connection simply fails.
Using the --local-port 0 option does not change anything.

If I stop the ipsec service (service ipsec stop) then establishing the connectiong works, both with NetworkManager-vpnc and the console tool, but apparently the network traffic is not routed via the VPN - in my case this means that I cannot access hosts within the vpn and stuff.

Funny thing is - on my notebook from where I connect via WLAN, everything works fine. With Fedora 13 everything works fine, too.

Does anybody have an idea how to enforce that the vpn connection is actually used?

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Ubuntu Networking :: "Connection Not Establishing" In Wireless?

Feb 15, 2011

My Acer Aspire One D260 netbook is not establishing the wireless network where I am using ubuntu netbook edition 10.10

how to solve the problem because it is working when I am using the net by connecting through the LAN wire.

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Ubuntu Networking :: Wired Internet Out After Updates Downloaded

Jul 3, 2010

Hardware: 5 year old Compaq laptop: Presario V4000. - Intel Celeron M Processor 1.3 GHz System: Ubuntu release 10.04 lucid - Kernel Linux 2.6.32-23 - generic - GNOME 2.30.0 Uses a wired connection through a router SEQUENCE OF EVENTS Friday evening - June 2, 2010 Sytem was working OK. Downloaded Ubuntu updates. Put laptop into Suspend mode. Turned off master power at surge protector. about 4 hours later tried to Unsuspend. Could not Unsuspend Pressed power button on laptop for several seconds to shutdown laptop. Saturday morning - June 3, 2010 After Ubunto booted up, launched Firefox. No internet access. File-> showed "Work Offline" checked. Unchecked it, but that didn't fix the problem. Rebooted, and still no internet. Tried an alternate cable (which was working with a desktop Winows XP computer) between router and laptop. Still no internet. Used terminal to ping the IP address of the router - ping unsuccessful.

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Ubuntu Networking :: Bizarre Wired Network - Download Updates And Firefox

Jun 3, 2010

I have a dual-boot Compaq CQ60-420US laptop. It can connect wirelessly in Vista without a problem. I have not yet figured out how to connect it wirelessly in Ubuntu (10.04, Lucid), but that's not the problem here. The problem here is on the wired side. Whether I boot in Vista or Ubuntu, I cannot get it to go online. Ubuntu says that the Auto eth2 connection is established; I am able to disconnect and reconnect it normally; but I can't download updates and Firefox can't connect to CNN.com. Likewise, in Vista, diagnostics find no problem; everything seems to be fine; but no connection.

I thought the problem might be the laptop's ethernet port, so I bought a Trendnet TU2-ET100 USB-to-Ethernet adapter. It comes highly recommended; it seems to have installed successfully in Vista; it appears properly in Vista's Network Connections; its lights are blinking appropriately; and Ubuntu tells me that my Auto eth2 connection is established when I connect through that adapter. And yet still no connection to CNN.com and no downloads of updates in either OS.

I wondered if some other circuitry might be at issue, so I sent the laptop back to HP. They claim to have replaced the mobo. The symptoms remain unchanged before and after. I went through an extensive tech support call with HP. The last thing their technician could advise was to power cycle the laptop and router. The ethernet connection itself is good. I can unplug the cable from the laptop's ethernet port or the Trendnet unit, plug it into the desktop computer on which I am typing this note, and I'm connected with no problem.

I thought, well, maybe I have to have the laptop's wireless button on, even when I want to connect via wire, but that hasn't made a difference. I tried installing Windows drivers from the Trendnet website instead of from the CD; no joy. I suspect you will be as stumped as I am. I have gone through a lot of other people's comments. At this point, I am just interested in general possibilities. What, in theory, could be causing this?

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General :: Windows - Establishing A VNC Connection Through A Firewall?

Jun 28, 2010

What's the best way to establish a VNC connection to a computer located behind a firewall/router, to which you don't have access? I have a home Linux computer on a Comcast connection, which explicitly blocks incoming requests, so I can't hit the IP directly, but I'd like to remote into it from an arbitrary Internet connection. How would I work around this?

I've witnessed some commercial products, such as one employed by Dell tech support, which appears to use a public web server, which you visit from the target computer in order to "expose" it to an incoming VNC connection. Is there anything similar that's free/cheap for personal use?

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Ubuntu :: Slow Download Speed - Establishing A Connection With The Tracker ?

Feb 11, 2010

I am currently using Ktorrent on Ubuntu9.10, the torrents either have a slow download speed or have trouble establishing a connection with the tracker. I have no such problems when I was using utorrent on Win XP.

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General :: Can't Open Webpages After Establishing A Dialup Connection / Fix It?

Aug 7, 2010

I have set up a dialup connection using my nokia N70 mobile.. The connection i think, is ok. but when i took a browser-epiphany or mozilla, i cannot open a webpage.. the browser tries to connect but times out.. It seems to be a problem in some settings(firewall, proxy or something) in debian, because im using the same phone to connect in windows XP.. I dont know how and where to check for the settings. code...

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General :: Error Establishing An Encrypted Connection To Login?

Apr 14, 2011

I am using Redhat 9 and get the message error establishing an encrypted connection to log in. Error code 8155. How can I correct this as I cant access sites to check my mail.

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Ubuntu Security :: Establishing A SOCKS Proxy Connection At An Internet Cafe

Aug 7, 2011

I've got my netbook set up so that I can run a SOCKS proxy via my desktop machine. This works fine at home, but I'm wondering what happens at an internet cafe with public wifi.

Specifically, the connection needs initially to be set up with an ordinary direct internet connection so that I can log in to the cafe's router. I'm concerned that when I then set the network proxy to SOCKS host, the router will cease to recognise me and will disconnect me. This particular detail doesn't seem to have been covered in any instructions that I've seen (maybe I haven't looked hard enough).

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Ubuntu Networking :: Wired Networking - Connection Works But No Internet

Jun 1, 2011

I just installed Ubuntu 11.04 desktop on my desktop in dual boot with Windows 7.

Heres my problem, I am unable to connect to the Internet even though my wired Ethernet connection says it is connected normally. The wierd thing about this is that I also have a wireless card in my desktop and when I connect through that I am able to connect to the Internet. I am connecting to a router that is functioning as a repeater to my main router/cable modem. I have tried to solve this myself but am having no luck. Ironically, earlier today suddenly my ethernet connection worked for a few minutes without me modifying anything.

The output of some terminal commands are below.

Quote:

Quote:

Quote:

However a pint to that ip address (my router) is successful.

Quote:

Hosts.allow and hosts.deny are both fine (not blank but no entries)

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Ubuntu Networking :: 9.10 - No Wired Connection (Now Offline)

Jan 22, 2010

I have two PCs one has Windows XP the other has Ubuntu 9.10 on it, the Windows PC has no problems getting on the Internet (I'm posting this with it) and getting an IP address from the wired router. The wired router I have is ONLY wired it does not have wireless at all, it is currently setup to hand out IP addresses between 192.168.1.2 and 192.168.1.254.

The Ubunutu 9.10 PC worked great last night surfed all over the place for hours, then finally shut it down last night when I went to bed, shut down appeared to be normal like it always does when it shuts down, then this morning when I booted it up it gave error: "WIRED NETWORK - disconnected you are now offline".

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Ubuntu Networking :: 802.1X Authentication For LAN (wired Connection)

Mar 15, 2010

I am using ubuntu in my new office, and I can't get the network working. The "official" OS installed was a Windows, and it has a special "dial-up" app for the LAN connection (not wireless). My network admin is apparently not helpful, since he actually knows nothing about the internals for the "dial-up" app (he did not even ever heard of TTLS, PEAP, MD5, etc), and claimed that no OS except for Windows can work...

Well, I have tested various configurations with my Mac laptop, and apparently the LAN connection requires 802.1X authentication, and it's using a very weird combination "TTLS+PEAP+MD5" (if I check these options in Mac OS X, the connection works). However, in NetworkManager, I can't select both TTLS and PEAP, and moreover, TTLS does not work with MD5. So, is there anything I could try?

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Ubuntu Networking :: No Connections Tab - No Wired Connection ?

May 17, 2010

Fresh install of UbuntuStudio 10.04. This is really bizarre.

I can't seem to connect to the wired connection mainly because there is no connections tab (pic attached).

Here's some printouts:

dmesg:

Code:

lshw -C network:

Code:

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Ubuntu Networking :: Wired Connection But No Internet?

Jun 1, 2010

When I unplug the ethernet cable from this laptop and plug into my Ubuntu 9.10 Desktop I get a wired connection automatically but I have no internet connection in Mozilla

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Ubuntu Networking :: Wired Connection: WAN Drops But LAN OK

Aug 17, 2010

I've had a computer running Ubuntu connected to my TV for a few weeks now, but as of yesterday, I can't get it to keep a connection to the Internet. Everything works well for an hour or so after a reboot, but then no WAN connections work. When this happens, no sites load in Firefox or Chrome, I can't ping Google, I can't SSH to the box from work, and none of the pages I have running on apache load from remote computers. However, all local area connections seem to work fine. SSH from within my LAN takes much longer than usual, but it does still connect.

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Ubuntu Networking :: Connect Dsl & Wired Connection With NM?

Sep 1, 2010

The situation is I have one machine just installed 10.04yesterday, and I plan to take it as FTP server sharing filesvia LAN and WAN as wellBut after setting up all network withNetwork-Manager found that my dsl connection willdisconnect while my wired connection was connected.

my network-manager setting process is:
1.wired tab:
IPv4:192.168.1.x

[code]....

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Ubuntu Networking :: 10.10 Wired Connection Not Working?

Nov 1, 2010

I have a wired problem in Ubuntu 10.10, My Ubuntu can connect with Wireless network, however it cannot connect to Wired Connection. I installed dual System, one is Ubuntu 10.10, the other one is Win7. Under Win7, I can both connect to the Internet in Wired or Wireless mode.

The more wired phenomenon is: When I plug in the cable, I can see the icon connected in my network manager. But I cannot visit any URLs. By checking the "ifconfig -a", I can see the IP addr was assigned to my eth0.

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Ubuntu Networking :: No Wired Network Connection?

Nov 19, 2010

connect to wired LAN in ubuntu 10.04? I think I have specified the IP address and everything correctly. But it says no connectivity. In windows it says connected but I am unable to open any webpage.

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Ubuntu Networking :: Wired Connection Not Working-10.04?

Dec 4, 2010

installed Ubuntu 10.04 on my Dell 1564. My cabled netwo connection is not working.buntu has been dual booted with Windows 7. Internet connection on Windows is working. I have an ADSL modem connected to my laptop via the cable.I have given the details of commands asked to be execute(viewed various posts).

isr@ISR:~$ lspci
00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 12)
00:01.0 PCI bridge: Intel Corporation Core Processor PCI Express x16 Root Port (rev 12)

[code]...

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Ubuntu Networking :: No Wired Connection On New Install

Dec 16, 2010

I recently did a whole system wipe and got rid of windows all together!! Unfortunately, that means I have to start over with the whole networking thing. I know I have a bcm4311, but I have no idea what I have for a wired adapter. I know that I could search through everything to find what I need, but there is so much info for all the different versions. I have ubuntu studio. Can someone tell me the commands to type into the terminal to find out what I have for the wired network card and recommend a place to get the proper "drivers" to get my computer working again?

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Ubuntu Networking :: Wired Connection Not Working

Jan 7, 2011

Running a wired connection through a Linksys router that suddenly stopped working today.I thought this was a ipv6 issue sinced I enabled some of those settings to share a connection with my PS3.I have since disabled IPv6 in Firefox and through the grub. The RealTek adapter will not even show a connection through the network manager when connected.The onboard adapter will show a connection, give me a ip address and MAC but still will not load the internet. I've tried uninstalling and reinstalling both adapters through the network connections, as well as reinstalling Firefox to no avail.I've also tried using Open DNS servers.I cannot ping through the network tools either. Hard for me to paste a ifconfig since I'm on my laptop.I'm running Ubuntu 10.10 (not dual booting).I did some updates this morning but it worked fine for a little while after that, until I tried to connect to my PS3.

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Ubuntu Networking :: Unable To Use The Wired Connection

Apr 19, 2011

i got wired connection using Ubuntu 10.10 and im new using ubuntu pls tell me where i must write the words not to write codes and i don't where i must do it.what is the best version of Ubuntu didn't had that problems?as i saw that Ubuntu 10.10 had same problem for all people.

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Ubuntu Networking :: Connect To The Wired Connection Using 10.04

Apr 20, 2011

i can't connect to the wired connection, but i can connect to the wireless... i'm using Ubuntus 10.04. when i run this codes into the terminal it shows:

root@valdivia-laptop:/home/valdivia# sudo lshw -C network
*-network
description: Wireless interface
product: AR9285 Wireless Network Adapter (PCI-Express)
vendor: Atheros Communications Inc.
physical id: 0
bus info: pci@0000:04:00.0
logical name: wlan0
[Code].....

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Ubuntu Networking :: 11.04 Wired Connection Failed?

May 4, 2011

A while ago i attempted to use ubuntu as my default operating system and it failed, i could not get the shares to work properly and i gave up. Yes i know, may be i should have kept going.

Any way, my problem is, Im attempting to use ubuntu 11.04 now, and this time i am realy keen on going through with this, however... for some reason when i connect my wired connection cable ubuntu keeps failing to connect. this is with the auto eth0.

Can any one help me with this problem? This is one of the major things that i will need to do if i want to switch over to ubuntu.

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Ubuntu Networking :: No Wired Or Wireless Connection

May 6, 2011

So I had 11.04 beta and after the official release I updated,rebooted and lost all wifi and wired connectivity.

On an Inspiron 9300
lshw -C network gives
*-network:0 UNCLAIMED

For my Broadcom BCM4401-B0 100Base-TX and *-network:1 DISABLED For my wirless interface Intel PRO/Wireless 2200BG

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Ubuntu Networking :: No Wired Connection Detected?

Jun 20, 2011

I'm running 11.04 on a Toshiba Satellite L350, and recently (well, for the past couple of weeks or so), I've been unable to connect to my network via a cable, only with wifi.

It isn't that it's unable to connect, it just doesn't show up in Network Manager.

My housemates, who run Windows, have no problems, so it's obviously something on my end...

Edit: I also tried connecting using wicd, but that doesn't detect it either.

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Ubuntu Networking :: Wired Connection Not Working, Tried Everything?

Sep 1, 2011

I recently installed 11.04 on my PC (was running 9.04), and beforehand "tried it out" and networking was fine. I could access the internet no problem.I then ran the install, and fully formatted my HDD (i have 1 HDD for the OS and another for storage)It crashed halfway thorough, so no problem, i just re-formatted the hardrive and installed.However, It didnt connect to the internet, I literally tried every single forum looking for the solution, including editing the Network interface file.After a bit of diggingfound my user privileges did not allow me to connect to ethernet, and randomly use audio devices.SO, no problem I checked the boxes, but it still wont connect to the ethernet now, and it was fine before, tried re-installing twice with full format, but still doesnt work.

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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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