Ubuntu Networking :: Internet Access Allowed When VPN Connection Lost?
Mar 16, 2010
As I view it, Ubuntu has a great security risk in that it still allows internet access when the VPN connection has been lost, for whatever reason. As it is now, when the VPN connection fails you get bumped back to using your regular IP, and whatever you are doing becomes transparent to anyone watching. This is simply unacceptable for an allegedly secure platform. Does anyone know of a way to fix this with a script/program, or is there a distribution/OS that allows this? Windows re-dials the vpn automatically, but still allows internet access in the mean time.
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Jan 23, 2010
I am running ubuntu 9.1 on a Dell Dimension 2400. After installing ubuntu on the pc, it was automatically recognizing my router and connecting to the internet fine via ethernet. Then, my roommate unplugged the router and it won't recognize it. I can't access my router settings, and ubuntu is recognizing it as "inactive" but every other computer in the apartment runs fine. My PC uses a broadcom ethernet controller, and my router is a Linksys wireless N.
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Jul 25, 2011
I was running 8.04 and my internet (Comcast) comes via a Motorola SB5100 cable modem then into a Netgear router then into my Dell. When I upgraded to 10.04 yesterday, I lost the wired connection. The wireless connection still works fine, but I have not been able to get a wired connection. Also, most online solutions reference the Network Manager, which is nowhere to be found.
Anyone have any solutions? I would be willing to revert to 8.04 if needed, as that worked fine, and obviously I quite regret the upgrade!
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Nov 24, 2010
I am a non-techie, have been gratefully using Ubuntu 8.10 for a few years for the basics: email, web, documents, photos. I have somehow lost my internet connection, but strangely my email still works...!?!? My router is showing all the correct green lights, but I cannot get to any url. I am posting this thread via work (windows) pc. I have searched on this forum and in anticipation have done as much homework as possible, see below.I have a Netgear wired router. I cannot find Network manager on the menus and tried this from the terminal:
Code:
network-manager
bash: network-manager: command not found
networkmanager
[code]....
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Apr 23, 2011
I do have a problem with my internet connection at home, I've a Huawei router and ubuntu 10. When I connect to the internet whether wireless or wired I become able to surf the internet for less than 10 min then it cuts off! and to be able to surf it again I need to restart the whole system!
I used this command to restart the networking but in vain
Code:
sudo /etc/init.d/networking restart
On windows I do not face this problem with the same internet connection. I do not face it either when I'm using my campus wireless connections using ubuntu/windows!, so the problem is related to my home connection+ my OS.
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Apr 24, 2011
Like the title says, is there a way to restart the computer if the internet connection is lost?Is this possible on ubuntu?
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Dec 8, 2010
We have an Asterisk machine that we suspect periodically loses internet connectivity, causing all calls to drop. First, would this sort of thing be logged anywhere out of the box? I haven't noticed anything in /var/log, but that doesn't mean it's not there. If this is not typically logged, how I might go about logging it? I'm currently running a bash script from cron every 5 or 10 minutes which pings Google and writes success or failure messages to a log file. This works fine for extended outages, but if the internet connection drops and comes back between cron runs, it won't be caught.
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Jun 16, 2011
I installed Fedora today, and I automatically had internet connection, I never had do configure anything myself. Then, I was playing around with VPN for a good while (trying to set up the VPN connection to my University), and now, I suddenly lost my connection to the internet!
But only Fedora can't connect anymore, the Windows PC has connection as well as my Mac OS X (I dualboot Linux on my MacBook). The Ethernet connection works as well, when I unplug the cable, Fedora gives me a message, but I just don't get into the internet!
Does anyone have an ides what I have to do? I don't know anything about network connections and I'm new to Linux...
I already restarted the Computer, but that didn't work, and Google didn't really held either.
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Apr 5, 2009
I have fedora 10 and am having problems with the wireless access. My computer uses the Realtek Semiconductor Corp. RTL8187B Wireless Adapter. It connects to the network, it gets an ip address and a broadcast address, but it loses connection within 3 min. I'm also new dealing with linux and fedora.
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Apr 6, 2011
I have been using ubuntu netbook 10.10 on my Dell Mini 9 for the past few month without any problem; it connects wirelessly to the internet via a wireless router. Yesterday in the middle of web surfing, suddently firefox cannot see any website outside of my home network (Firefox displays Server not found page). No help when I rebooted a few times and connect to my home network via wireless or even wire cable; it can access files in my network file server (DNS-321) but not the internet. My desktop computer running Windows Vista and ASUS media player has no problem accessing the internet.
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Apr 18, 2011
After i install it i lost my internet connection . i got a message " Wired Network " " you work offline ". i use cable ADSL ,.... my Pc information HP Pavilion 6700 running with both Window 7 & Ubuntu 10.10 note... my network connection work correctly on W7.
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Nov 8, 2010
I would like to be able to monitor which programs are allowed to access the internet, but a search for programs to do this has turned up nothing. Preferably, I would like a notification to come up every time an application uses the internet. Is there any (n00b friendly) software available to do that?
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Feb 5, 2010
I am attempting to connect Ubuntu 9.10 to the Internet.I have a network connection, and Karmic detects it fine. I can ping addresses within our network (e.g. the Windows computer in the next room), and I can ping the router, but if I ping, say www.google.com, it says "Destination Net Unreachable". Previously, in Jaunty, I had a similar problem.I found a workaround: launch Pidgin. Somehow, launching Pidgin temporarily edits my configuration. However, in Karmic, I have no access to Pidgin, however, and Empathy does not do the same thing. Since I have no Internet, I cannot "sudo apt-get install" anything.How can I get the Internet working?
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Jul 25, 2010
I have recently installed ubuntu 9.10. Earlier I had ubuntu 9.04. On that my internet was running perfectly well.After installation I created new connection as I had done for 9.04 version using "Network connections , Edit connections". However, after configuring connection(uname , password etc.) I wasn't able to access Internet.So I tried using "pppoeconf" utility. After using this now whenever I click on network connections applet on top panel , it shows in menu "device not managed".Can somebody point out what went wrong and what to do so as to be able to acess Internet in ubuntu?
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Dec 6, 2010
I had been happily using a wireless connection for about two weeks. The connection then went down for a few days. Since it came back up, I can connect to the network, but cannot access the internet. Other users of the network can both connect to the network, and access the internet, though people have experienced the same problem as me the last time the network went down (they could connect to the network but not access the internet). I have tried deleting and re-starting the connection, to no avail. I have looked around the forums, but haven't found anything that can help: do any of you have any suggestions? I am malarial and at the end of tether.It is not a problem with Ipv6, which is set to ignore, as it was in the past when the connection workedI am running Ubuntu 10.10 on an X61 Thinkpad. Below is the output of iwconfig, route -n, lspci, and what happens when I ping other network
Iwconfig:
eth0 Link encap:Ethernet HWaddr 00:1d:72:9e:09:8f
UP BROADCAST MULTICAST MTU:1500 Metric:1
[code]....
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Jan 17, 2011
My Internet connection works.Using no VPN connection, I can access the Tnternet from the gnome-terminal (ping, apt-get, lynx), as well as from any GUI application.As soon as I establish a VPN connection via openconnect, GUI applications such as firefox, transmission and thunderbird still work.But terminal applications (such as mutt, apt-get etc), some daemons (like mpdscribble) and some GUI applications (such as the easytag cddb search) don't work anymore.
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Jan 26, 2010
With Encrypted Wireless Connection Not Able to Access Internet - no pings, internet browsing, etc. However, without encryption I am able to browse the internet. I need encryption ..
I am pasting diagnostics collected by shell procedure collectNWdata.sh..
Code:
collectNWData.sh V0.6.2.0 (Rev: 1.193, Build: 2010/01/20 21:22:30 UTC)
--- Which type of your network connection should be tested?
--- (2) Wireless connection (WLAN)
--- What's the type of networktopology?
[Code].....
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Mar 28, 2011
Okay, a couple of weeks ago I was running 10.04, got an auto update that needed a firefox restart, so rather than restart, I just shutdown the computer for the weekend. When I booted the computer on Monday it would find sites (www.google.com, start.ubuntu.com) but it wouldn't download the necessary items to load the page. Now I have a windows laptop sitting next to the ubuntu box and it was online with no issues, so I know it wasn't the connection itself. So I decided that the update messed up the system so I downloaded 10.10 and installed that and ran that all last week.
On Friday I got a system update that required a firefox restart, so I ran firefox for the day and decided that since it was friday, I would just shutdown the computer and reboot on Monday.Well now Monday is here and now I again have sloooowww internet, to the point that URL.. times out and won't come up. I have tried doing a traceroute on both machines and the windows box gets all the way to www.google.com, but the ubuntu box gets about halfway there and then gets no response. I am at a loss, I don't want to reinstall every week. I did try to reboot and run the previous version of 10.10 that shows in the boot menu, but that does the same thing. One thing I did notice is that the broadcast ip is different than the machine IP, don't know enough to know if this is a problem.
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Sep 22, 2010
Recently I had installed Ubuntu 10.04 in which I had connected to the internet by way of terminal (pppoeconf) and I could access any site with ease.But one fine day suddenly I could not access the net, I try to locate the notification icon (network manager),but could not find it.I did this and that,googled it trying to find the solution but alas to my disappointment I had to format it.
After reinstallation of Ubuntu I connect the internet by way of editing connection on panel and i could access the net. The problem is that I could not access some site especially org site e.g Home - Desiring God so can anybody guide me in how to connect in most better way.
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Feb 23, 2010
Somehow I lost Internet connection and tried various threads and still does not work.
When used the liveCD I can access Internet
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Jun 12, 2011
I'm running 10.10 and I uninstalled some files through synaptic and it also removed a lot of other packages which messed up my whole system. I lost the connection to the Internet and also the taskbar. I don't know how to re-install those lost packages because I have no net connection. How can I fix this? This is what I removed:
Completely removed the following packages:
apt-xapian-index
libboost-python-dev
python-xapian
[Code]...
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Nov 30, 2009
Three months ago my daughter went off to college with a new computer. I zapped her old system and successfully installed Ubuntu 9.04 from a CD. Everything worked fine including all the peripherals and the wireless internet connection. I was able to download and update applications without a hitch. Great system and so much cleaner and quicker than Win XP on the old machine. Then the system was shut down and lay idle for three months.When I fired it up a couple of days ago, all seemed normal except I could no longer access the internet even though the wireless network icon showed four or five bars. I first discovered the problem when I tried to update though Update Manager and noticed that 22 identified files could not be fetched. Neither Firefox, Skype nor Goodgle Earth can connect.
The router is a Linksys WRT54G router that connects to the computer through a Linksys WUSB54G USB network adapter. The router serves three other non-Linux computers without a problem, including one using the same model network adapter.I don't have much experience with Ubuntu, but this is some of the information I have been able to generate.
I tried a few of the recommendations found in other sites, but nothing seems to do the job. I am perplexed because everything was great until I shut down the system for three months and then started it up again. I appreciate any assistance and would be happy to provide additional information as requested.
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May 20, 2011
I played with the Network Settings section in YaST, because I wanted to use the wireless network card I installed into the PCI port. OpenSUSE recognised the type of card and its MAC number, and told me that I needed to install a firmware (fwcutter something). I tried some changes on the cable internet connection (like activate on plugged) while I tried to change the wireless connection (like activate on boot).
What I have now is that my cable internet connection is not working at all (it was working just 3 days ago), my wireless internet connection is, as always, not working either. I managed to work the wireless card on Windows XP by finding its drivers.
Since the problem is with my office computer, I cannot answer the exact brand names of the ethernet card and wireless card. Shall I reinstall OpenSUSE 11.3 from the DVD I have?
Second problem: OpenSUSE does not recognise my external harddisk, it gives an error about mounting the device.
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Jan 29, 2011
Using acer aspire one (ZG5) and have lost connection to Firefox browser after changing setting to make google my home default web page. I have no experience with linux so any help would be appreciated. There's no problem with my internet connection it shows connected.
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Feb 14, 2011
I installed ubuntu 10 just yesterday. Everything was working just fine. The auto-update function advised me to download and install the latest updates and so I did. It was over 300 MB. I installed it, did a reboot and my internet connection was lost. I tried a few things I found on this forum yesterday. Nothing worked. I can go on-line on the same computer using windows 7. But I always have to reboot to try the different solutions. All right that's fixed! But now I just have to fix Firefox...
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Oct 29, 2010
When I make a vpn connection to an openvpn server, I loose the internet connection.
The VPN works all right.
Server config (extract)
Client config
Client route without the VPN connection
client route with VPN connected (internet lost)
Is there anything I can do to the push rule of the servers's config file?
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Jun 21, 2010
After having updated unconditionally all packages in Kde-desktop-factory-repository to get the latest version 4.4.4, I can no longer connect to the Internet through Knetworkmanager. I receive the the following message from a pop-up window when clicking on the Knetworkmanager icon
Code: KNetworkManager cannot start because the installation is misconfigured.System DBUS policy does not allow it to provide user settings; contact your system administrator or distribution.KNetworkManager will not start automatically in future.I tried opening Knetworkmanager in a terminal as root user through 'su' but received the following message:
Code:# knetworkmanager knetworkmanager(2331): KUniqueApplication: Cannot find the D-Bus session server:"Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken."
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Feb 4, 2011
I have an Acer Aspire One Netbook that has lost connection with the Internet. On clicking the Browser button I get a message saying "Your wired device is now connected" - but nothing happens. It was working fine up till about a week ago. A substituted computer will work OK from the same output from the Router/ Modem through the same cable.
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Jan 9, 2011
I am running Ubuntu 10.10, and I would like to use my computer to share the internet connection from an ethernet port. For example, I would like to set up my computer as a wireless access point so I can create a network that other computers can connect to for internet.
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Apr 6, 2010
I just upgraded from Suse 10.x to 11.2. Unfortunately, I didn't use 10.2 much and I('m a bit overwhelmed by the upgrade. Any advise is greatly appreciated.
After my upgrade, I lost Internet access. I don't really know my way around too well, but I did try to ping my router, but had no success. (Although I can ping 127.0.0.1).
I'm guessing that this means network access is not configured, although it looks OK to me.
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