Ubuntu Networking :: How To Disable Internet / Networking Capabilities
Jan 10, 2010
I suffer enormously from net addiction (as well as gaming addiction and related behavioural maladies).I've had revelatory success in controlling my time online-and, in general, in front of a screen with unproductive applications- by locking my monitor's power cord into an Ems PowerCop (the key to which I keep at work). Writing and journaling, I do on an AlphaSmart Neo. However, I could really use a tool to allow me to edit and typeset my writing (and only those tasks).I'm considering buying an ultra-low cost net-book.I want a netbook because it's the cheapest way to keep the display power fully dependent and integrated with the machine---I can't have something that will allow a simple means of working around the Ems PowerCop. Also, since it lacks an optical disk drive (and since I'll be keeping my usb drives at work) there will not be an easy way to reinstall the operating system. However, before I buy anything, I need to know that, after installing/configuring all of my preferred settings for vim and La/Xetex, there is a way that I can cripple the netbook and all of its applications so that no internet access is possible.
The Cherrypal Africa can come with either Ubuntu, Debian, or its own Linux blend, Green Maraschino. If it ends up being either Ubuntu or Debian, what can I do that will irreversibly (at least, from a software level---a hardware level would probably require damaging the usb ports, which I don't want to do) disable its ability to try to communicate with the internet (including the software repositories)? I'm hoping for a particular system file that I can delete rather than the addition of a command somewhere that would be easy for me to undo when I'm bored out of my mind and want to see what Wikipedia has to say about the glycemic index.
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Mar 27, 2010
I recently installed Ubuntu 9.10 onto an older laptop for my boss. However, after installation I lost all internet capabilities... both through wireless and ethernet connections. There is zero indication that Ubuntu is picking up any wireless connections at all and when I plugged into an ethernet connection Ubuntu acts as if it is trying to connect, however unsuccessfully. I have eliminated the internet connection as my problem because I was able to connect with my laptop running 9.10 with no problem. I have searched and searched everywhere for fixes to this problem however 99% of them need an internet connection to install the required firmware and drivers... is there any OFFLINE solution out there?The computer is a Compaq Presario 2200 with a Boradcom Corp BCM4306 802.11b/g Wireless LAN Controller
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May 27, 2010
I have searched for hours and have found nothing that works. Its just amazing that I have not destroyed my laptop yet. What I want to do is keep my child off the net under his user account. I have Karmic installed currently. I have tried adding an iptables rule: sudo iptables -A OUTPUT -p tcp -o eth0 -m owner --uid-owner test -j REJECT
That does not work. So then I tried to disable the network card for just one account... no go.I can only stop access totally for both users which doesn't work for me very well. No method gives me what I need. I want a way so I can login and use the computer normally AND an account he can login to and use but with no web.
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Oct 15, 2010
I have two connections for my PC, my Ethernet which is on the corporate network and my smart phone on 'usb0'. Both have full internet access.I want to stop my PC from connecting to the internet over the Eth0 while still connecting to internal servers then just have internet over usb0.If I go to the settings of 'Auth Ethernet' in the tray area, under IPv4 there is the routings section - I've tried enabling "use this connection only for resources on its network" but it doesnt work.
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Jul 19, 2010
writing a script that will enable/disable internet connection on the one of the machines in the network(be it a DNS clearing or something else).
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May 31, 2011
I'd like to modify a linux distro, specifically Puppy, so that the drivers/mechanisms for mounting local HDDs and Networking is Disabled completely. A step further than simply disabling "auto-mounting" at boot time, I don't even want mounting to be possible (at least by default).Likewise, further than just disabling network devices, I'd like to remove the ability to use network devices. How are these "mounting" and "device drivers" mechanisms implemented, where are they, and what are my options?
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Jan 29, 2011
My wireless can connect to my router without a problem, but in order to do so (after boot) I must first disable networking in the Notification Area and then re-enable it. I don't mind it too much, but when other people use my computer, it's made painfully obvious to me, that this was never an issue with Windows 7 (as much as I despise MS).
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Apr 18, 2011
I have a server with two ethernet ports. I configured eth0 to be static, set at 10.1.10.148. I plugged in another router into the other ethernet port in order to configure that router. I configured eth1 to use dhcp. Using /etc/network/interfaces rather than gnome network manager. When I did this, I lost internet connectivity (internet routes through eth0 of course)
- Why did I lose internet connectivity?
In order to recover internet activity, I had to disconnect the new router on eth1 of course, and do sudo ifdown eth1. That wasn't enough however. After rebooting numerous times and pulling out my hair, I finally tried configuring eth0 as dhcp, rather than static, and this fixed the problem.
- Why didn't sudo ifdown eth1 solve the problem? What information was saved between reboots that somehow remembered that I plugged in the new router? Because my thinking was if /etc/network/interfaces was identical, and the network topology was identical, after a reboot everything should be restored, but it wasn't.
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Oct 10, 2010
I can't upgrade to Ubuntu 10.10 because it said that there's a problem with my network connection. When there's none, since I am typing this now.
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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.
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However a pint to that ip address (my router) is successful.
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Hosts.allow and hosts.deny are both fine (not blank but no entries)
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Apr 8, 2010
I have an HP workstation running Red Hat Linux 5 that is currently configured for a static IP connection. I wish to keep the existing network configuration, but I want to be able to use the workstation and log into my accounts when I am not connected to the network. I have tried using the following methods to disable the network with no success:
1. I set the "ONBOOT" parameter of the ifcfg-eth0 file to "no".
2. I set the "Networking" parameter in the /etc/sysconfig/network file to "no".
3. I moved the /etc/resolv.conf file to /etc/resolv.conf.OFF
[code]....
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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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Mar 6, 2010
I have installed fedora 12 recently. after installation i tried to connect to the internet using BSNL broadband connection. I filled in the details such as IP, Netmask, Gateway and even DNS servers. In the services also I ensured that the network manager services is on. However even though my computer cannot connect to the internet. I then tried the ping test of the modem from the address 192.168.1.1 and found that the ping test is successful. Then i tried the network administrator and there I noticed something unusual.
There are two options in the devices eth0 and eth1 thats ok but the unusual; thing is that the Activate (green button), Deactivate (red button) and even the delete buttons are in the background and I cannot select them. Isthis the problem for the network connectivity.
[Code]....
I then tried the ping test of the modem from the address 192.168.1.1 and found that the ping test is successful. Then i tried the network administrator and there I noticed something unusual. There are two options in the devices eth0 and eth1 thats ok but the unusual; thing is that the Activate (green button), Deactivate (red button) and even the delete buttons are in the background and I cannot select them. Isthis the problem for the network connectivity.
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Sep 10, 2010
I'm not really a newbee in Linux but I am a newbee in networking. I have both a Ubuntu laptop and a Gentoo desktop computer. I have just bought me the MBR1000 Cradlepoint router and it works great with my Verizon USB 760 modem plugged in it. I can now send and receive email on my Ubuntu laptop. I like it.My Gentoo desktop computer is just sitting there with no Internet access because my Verizon modem is no longer plugged into it but plugged into the router instead. Only my laptop now has Internet access. The laptop has an integrated wireless card built in the MB but my desktop has no such capability.
Is there a way (besides buying a wi-fi adapter) to get Internet access on my desktop computer through networking so that the router would give both computers Internet access at the same? My Gentoo desktop does have an ethernet adapter that perhaps I could useThe router has several LAN ports and one WAN port, both unused.
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Sep 1, 2010
I am trying to connect my desktop to my laptop over a non-internet connected LAN, but when i enable the LAN connection on my desktop (the one with the wireless) its internet stops working.
it is a very similar problem to this except that i am using ubuntu for the machine with the two connections.
right now i have my wireless on the 192.168.1.* address space, while the LAN is to be on 192.168.5.*
note: my goal is not to share internet with my laptop, just be able to connect to it and the internet at the same time.
desktop: ubuntu 9.10 , wireless and LAN
laptop: windows xp, LAN only
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May 25, 2011
I'm trying to set up a wireless AP with Internet sharing. I currently have the AP setup with hostapd and a dhcp server. The clients can connect but there is not Internet sharing. Now my situation is somewhat uniqe in that my internet connection is my teathered android cell phone. The tether app is azilink and i use openvpn to create a virtual networking interface(tun0).
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Feb 1, 2010
On this box I have Two seperate Ubuntu installations. Recently in both I seem to be having the same problem. I initially can connect to the internet as per normal and use any internet application. But after a period of time, sometimes just minutes, sometimes hours, even though the icon says connected, I cant update pages or send emails etc because there is no actual connection. My Physical connection is good I know - My Ubuntu laptop and Windows gamming PC connect fine during this period. So
Does this suggest an intermittent hardware fault or is there some thing in Ubuntu I can check to make sure that it is setup correctly and nothing has been corrupted? I am a lay PC person - I dont really want to be command prompting - Plug & Play and Point & Click is my limit.
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Oct 21, 2010
I tried to install Xubuntu 10.10 Maverick as dual boot on my laptop. However when xubuntu is on, I can't find a way to connect to internet. When I try the 2 arrows on the up-right corner the option for wireless is deemed. I tried offline/online, that did not work either. when I click the firefox It says you are not connected.
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May 1, 2011
I seem to have is trying to get the internet to work. I can go to ..... ect but when I try to run playonlinux it says you do not seem to be connected to the internet, please post if you have anything useful, as I said I am very new to linux so be as detailed as possible.
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Apr 2, 2009
I have tried to disable the ipv6 support in ubuntu 9.04 32bit but the /etc/modprobe.d/aliases does not exist so I can't disable the suport as sugested for the previews versions. I need to disable it becouse it is pounding a total maihem in my vamware machines.
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Aug 30, 2010
I was told that the reason I'm having network performance issues is due to "generic receive offload" on eth0. I was told to use the following command:
Code:
ethtool -K eth0 gro off
Does anyone know what exactly this is disabling / correcting for my NIC performance
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Feb 14, 2010
I don't use wireless on my desktop so i would like it permanently disabled...each time i boot up it's back and receving up to 80mb of data from an unknown connection via wireless (i dont use wireless) so, to avoid any weird connections to my neighboors house or some kid hacking the neighborhood driving by with a wireless router in his truck i'd like to permanently turn off wireless. this is kind of funny because i had a hard time getting wireless to work on my laptop, but this is my desktop where i do not want it. i looked it up and your forum back in 2007 said to type in iwconfig in the shell then get the nickname of the wireless card then to black list the wireless card. i did this but it didn't work, so what do i do now? i have ubuntu 9.10
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Oct 13, 2010
I have a strange problem with my networking under Ubuntu. When I first log in to Gnome both my network adapters are listed as "disconnected" in the network manager applet. If I right click on the notification icon and disable networking, then wait a few seconds and re enable it, it works fine.
It's happening consistently with Maverick although it seemed only temperamental with Lucid. I did a fresh Maverick install to see if it would help but it hasn't.
It's the onboard network sockets on a Gigabyte GA-X58A-UD7. I have two ports but I only use one, it doesn't seem to matter which I use. It's connected via gigabit ethernet to a Netgear router. It works fine in Windows 7 (dual boot).
It looks as though something's not quite "ready" when gnome first launches. The light on the router for the cable is off at first, and only comes on after a few seconds. It's DHCP. Same thing happened on the live USB stick (just before the isntaller) and disable/reenable made it work.
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Aug 7, 2010
How i do disable Network Manager in ubuntu 10.04 ?
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Sep 30, 2010
Is it somehow possible via software to disable NIC in such manner, that even "link protocol" in Cisco switch will not come up? I connected laptop eth0 port to switch port and console cable to switch management port as well. If I do "ifconfig eth0 down" or "ifdown eth0", the link protocol still stays up. Even after "modprobe -r e1000e" autonegotiation between NIC and switch port takes place and link protocol comes up As far as I know, there are no possibilities to disable NIC using the ethtool or mii-tool.
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Jan 4, 2010
have had a problem with my ubuntu system recently in that it will only let me connect to the Internet through Firefox if I switch network.dns.disableIPv6 on. How do I do the equivalent in Ubuntu to enable me to use Ephiphany etc which are not working anymore
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Jan 15, 2010
I work for a regional cell phone company, and have recently taken it upon myself to create some documentation that will aid our mobile broadband users with installation of the aircards we carry.I decided to start out with Ubuntu 9.10, and I am using a Novatel mc727. I set it up using the mobile broadband feature that is built in, but I am having a few problems. First I have noticed that once you get the connection created, if you try to edit the settings, an error pops up stating that you are not authorized to do so, before I even get a chance to put in the password. Its not really a big deal, and if it comes down to it you can always delete the connection and start over. However, I have noticed that with the card plugged in, sometimes it can take up to 15 minutes to be recognized as a connection. I got to thinking about it and figured it may have something to do with the fact that this card, and all the cards we carry are seen on windows as a mass storage device. So to test this, i left the card in and rebooted, and of course on reboot, the card was mounted and once i hit eject, it was seen as a modem right away.
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Feb 19, 2010
I use this Thinkpad mostly for work while traveling, and wireless connectivity is not a big issue for me. Battery life is a big issue, however. I've just converted from Mandriva. With that, I was able to disable the wireless adapter so that it did nothing at all on boot - and only started on my instruction. This made a dramatic difference to battery life! How to achieve this in Ubuntu? The file attached gives all the info about my wireless set-up as it stands.
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May 1, 2010
I have an old T30 that has an incompatible wireless card with my network. How can I disable the builtin wireless card while allowing my USB Linksys card to fully function?I can't figure out how to have one run while disabling the other.
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May 5, 2010
I'm currently running two computers running Karmic (one was upgraded from Jaunty), and both are running Samba servers. Before I upgraded from Jaunty, I was running Linpopup for a simple Winpopup program to just send and receive Winpopup messages. Afterwards, it was removed due to a lack of support, so I installed it manually, finding all the required packages on the Ubuntu Package List site.
My current problem is that running Code: smbclient -M [network-name] asks for a password before it will let me enter my message, which means that I have to add my password on the first line of my message in Linpopup. My question is, why do I have to enter a password just to send a Winpopup message between computers and how do I disable this? None of the documentation I've found so far indicates anything about fixing it, let alone that the problem exists.
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