Managing and using network connectivity on a Ubuntu system

learn more… | top users | synonyms (1)

2
votes
1answer
1k views

Ubuntu 12.04 under VB 4.1.14 — ping resolves domain, but wget fails

With a vanilla install of Ubuntu 12.04 on a vanilla install of Virtual Box with NAT on VB, my network settings seem to function incorrectly. What baffles me is that I can ping www.google.com, but I ...
3
votes
0answers
2k views

Wireless on an Acer Aspire 1810T with an Intel 5100AGN works for less than a day, then stops working until reboot [closed]

I am running Ubuntu 12.04 on an Acer Aspire 1810t with an Intel 5100 AGN wifi card that has performed flawlessly on Ubuntu 10.04. I assumed the stellar wireless support would continue with 12.04 but ...
1
vote
1answer
246 views

Why doesn't networking work after upgrade from 11.10 to 12.04?

After the upgrade to 12.04, networking is down. I can ping my router, but that's it. (This is a wired connection, not wi-fi). Manually running /etc/init.d/networking restart does not help. I ...
0
votes
1answer
2k views

Can't find wireless networks - Netgear WN311B, 12.04

I'm using a Netgear WN311B PCI wireless adapter on my desktop. The device works without problems under Windows (dual boot). I have enabled the Broadcom STA wireless drivers in "Additional Drivers". ...
1
vote
1answer
179 views

upgraded - now network not connected

Recent convert to Ubuntu after teaching Comp Sci using windows. Two machines connecting through ADSL modem. Just upgraded the Toshiba A100 laptop to 12.04 and now it says network not connected. My ...
2
votes
1answer
5k views

Printer not visible over network between 12.04 machines, Printer properties reports “Not published. See server settings”

I'm attempting to share a USB attached printer connected to one 12.04 machine to another 12.04 machine (and a 10.04 machine) on the same network. The printer does not show up and cannot be found as a ...
0
votes
1answer
1k views

Ubuntu server on LAN but can't get to internet when other pc's can

I have spent over 32 hours tyring to solve this problem. My ubuntu 10.04.4 server has postfix/dovecot etc and has been running fine up until 5/3/2012. My symptoms are I can SSH to the server ...
0
votes
2answers
1k views

How do I get internet access in my kubuntu 12.04 virtual machine using NAT and a wireless connection?

I use virtualbox 4.1.14 directly from the developers including the extension (not the ppa) on an ubuntu 11.10 system. I try to access the internet from the kubuntu live cd that I have booted inside ...
1
vote
1answer
446 views

how to permanently turn off wired network in ubuntu 12.04

I'm using Ubuntu 12.04 64 bits with wireless. But every time the computer starts up it is trying to connect to wired network, even if I'm already connected to wireless every 10 of 15 minutes it is ...
0
votes
1answer
415 views

After running 12.04 from Live USB, Windows 7 installation cannot load network drivers

So basically yesterday I downloaded the 12.04, And I created a Live USB, And booted it on my Laptop. Everything was great, Everything worked. Then I needed to do something on windows, And when I ...
0
votes
2answers
2k views

Artheros AR9287 Txpower

I'm using Ubuntu 12.04 LTS on my Aspire 3820TG which comes with an Artheros AR9287. Somehow the Wireless performance is to put it mildly sub-optimal. I thought it might have something to do with the ...
0
votes
3answers
3k views

Packet loss with Ubuntu 11.10

I have a machine with Windows 7 and Ubuntu 11.10 In Ubuntu I have about 30% packet loss when I make pings either to my router gateway or to an external site such as google.com, so my internet ...
0
votes
1answer
2k views

lshw not showing network

Output: {User}@{Computer}:~$ sudo lshw -class network {User}@{Computer}:~$ Another Test: {User}@{Computer}:~$ lspci 00:00.0 RAM memory: NVIDIA Corporation MCP61 Memory Controller (rev a1) 00:01.0 ...
4
votes
2answers
8k views

Route all traffic through SSH tunnel or equivalent? [duplicate]

Possible Duplicate: How do I route my internet through a SSH tunnel? I just got a new laptop and put Ubuntu on it as a good way to force myself to learn Linux. This laptop will be going ...
0
votes
1answer
377 views

How do I blacklist a hardware item before reboot through the Wubi Win interface?

specifically I need to blacklist b43 broadcom adapter so my installation will stop crashing, but the accessibility button on the windows portion of the setup does not do what it does from a live cd ...
2
votes
1answer
454 views

DHCP server doesn't assign network dns to other hosts on my network

I had a problem with my DHCP but I managed to fix it. Now the network starts but I have a problem with DNS. Clients in the network don't get any dns from my DHCP. My network works as follow my I ...
6
votes
1answer
9k views

SSH into Ubuntu VM remotely

I dont have much experience on networking or linux, but I'm trying to ssh into an Ubuntu virtual machine from outside my home network. The Ubuntu virtual machine (VirtualBox) is running an a Debian ...
1
vote
1answer
147 views

system monitor shows downloading while lsof -i says nothing downloading

when i checked system monitor it says there is something downloading but lsof -i showing nothing. http://i47.tinypic.com/1zqadm9.png my ISP provider allows me to connect to a single host at a time. ...
3
votes
0answers
809 views

How can I tell Ubuntu to keep the correct routing table?

Ubuntu sets a wrong routing table if the router is switched off and on again: Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 ...
1
vote
2answers
2k views

IP address change won't take effect

I use static IP adresses. When changing the IP of a network interface (eth0 or wlan0) the settings are saved to the network connections but when running ifconfig or looking at Network Settings, ...
0
votes
1answer
150 views

Should I ever worry about router compatibility?

Assume I'm getting a new router. I've never heard of any problems like this, but is there reason to fear some routers might not work well with Ubuntu? If so, which types?
1
vote
2answers
7k views

Wired Connection Problem on a Lenovo Workstation e20

After upgrading to 12.04 my interent connection no longer works. More precisely it is really, really, slow, and occasionally will connect, but do so only for a few moments and then disappear again. I ...
11
votes
7answers
25k views

Restarted computer during update; “the system network service is not compatible with this version”

Yesterday I upgraded my Ubuntu by SSH but before I finished it, I restarted my computer. I know that was not very smart. Anyway now I don't have internet connection, the WiFi or Ethernet is not ...
1
vote
1answer
1k views

Unable to access network. How do I install the wi-fi drivers for my laptop?

I'm typing this with a laptop containing windows 7 in the hard drive, but I use my 500gb hard drive with ubuntu 12.04LTS on it as well. I can't seem to connect to the internet through ethernet due ...
1
vote
3answers
6k views

Ubuntu Software Center 12.04 does not install software

I am new to Ubuntu, and I have just installed Ubuntu 12.04 on a computer. I am using an automatic proxy server. When I select a software package to install and input my password, the progress icon ...
1
vote
0answers
119 views

Internet Data Card slow in Ubuntu 11.10 [closed]

I am using a MTS data card which promises up to 3.1 mbps, but it gives me only 0-4 kbps. Is this an Ubuntu problem?
4
votes
2answers
3k views

Atheros AR8152 ethernet connection not recognized

tried a lot of different answers people gave around the web... none of them worked I get wireless internet and all.... but whenever I tried going wired it doesn't even recognise the option of a ...
2
votes
1answer
4k views

Is PPTP a secure VPN-protocol?

I will be setting up a VPN on my home server and in tutorials I've read it says that the protocol can only be used with passwords, not key-files. To me this doesn't seem very secure so I was wondering ...
8
votes
11answers
53k views

Wireless is disabled by hardware switch on Dell Inspiron 1750

I have a problem where Ubuntu (12.04) says there is a wireless network card, but it is disabled by a hardware switch. How do I turn it on? I checked the BIOS, and the wireless card is enabled there. ...
7
votes
1answer
2k views

How to set an NFS network?

I want to merge information found here and there in order to record in one answer all steps to set my NFS network between my two Ubuntu PCs This is useful time to time, for example when switching to ...
16
votes
4answers
26k views

resolv.conf doesn't get set on reboot when networking is configured for static ip

I'm experiencing what appears to be a name resolution issue in Ubuntu 12.04 Server edition when configuring my computer to use static ip. In /etc/network/interfaces: # The primary network interface ...
0
votes
1answer
2k views

How to set up wired network?

I have cable network connection, so plz tel me how to setup wired network in Ubuntu? I mean Where to put what IP address, IP4 setting etc,Thanks.
1
vote
0answers
496 views

Why can't I access a directory on another device if it has more than around 500 files? [closed]

I am having an issue with Ubuntu Natty (32 bit version) trying to access a directory on a FreeNAS server (set up to share files using samba) that is also on the local network. It seems that if there ...
2
votes
1answer
8k views

Network authentication not working

I just installed Ubuntu 12.04 and Im trying to connect it to my NAS. It connects fine to folders where there are not authentication needed. However, if I try to open a password protected folder it ...
0
votes
2answers
18k views

How to setup wired network connection in Ubuntu?

I just installed Ubuntu, I cant get that how to set network connection, I don't have lancard driver for Ubuntu, help plz
2
votes
3answers
12k views

Ethernet conection not working Atheros AR8152 OS 12.04

I have instaled Ubuntu 12.04 but my network conection doesn't work and i know it's becouse of the drivers I've run $ lspci | grep Ethernet and this is the result 02:00.0 Ethernet controller: ...
0
votes
1answer
342 views

Using two internet connections

Sometimes I work in place where I have free wifi, but it requires proxy - and it work only for http(s). In my work I need ssh sometimes. I bought a G4 card, but it has transfer limit so I would like ...
7
votes
2answers
4k views

Distribution upgrade frozen at “flashplugin-installer: downloading http…”

I have just started to upgrade from ubuntu 11.10 to 12.04, which I was at the library for... And when it got to 10mins remaining on "installing the upgrades" and the library closed, and now the ...
0
votes
1answer
1k views

Can't access our Buffalo Network attached storage device

I get a box asking for the user name and password, which I correctly supply, but it won't accept them. I just verified that the user name and password work on an old 10.04 machine.
3
votes
5answers
17k views

Ethernet connectivity problems after upgrading to Ubuntu 12.04LTS

I tried upgrading once more to 12.04 after it went live. I had tried both Beta 1 and Beta 2. The problem is that now I'm getting sporadic network connectivity. My computer is hooked up straight to ...
0
votes
0answers
419 views

broadcom 4311 wont work on 12.04 [duplicate]

Possible Duplicate: Wireless doesn't work on a Broadcom BCM4312 I just finished installing Linux Ubuntu 12.04 on my presario laptop and the Broadcom 4311 (REV 02) Wireless chip is not ...
4
votes
8answers
22k views

12.04 wired network doesn't work RTL8111/8168B

its a fresh 12.04 install 64bits. wifi works fine, wired stays off with cable connected and network-manager shows as if cable is disconnected. Turning off networking lights up my network-cards leds, ...
0
votes
1answer
604 views

Network problem in 12.04

I am trying to install Ubuntu 12.04 but when I run installer (or LiveCD) it writes that there is no connection to Internet (I don`t continue installation because ubuntu is the only OS on my pc and I ...
4
votes
2answers
1k views

How to access second disk locally and over LAN

I have just added a second 1TB HD to my Ubuntu box and I can see it listed when I run blkid. But how do I reference it so I can use it as local storage share it on my LAN
0
votes
1answer
331 views

Is there any application like Proxyfire?

In Windows7 I using Proxyfire to pass through the internet filtering. Now I am using Ubuntu and I looked everywhere and read many posts but still cant find any easy app. Can anyone help me? By ...
0
votes
2answers
439 views

Internet doesn't work by default

After upgrading to Precise, I am required to run 'sudo dhclient eth0' in a terminal in order to get the internet to work. Everything worked perfectly fine on Oneiric, so It's really puzzling me. I'm ...
0
votes
3answers
7k views

12.04, mapping network drive from windows server 2003

I'm trying to map a network drive running on a windows server.. I tried using the Connect to Server GUI but didn't get anywhere so I tried mounting it in the terminal but have had little success. ...
0
votes
1answer
74 views

How retrieve files in a minimal ubuntu installation? aka how apt-get retrieves files?

I'm running pbuilder, which setup a minimal ubuntu installation, and I'd like to retrieve some files without «wget» (it's not installed by default), since apt-get can retrieve .deb files I imagine ...
2
votes
1answer
484 views

How to install a new D-Link NIC in Ubuntu 11.04 Server?

I did a new fresh installation of Ubuntu 11.04 server. I plugged a new D-Link NIC (DFE528TX) but it doesn't work properly. How could I fix this problem?
2
votes
1answer
24k views

Is it possible to use Ifconfig to switch an interface to DHCP and if not, what is the best way?

I have just set up a new Ubuntu server and I am going to be doing a lot of networking tests. During setup, I simply skipped the network step. I now need to switch between DHCP and an address quite ...