Managing and using network connectivity on a Ubuntu system

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I can't use update manager, access Ubuntu related sites or Launchpad

I turned on my computer today and when I tried to run updates through Update Manager, it would just sit there slowly loading a repository forever. Then I tried to access ubuntuforums.org and it ...
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0answers
21 views

Windows Workgroup issue [duplicate]

Possible Duplicate: Share Ext4 Partition Over Network How to configure my Ubuntu Workstation to be a member of Windows 7 Workgroup ? and How to manage permissions for windows users ...
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0answers
21 views

Wireless issues in 12.04 with Ralink RT3060 card [duplicate]

Possible Duplicate: How do I get a Ralink RT3060 wireless card working? I have a fresh install of Ubuntu 12.04 32 bit on a desktop with an Airlink 101 AWLH5075 PCI wireless card(I think the ...
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2answers
853 views

My wired connection says it's connected, but nothing works. (12.04)

After spending hours trying to get my wired Comcast Internet to work on Ubuntu, I thought I had finally got it to work when I discovered that I needed to set it as a static IP by setting the Ipv4 as ...
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1answer
332 views

LAN port suddenly stopped working

I have Ubuntu 12.04. My LAN port was working well and good till yesterday when I shut down my system. When I wanted to use my laptop today the wired network was not being detected. When the port works ...
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1answer
6k views

remmina server & remmina client

I am a total beginner. I am totally frustrated in partial answers and I am unable to understand and the alphabet soup. The answers just confuse me. The instructions say to do this, but I have no idea ...
2
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1answer
515 views

What is Ubuntu's IP reassembly timeout?

I've been told the IP reassembly timeout is 30 seconds, but I just need some clarification please It'll be great if it was from Ubuntu too, as I need to reference it! Thanks
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1answer
5k views

How do I make network configuration changes permanent? [closed]

I managed to get 12.0.4 Cloud Server with MAAS installed. I have no GUI, and I like it that way I am learning a lot. But now I'm running into several issues. I want to be able to make my IP static ...
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3answers
44k views

KVM Bridged Network Not Working

I just installed KVM on my Ubuntu Server according to this guide : https://help.ubuntu.com/community/KVM/Installation Then prepared a bridged network as shown in here : ...
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1answer
252 views

Speed up local network (not internet)

I have Ubuntu 10.04 Computer specs: i5 16GB Memory 1TB hdd 1 Gigabit onboard network card Asus P8H77MLE Motherboard I have 10 users, logged in at the same time, using the computer as a server / ...
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1answer
382 views

Wireless connection drops then password rejected on 12.04

I'm using an Acer Aspire 7520, with a AR242x / AR542x Wireless Network Adapter with a clean install of 12.04 from disk. On bootup my wireless connection works automatically, for a while. Then after ...
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2answers
1k views

how to activate different wired profiles in Gnome3?

I can't find out how to activate different wired profiles through gnome3 network panel ($ gnome-control-center network); i created these profiles within nm-connection-editor? ...Or is there a way to ...
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2answers
5k views

My Dell Inspiron 1501 wont connect to any network (wireless or wired)

I just recently installed Ubuntu 12.04, replacing windows vista on my Inspiron and it wont connect to the internet by any means. It won't detect any wireless networks and when I try the ethernet cord, ...
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9answers
22k views

Wireless Network in Virtualbox

I just installed my first Ubuntu Server (12.04) instance and immediately ran into the following problems: Running apt-get install or update fails (see below) Running ifconfig produces peculiar IP ...
2
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0answers
795 views

Restart service that manages “Windows share” folders

I connect from Ubuntu 12.04 to a Windows 7 on another computer connected to the LAN using nautilus > File > Connect to server. Most of the time it works fine, but sometimes when I open it and try to ...
2
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1answer
127 views

I have bought a new wireless card and I have the same problem , it connects then it isn't able to browse anything

I can connect with wired connection in my living room but I can't with my wireless card. I'm pretty sure card is ok because I got a new one and driver works fine. I had Ubuntu 12.04 then I downgraded ...
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1answer
416 views

Why does WiFi work with WICD but not Network Manager

So my WiFi can connect with WICD, but not the default KDE network manager. I would like to know why. Do both these applications handle the connection differently? If so what would the difference be? ...
1
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1answer
762 views

Windows network missing from Nautilus after reboot

When I first installed Ubuntu 12.04, my Nautilus browser included a "Browse Network" section which included icons for the two Windows 7 PCs in the household. Since then, nothing has changed on either ...
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2answers
905 views

Linux got IP from DHCP, but still can't connect to WPA2 WIFI

Here I got a problem. I have a Wireless Router which is Buffalo WCR-HP-GN, and I setting a WIFI which use WPA2-PSK authentication and the passphrase encrypted by TKIP. The password is a 9-letter ...
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1answer
1k views

Completely disappeared Wireless

Some days ago after partial upgrade and update my "Ubuntu 12.04 64bit" Wireless disappeared. I googled and tried several solutions such as: 1.BIOS Reset, 2.Re-installing all pacgakes related to ...
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0answers
296 views

Can't Talk Out to The Internet, But Can Connect In and Resolve IP Addresses

Basically this is whats going on, I have an external SSH connection into a system running Ubuntu 12.04 desktop. However I have no external connection from that PC to the internet, to run apt-get or ...
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1answer
1k views

How do I set up Internet connection on Ubuntu 11.10?

I installed Ubuntu 11.10 today. I had installed Ubuntu many a times and uninstalled it again because I couldn't connect to the Internet. I tried configuring the DSL in Ubuntu, but it failed. I ...
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1answer
1k views

why samba share files are not able to access by some user for some time?

I'm running samba on Ubuntu Server 10.04 LTS, I've some folders on samba share and created some user to access it, but suddenly some of the user are not able to access it for a certain time only. For ...
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0answers
962 views

Laptop won't connect to Wi-Fi router

I have Ubuntu in one of the laptops I own. Since yesterday, and for no apparent reason, it is not able to connect anymore to my Wi-Fi router (I tried to forget the network and disabled security, ...
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2answers
7k views

NATTING in Ubuntu Server

My Server has two NIC, One is connected to the Internet Service provider with dhcp ip (dynamically change) given by ISP and other NIC is connected with local Switch with 192.168.1.1 IP. Now I want to ...
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3answers
2k views

Cant connect to wireless network automatically even though the box is checked!

My mum, who lives 400 miles away, has a problem with her wireless network with Ubuntu 12.04, upgraded from 11.04 on her Acer Netbook. The problem is that when she boots up her netbook she has to ...
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0answers
352 views

Minecraft not downloading [duplicate]

I've looked through a ton of pages about this and haven't found any information on the problem i'm experiencing. For information I'm using ubuntu 12.04 32bit desktop edition, fresh install. I ...
2
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1answer
86 views

Ubuntu wireless problem

I have just installed the latest version of Ubuntu on my Toshiba L655. I have never used Linux before this, so I do not know much about it. When I try to connect to my hidden wireless network, I put ...
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1answer
933 views

Why does the common internet stop working when I connect to an OpenVPN server?

I've set up an OpenVPN daemon on an Ubuntu server of mine and as soon as I connect to it from my Ubuntu laptop with a Network Manager plug-in web pages won't open any more (but get ok as soon as I ...
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3answers
918 views

How do I bind each of my server's NIC's to a separate IP?

My question is "How do I bind each of my server's NIC's to a separate IP?" My Ubuntu 12.04 server has two NIC's - both are attached to my home lan. The NIC's have device names that were set in ...
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2answers
1k views

Set up different static IP addresses for different networks

I'm relatively inexperienced with networking, but I know what I want to achieve in this case. I have a computer that I physically move between two separate local networks, but when the computer is on ...
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2answers
739 views

How to configue a DNS server statically?

I am setting up an Ubuntu (12.04) Server with a single statically-configured network interface. Every time I reboot /etc/resolv.conf seems to get reset to empty. Where can I put my DNS server address? ...
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3answers
14k views

How do I completely reset network settings?

When I first installed Ubuntu, all networking worked perfectly. After messing with the settings every so often, it slowly became unusable. I would really like to know if there is a way to completely ...
2
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1answer
370 views

DNS issues with 12.04, apt-get, and openssh

On a fresh Ubuntu 12.04 installation, we noticed that we were having issues with openssh as it was constantly breaking the connection randomly after a period of time. After doing some debugging, we ...
2
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1answer
1k views

12.04 drops Wired Network if Wireless connects

This is a little different then most of the questions I have seen here. When I am at my office I keep my Lenovo Thinkpad t61p running Ubuntu 12.04 x64 connected via wired Ethernet. I also typically ...
0
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1answer
628 views

Cannot connect to internet with ubuntu 11.10 wired connection

I installed Ubuntu 11.10 on my Dell Optiplex 745 today. I could not connect to the internet with the LiveCD, but I installed it anyway. It still doesn't work. This is the first time linux has been ...
1
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1answer
648 views

Force real network usage - disable loopback interface for applications

I am trying to test some network properties with a (partially self written) tool chain. As I would like to use one device with two WLAN adapters / interfaces, I have to prevent communication over the ...
0
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2answers
921 views

How to set up simple static Ethernet connection?

System A has Wi-Fi Internet access and an Ethernet port, while System B has just an Ethernet port. I connected the ports directly to each other. Both are fairly modern desktop PCs running Ubuntu ...
3
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1answer
394 views

How to prevent NetworkManager from taking control of a specific network interface?

I want to set up a mesh network using batman-adv, but NetworkManager keeps taking control of the second adapter... I need to be able to selectively tell NetworkManager not to manage one specific ...
0
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1answer
2k views

How to update ubuntu 12.04 through squid proxy server at my university?

I wish to update the local package index with the latest changes made in repositories and am using following command : sudo apt-get update On executing this command I get several error messages ...
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1answer
149 views

vidalia fails to anonymize despite showing green onion

Here's what I have done: sudo apt-get install vidalia and it has been installed after that I've set the proxy settings in network to localhost:8118 and applied it system wide; however, when I want ...
3
votes
1answer
3k views

Wireshark - allow non-root user to sniff USB traffic

I'm trying to capture data transferred across a USB connection to reverse-engineer the protocol used. I'm using wireshark to do this, which explicitly warns against running as root. So far, I've ...
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2answers
6k views

Problem connecting to wirless internet - computer will not boot with networking unless ethernet cable is connected

Ubuntu server 12.04, fully updated, with lxde installed... I have a problem with my wireless connection and don't know how to solve it. I can't get any networking at all unless I plug the ethernet ...
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3answers
2k views

aircrack-ng channel problem under 12.04 LTS

I would like to test security of my home wireless network, but I have lot of troubles with aircrack-ng. I am using 12.04 LTS, linux-3.2.0-27-generic-pae. My wireless card is BCM4311 (14e4:4311). ...
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1answer
5k views

I can Ping, Dig, but I can't browse [closed]

I've searched for 5 days on the Internet for a solution to my problem, and I already did almost everything, and I still have no positive results. I installed 12.04 LTS in VirtualBox. I'm using ...
4
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0answers
464 views

Asking for a SSTP connecting configuration file for using SSTP command line [closed]

Using sstp with Network Manager and DNScrypt stopped working on Ubuntu 12.04 DNSCrypt and Network manager and using Unblockvpn's SSTP - http://sourceforge.net/projects/sstp-client/ Connects the ...
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1answer
2k views

What does the asterisk in the netstat output mean?

# netstat -at Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 localhost:30037 *:* ...
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1answer
4k views

Server Won't Ping Outside Network

I just installed Server 12.04 onto a spare desktop. Everything is working good except when I try to ssh using my external ip address. My /ect/network/interfaces file: # The loopback network ...
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1answer
443 views

I don't know how to configure usb modem for huawei 3g mobile network of cat cdma

Please help me someone who know how to configure it: CAT CDMA, HUAWEI C880/EVDO 3G Network:USB Modem I don't know how to configure to connect it. Please help me if someone who know about it.
0
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1answer
56 views

How to use deviantart on ubuntu?

I have ubuntu, and I'm trying to chat like I normally do on deviantart, with more than one chat open at once. However, I cannot use tab normally (the tab button makes the cursor vanish rather than ...