Managing and using network connectivity on a Ubuntu system

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1answer
512 views

unable to connect to broadband connection with two LAN card

I have installed Ubuntu on my system, which has two LAN card. One of the LAN card is not working. But the other do work. I have tried configuring the internet connection but failed.
3
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1answer
3k views

Wireless driver not detected

When typing iwconfig I only get "no wireless extensions" How do I get the Ubuntu wireless driver to be detected? lspci: 00:00.0 Host bridge: ATI Technologies Inc RS690 Host Bridge 00:01.0 PCI ...
2
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1answer
748 views

How can I keep Ubuntu from dropping my network connection when it goes to sleep/hibernate mode?

I have my computer running a Minecraft server as well as sshd (so I can sign in and check on things), but if I leave my computer on for about a day it goes into sleep then eventually hibernation mode ...
2
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2answers
1k views

How to protect a computer name from being disclosed to network peers?

I'd prefer my hostname to be hidden (or a fake hostname to be shown - both variants are interesting actually) from my network peers (including routers ad DHCP servers). I believe my IP and MAC ...
15
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6answers
37k views

resolv.conf keeps getting reset by something

I need help figuring out why my resolv.conf keeps changing to this, causing me to not be able to access the outside internet and only the local network: $ cat /etc/resolv.conf nameserver 192.168.16.1 ...
2
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3answers
6k views

How do I get an Atheros AR9285 working?

I've just decided to jump into the world of Ubuntu, so far I encountered no problems until I tried to connect to my wireless network. I'm running Ubuntu on my laptop, Acer Aspire 5333-2880, which has ...
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0answers
1k views

Computer won't connect to Internet using Ethernet cable [closed]

I'm new to Ubuntu Linux. I have a Sony Vaio computer and am trying to get it connected to the Internet using an Ethernet cable. I'm able to connect a windows machine to the Internet using this cable, ...
1
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1answer
474 views

OpenVPN conflicts with 3G mobile broadband

I'm using ubuntu 11.04 2.6.38-8-generic fresh install. The usb 3G dongle (Onda MT833UP) is recognised by the networkmanager and works fine until I install the openvpn client (sudo apt-get install ...
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1answer
2k views

How do I add a dyndns alias to my Iptables?

First of all: I'm aware of this old question: iptables allow dyndns domain name and auto update rules But somehow it doesn't help me. The Problem Iptables on my work pc are configured to drop all ...
2
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3answers
6k views

Can Ubuntu act as a Domain Controller for multiple OSes?

I would like to install Ubuntu server at my church to start testing a few options (to eliminate Microsoft usage). Some PCs use Windows XP, and some use Ubuntu. I would like the Ubuntu server to be a ...
6
votes
1answer
16k views

Connect Ubuntu to other PC with direct (crossover) cable

Ubuntu 11.04 (PC-1) is connected to PC-2 (Windows XP) with LAN cable (crossover direct cable) Internet access is through USB wireless modem accessing router in separate room If I boot in Windows 7 ...
6
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2answers
15k views

How Can I Roll Back a Kernel Update?

An update for Ubuntu was available today and it installed the generic kernel 2.6.38.11.26. After doing so networking is no longer functioning correctly. My Acer Aspire 4520 has an Nvidia Network card ...
3
votes
2answers
1k views

Server, gui, then uninstalling the gui

I'm planning to turn my old PowerPC G4 into a wordpress website. I'd like to use the server edition of ubuntu 10.04, install a GUI (to set up wordpress) then uninstall the gui. Would I be able to do ...
0
votes
1answer
3k views

How can I troubleshoot a failed local network VNC connection?

On Machine A, I start Remmina (0.9.3) and create a VNC Incoming Connection profile. I picked port 5900, with a username and password. No changes under advanced or SSH. I start the profile and it says ...
3
votes
0answers
557 views

USB Tethering (over USB) with Android 2.2 not working [closed]

It's working with Maverick, but it breaks with Natty. OS detect device, network-manager tries to connect (1), but fails (2): Output of dmesg, lshw, lsusb, lspci, nm-tool, ifconfig and lsmod on ...
1
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2answers
494 views

Transmission causes network drop in Ubuntu 11.04 [closed]

I am running Ubuntu 11.04 on an ASUS eeePC netbook. I've noticed that when I am downloading using the latest (as of Aug 17) Transmission, my network completely drops (I cannot ping the gateway, all ...
0
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0answers
313 views

Why is the network indicator saying “device not managed” when running Ubuntu in VirtualBox? [duplicate]

Possible Duplicate: network manager says “wired device not managed” I have just setup Ubuntu 11.04 on Virtual Box OSE. I notice that my network (or all indicators) applet is not ...
2
votes
1answer
288 views

Can I install server edition alongside/after a desktop installation?

If I install ubuntu, can I install the server afterwards? Like, I install ubuntu on one partition then use apt-get or something similar to get the server?
4
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1answer
14k views

How can I cluster two machines to double the processing power?

If I had two computers running ubuntu server (or just one) could I "hook" the two machines together to double processing power? How would that work?
1
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2answers
2k views

How do I set up Aqemu / kvm tap device?

I'm trying to use Aqemu and I'm trying to figure out how to just have the network in the virtual machine connected to a tap device on the real machine. How do I set this up? Do I need to make the tap ...
0
votes
1answer
839 views

Printing to a printer attached to a network USB hub

I have this device. It is connected to my router and allows the Windows PCs in my house to use printers, USB speakers, external HDs, etc... that are plugged into it as though they were plugged into ...
2
votes
1answer
1k views

Internet over Ethernet: DNS works, internet doesn't (Windows works, Linux doesn't)

I have a PC connected to the Internet using an Ethernet connection. Using Ubuntu I am able to resolve domains using nslookup, but if I try to open an internet page, or use wget it doesn't work. I ...
6
votes
2answers
666 views

How do I access machines on the home network with their machine name?

I have all machines connecting to the internet through a wireless router (occasionally I plug a machine into the router via cable). I have installed the ssh package and can access one Ubuntu machine ...
2
votes
2answers
182 views

Synchronising data between differently sized, and intermittently connected, devices

I am trying to find a solution to sharing my /home directories between my home computers. I have one desktop, with a 1TB disk, and a laptop with a 500GB disk. I also have a home server, which has a ...
5
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3answers
19k views

dhcpd fails to start on eth1

I'm having trouble configuring and starting ISC DHCP server on my machine. I'm running Ubuntu 11.10 desktop edition. I installed ISC DHCP by running $ sudo apt-get install dhcp3-server My machine ...
2
votes
3answers
4k views

ethernet disconnected, shows up in ifconfig

I am running 11.04, no remix. After installation, I could use wireless networks, but not ethernet. When I click on the connections menu item, it says Wired Network disconnected How do I fix this? ...
2
votes
1answer
76 views

Can I set-up a shared network during install?

I'm in the process of installing Ubuntu Server, though the computer has no wifi-card. Our router is in a different room, and I don't have money for a wifi-card right now. So, until I get a card, I was ...
3
votes
2answers
187 views

How do I provide wired connections with internet while leeching off of a wireless network?

I want to connect a desktop pc to my laptop and use the wireless ability of my laptop to give my desktop internet.
2
votes
1answer
418 views

Wired Network Does not Connect on first Boot

I am having a problem with one of my desktop computers not connecting to the wired network when I first turn it on in the morning. After a restart, the wired network works fine. Any suggestions I ...
1
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0answers
370 views

gnome-file-share-properties doesn't work [closed]

I've configured gnome-file-share-properties on all my Ubuntu's PC for sharing the directory Public to each other. I following some guide found on Internet for the configuration of it, all explain the ...
1
vote
1answer
918 views

How can I adjust internet settings such as TTL, Rwin, and Max Connections?

Is it possible to adjust settings such as TTL, Rwin, and Max Connections on Ubuntu? I am having connectivity issues on Ubuntu with my wireless card. I experience the same issue on Windows XP, at least ...
2
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0answers
8k views

Wired network disconnected by NetworkManager - how to fix? [closed]

Ubuntu 11.04, classic desktop. Hardware is working fine, and network was working previously, but after changing my location (and rebooting the machine), Ubuntu just says 'Wired Network Disconnected'. ...
2
votes
2answers
7k views

Configuring Cisco VPN Anyconnect to use VPN and the local network simultaneously

I want to use VPN and LAN access simultaneously (using local printers, SMB shares, ...) Theoretically the task should be easy: All local IP's targets (192.*) should go directly to eth0, the rest to ...
8
votes
3answers
11k views

How to find which WiFi frequencies are being used the most near by?

We have a lot of WiFi connections nearby and I'd like to know which band has the least interference. I'd like to to know how many connections are on each band and pick the best to configure my router ...
0
votes
1answer
456 views

Does the Linksys Secure Easy Setup (SES) button work with Ubuntu?

Does the Linksys Secure Easy Setup (SES) button work with Ubuntu? I'm housesitting for someone tonight, and when I asked what their wireless password was, they told me about the SES button they press ...
9
votes
10answers
5k views

Can't browse the internet nor ping a host, but dig works

I am not able to browse any websites. Please take a look at the following error: karthick@karthick:~$ ping www.google.com ping: unknown host www.google.com Update ...
2
votes
1answer
936 views

how to mount my d-link dns 323 NAS

I have ubuntu 11.04 64bit. I cant connect my dns 323 "NAS". I only see the ip "169.254.6.199" on my router. I use Nautilus "smb://169.254.6.199" and only see message "could not display ...
1
vote
1answer
586 views

can't find wireless networks

every time i go out of sleep mode ubuntu is disconnected from the internet, which i get, but when i go to reconnect to my router, it can't find any wireless networks at all and it says "device not ...
3
votes
2answers
1k views

Need to manually enable wireless networking on a Centrino N 6200

When I run Ubuntu automatic connected to wireless network but cannot connect to Internet till I do Disable then enable networking, Please I need solution for this issue, Help. I get this output when ...
0
votes
1answer
177 views

Newbie questions for ubuntu server setup? [closed]

I am new to ubuntu. I am testing it using virtual machine. I have installed 2 ubuntu 10.04, and i want to make 1 act as server and the other as a client. My questions: How do I add an additional ...
7
votes
3answers
2k views

How do I turn off WLAN automatically when LAN is connected?

I use my Thinkpad laptop with a docking station. The docking station is connected to my router via LAN. When I walk around the house I use my laptop with WLAN. Is it possible (and how) to manage ...
0
votes
2answers
939 views

The network setting in VirtualBox OSE (Ubuntu server on Ubuntu)

Ubuntu server (natty) is running on my Ubuntu (natty) by VirtualBox OSE, How to only I can access my server NOT every internal IP in my LAN and both can access the internet. now I sharing the Internet ...
1
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2answers
391 views

No internet connection even if it reports auto ethernet connection established

My internet connection on my ubuntu laptop was just working yesterday. I don't recalling doing anything drastic that could affect networking settings. However, I am now unable to connect to the ...
1
vote
0answers
232 views

Everything Unity & Gnome gets reset on reboot / logoff / shutdown [closed]

Really odd issue here, Whenever I log out, Ubuntu looses all settings for the launcher preferences - I get the defaults again, that is, from the top - Home, Firefox, Libreoffice Writer, Calc and ...
1
vote
1answer
810 views

WICD works fine, command line fails [closed]

Connecting to the internet using Wicd and Networkmanager works just fine, but through the command-line i get the next error: # ifconfig eth1 down # dhclient -r eth1 # ifconfig eth1 up # iwconfig ...
0
votes
1answer
2k views

how do you mount network drives?

When I access a network folder using nautilus it shows up in the Places sidebar, but not in any other application's save/open Places sidebar. Why the inconsistency, and how can I add a share so every ...
1
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2answers
3k views

Resolvconf -u gives the error “resolvconf: Error: /etc/resolv.conf must be a symlink”

I use resolvconf to have static DNS servers set in /etc/resolv.conf. However, when I run sudo resolvconf -u to update /etc/resolv.conf with new static information, I get the error 'resolvconf: Error: ...
4
votes
0answers
36k views

Need software like 'Internet Download Manager' [duplicate]

Possible Duplicate: Can someone recommend a download manager? Is there any software in Ubuntu like "Internet Download Manager" that downloads audio, video, documents, and software with ...
3
votes
1answer
436 views

IPv4 address to Netmask mapping and Multiple default routes feasibility?

We have, Class Range NetMask Bits Bits hosts# ---------------------------------------------------------- A 0-127 255.0.0.0 8 24 16777216 (i.e. ...
0
votes
1answer
289 views

how to configure network Authentication?

i would like to configure network authentication can any one help me to configue ldap,ACL,kerberos step by step