Managing and using network connectivity on a Ubuntu system

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Unable to set default gateway on a hosted Windows virtual server

I'm running Ubuntu server via Hyper-V and have successfully installed it but seem unable to ping the server or ping any other machines on the network from the server. After doing a bit of reading ...
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4answers
2k views

A “tinkered” PC can ping by IP, not by hostname. How to fix?

Like this: root@tis-server:~# ping www.google.com ping: unknown host www.google.com root@tis-server:~# ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. 64 bytes from 8.8.8.8: icmp_req=1 ...
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1answer
449 views

Skipping video and audio with PS3MediaServer

I'm using the latest PS3MediaServer build right from the repos suggested in the Ubuntu Wiki. I'm streaming multiple movies from my server (Ubuntu 10.04 LTS) to my PS3 over wireless. Sometimes, during ...
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1answer
4k views

How to debug slow browsing speed?

I'm using Ubuntu 12.04, Chromium 18.0.1025.151 (Developer Build 130497 Linux) Ubuntu 12.04, Firefox 12.0 but I'm getting poor browsing speed. The browser always shows "Waitng for aaa.bbb.com" at the ...
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6answers
12k views

Why is my Internet connection randomly dropping?

Ever since I have installed 12.04 (clean install not an upgrade), I have been having a drop in the Internet connection. The drop in the connection can be anything from 15 seconds to about 3 mins, and ...
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1answer
122 views

New User to Linux in general (Setting up a hardware firewall, needs interface config and ufw config help!)

I'm very new to this new environment (coming from Windows) and I need some help setting up a hardware firewall and web server combo. I already have my website set up and I would like some guidance on ...
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3answers
16k views

Internet on Ubuntu 12.04 stopped to work after installing updates from the update manager

I have wireless Internet access and it worked well on Ubuntu 12.04 LTS until today, when I installed updates from the Update Manager. After the reloading of the computer the sign of Internet ...
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2answers
6k views

nvidia-settings makes one of my dual monitors grey and useless, disables network

I'm running Ubuntu 12.04 64-bit, Precise Pangolin, with a PNY GTS 250 1GB video card and a monitor plugged into each of the DVI ports. I'm using the proprietary drivers (post-release updates). If I ...
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1answer
236 views

how to connect to two wireless network

I have two hotspot/wireless network at my home, and I have 2 wireless adapter in my laptop, can I connect to 2 wireless network and use both to connect to internet for increasing internet access ...
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3answers
2k views

How to start a task before networking?

I've written an upstart task that modifies /etc/network/interfaces. (Actually a file sourced into it.) Which start on condition do I need to declare to let my task run before any networking jobs? ...
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1answer
4k views

My hardware MAC address is always 00:00:00:00:00:00 until I manually update 'eth0'. How can I fix this? [duplicate]

I am using Ubuntu 12.04. I use a wired connection. My network MAC address shows as 00:00:00:00:00:00. When I enter the commands below into a terminal window, it starts working again. sudo ifconfig ...
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1answer
7k views

How to install Netgear N-300 UAB adapter WNA3100 on Ubuntu 12.04

After a fresh install of Ubuntu 12.04, the first thing I'm trying to do, is to setup my wireless adapter. I can see it using lsusb: beer@beer-linux:~$ lsusb ... Bus 002 Device 006: ID 0846:9020 ...
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3answers
643 views

Ubuntu background network usage

I'm using Ubuntu 12.04, and I'd like to understand the source of background network usage. While I'm not using the network (e.g. reading ebooks or using offline apps), Ubuntu keeps fetching data from ...
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4answers
686 views

xubuntu internet thing says it is connected to internet but everything else says its not

The wireless indicator in the corner says I'm connected but applications like Firefox and the Software Center say I'm not.
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1answer
819 views

VPN disconnected: resolv.conf not refreshed

I connect to VPN using vpnc. When VPN disconnects, either via time out or the session limit is reached, VPN is terminated, but resolve.conf continues to contain references to my VPN network. ...
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2answers
833 views

Why can't I connect to the internet?

When I try to connect to my network with wireless, the network I want to connect to is grayed out. Wired works fine. The network is WPA2, and I am using Ubuntu 12.04 on an IBM Thinkpad T30 with an ...
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1answer
2k views

How to autoconnect to Ethernet network when restarting?

Firstly, I hope this hasn't been covered elsewhere, I have searched but haven't found this particular problem. I updated to 12.04 a while back and though I now thoroughly regret that decision, I'm ...
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2answers
1k views

Computer becomes unreachable on lan after some time

I work on my laptop and ssh into my desktop. I use a lot of key based authentication for many servers for work but recently I couldn't login because ssh would pick up and try all the keys and it stops ...
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1answer
2k views

Bridged Networking with 64 bit Ubuntu 12.04 server as host to a KVM virtualized setup

I saw two other similar posts on this topic but my situation is slightly different. Basically, I need to set up bridged networking that uses static ip (not dhcp) on an Ubuntu 12.04 host running KVM. ...
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1answer
3k views

Configure Multiple Network Cards for ubuntu server [closed]

I have installed ubuntu server 12.04, I intend this to be a headless web cache server. I used the text-based setup wizard to configure the first NIC. I have eth0 set static, now i would like to set ...
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2answers
2k views

How to block Internet for guest account?

How can I block or disable my Ethernet Internet connection, for the guest account only?
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1answer
358 views

Not able to connect to local network

I have installed Kubuntu , I am able to connect to Internet and able to access external sites, but in my local network i have bugzila installed that i am not able to access, even i am not able to ping ...
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1answer
1k views

How do I get a Zte wcdma modem working?

I just installed ubuntu server 12.04. The server detects the modem, but I can't edit mobile broadband settings (to input username and password) in network connections
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3answers
2k views

How do I share a printer? [duplicate]

Possible Duplicate: What is needed for a networked home printer? I want to share my printer on network via ubuntu if I want to connect my computer to printer via USB cable. What should I ...
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0answers
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How can I find my public IP using the terminal? [duplicate]

I am on DHCP, having dynamic IP. Finding your public IP when using a GUI and a browser is extremely easy. Simply go to Google.com and search for "What is my IP". Google will display it in the very ...
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2answers
3k views

Why do none of my local servers resolve?

When I try to ping or browse using a web browser certain domains names that we host on our local network, it does not work. Yet, dig and nslookup correctly return their details. What do I need to do ...
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2answers
1k views

Ubuntu can't download files during update to 12.04 (Failed to fetch)

I have a fail during upgrade from 11.10 to 12.04 (Failed to fetch) I've been trying to update ubuntu from 11.10 to 12.04 for a while (from Update manager). But every time I do the update, after ...
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1answer
2k views

How to prevent WLAN connection from dropping permanently on a Fritz USB WLAN N stick?

I have a desktop with a Fritz USB WLAN N stick and tried Ubuntu 12.04. Installation went fine and WLAN is working. However, connection drops permanent. Reconnecting manually fixes it but after a few ...
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2answers
17k views

ip route with two default gateways

So I have this challenge, and I've searched the internet high and low. Learned a lot - but Im still having some issues regarding my two gateway setup, which I really want to accomplish. I have two ...
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5answers
29k views

Cisco VPN not working

I want to connect to my university's Cisco VPN from home, but it always fails. Today I took my laptop to university to see if the IT guys could help (they couldn't) and it worked there so the ...
1
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1answer
68 views

Store home partition on and authenticate users with central server?

I am planning to roll out a handful of Ubuntu workstations. We have a Debian (samba) fileserver. I would like to offer a hot-desk situation whereby users could go to any of these ubuntu machines, log ...
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2answers
332 views

iptables sharing internet connection with restricted access

I am trying to configure an ubuntu server to share internet access from eth0 to client systems on eth1 however I only want to allow access in/out on port 1688 and also resolve host names while ...
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0answers
47 views

Ubuntu One hangs router sockets [duplicate]

Possible Duplicate: Ubuntu One Limit Concurrent Uploads / Downloads I have Ubuntu One for kde in 12.04 kubuntu. Every time I run it from scratch, e-mail and others stop working properly ...
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1answer
840 views

Huawei E682 modem not working in 12.04

I'm a user of Ubuntu in Kenya, I've a Huawei E682 modem. When I use it in Ubuntu 11.04 it connects without any problems to the Internet. But in Ubuntu 12.04 I can hardly connect to the Internet using ...
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1answer
518 views

STA wireless driver error [duplicate]

Possible Duplicate: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do? I've got this problem installing my wireless driver. Is keeps giving me theis message: ...
4
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0answers
3k views

Ubuntu 12.04 Wireless hotspot: Android stuck on obtaining ip address [closed]

I recently upgraded to 12.04 and was delighted to find a simple button to start a wireless hotspot in Settings > Networks. This is all well and good, however when I try and connect my android device ...
1
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1answer
310 views

Need firmware for my Broadcom 43xx wireless adapter [duplicate]

Possible Duplicate: How do you get the Broadcom BCM4306 wireless card working? Firmware missing for Broadcom 802.11b/g Adapter? Where do I get a wireless firmware (bcm43xx_microcode*.fm) ...
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5answers
11k views

How to detect a mobile device when it connects to a home wifi network?

What would be the best way to have a server recognize when a specific mobile device (cell phone, iPad, etc.) connects to the network (wirelessly, of course)? As an example situation, a person has ...
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1answer
2k views

Ubuntu 12.04 doesn't show wired connection, Windows 7 does [closed]

I have a wired connection in my student dorm room which doesn't come up in network-manager with 12.04. It does work with Windows 7 though, so it's not anything hardware related I would say. On a ...
3
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1answer
2k views

In /var/log/messages, how do you tell if a connection started or finished?

How can one differentiate between the start of a network connect and the end of one, from the logs listed in /var/log/messages? All the logs look identical.
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1answer
110 views

How do I connect to available networks from the command-line?

More accurately, how do I tell Ubuntu to obtain an address using DHCP for all the network interfaces it finds (which do not require a password)?
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1answer
33k views

Can not access Internet (DNS names do not resolve) after update today

I have been using Precise for a few weeks now for work with no problem. Today, I am not able to access any website using either wired or wireless connections. I installed the updates today which ...
0
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1answer
458 views

Why won't my computer connect to wireless?

Why can't I connect to the Internet wirelessly? I confirmed that all of my router information is correct and have tried this several times, but my computer still wont connect to the Internet via my ...
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1answer
2k views

RTL8190 wireless card unclaimed

I have recently installed Ubuntu and I'm having problems with my (RTL8190) card. I followed the steps listed here - Ubuntu Help: Troubleshooting Wireless. After using the command sudo lshw -C ...
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3answers
3k views

DNS sometimes works, but it is very slow.

I am having DNS problems since upgrading to Ubuntu 12.04 (Precise Pangolin) from Ubuntu 10.04 (Lucid Lynx) yesterday. DNS sometimes works, but it is very slow. I have read the blog post DNS in ...
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1answer
717 views

Broadcom NetXtreme BCM5721 Gigabit Ethernet unable to connect to Internet

I installed Ubuntu Server 12.04 on an IBM machine which has a Broadcom NetXtreme BCM5721 Gigabit Ethernet PCI Express card. I was able to connect to the Internet during and after the installation. I ...
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3answers
1k views

Bridged networking in KVM

I'm using ubuntu 10.04 with qemu-kvm installed. I bridged my eth0 to br0. My problem is that The host OS loses connection. Here is my interfaces file auto lo iface lo inet loopback auto eth0 ...
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0answers
699 views

My server cannot be reached from the Outside Internet, but works fine from the Internal Lan [closed]

I retired my old 1998 series Pentium II computer running Ubuntu 7 server and replaced it using Virtual Box on a much faster and newer PC. The only job of this server is to run an old school Mud ...
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2answers
2k views

Wireless shows up and keeps asking for password

I installed ubuntu for the first time (first time ever using linux) i used my friends wireless card to update but when i got home and put in my wireless card it asks me for a password i put in my ...
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2answers
5k views

Using the ZTE MF192 HSPA USB Modem with Network Manager in Ubuntu 12.04LTS

Has anyone been able to use the ZTE MF192 HSPA (Black) modem with Network Manager? If there's a way, please share with the rest of us.