Managing and using network connectivity on a Ubuntu system

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5
votes
7answers
16k views

Internet very slow in Ubuntu

I have ubuntu 11.04 as the os, both surfing the net and downloading stuff is a pain, it is really slow. I have turned ipv6 off, my connection is properly configured, but still it is very slow. I ...
10
votes
5answers
11k views

Why does Skype suddenly fail to log in? Turns out, it's tor!

I am not sure if I'm looking at a network problem or a bug here. Since the update to 4.2.0.11 my Skype can't connect any more. My room-mate has the same problem. We're both on Ubuntu Raring Ringtail ...
9
votes
2answers
5k views

Connecting to VPN prevents access to normal web sites

I have Ubuntu 10.04 installed with OpenVPN, and when I connect to a VPN, http access to non VPN sites stops working, until I close the VPN connection. To be more specific, both Chrome and Firefox stop ...
10
votes
2answers
7k views

How to disable/enable automatically connecting to WiFi?

Whenever I restart my WiFi router, Ubuntu tries to connect to my neighbours' WiFi networks. There's over 30 wireless networks in the area. Ubuntu prompts me for the password to all of those. This is ...
7
votes
4answers
1k views

How to reach a host in the same network by hostname?

I have a network which connects a couple of hosts. I would like to be able to reach other hosts from one of them using the hostname. I just discovered the ".local" domain, which is available through ...
4
votes
2answers
8k views

AR9285 Wifi on Lenovo z570 not enabled

Help please. Installed ubuntu 11.10 32bit on lenovo ideapad z570. When choosing Network Manager > Enable Wireless nothing happens. WiFi not enabling Tried the response of Wireless problems with ...
3
votes
2answers
10k views

how to install Wifi and Bluetooth drivers in ubuntu 12.04 lts

I am using HP Pavilion 15 -no11tu which has been awarded the status of Enabled for Ubuntu. When Ubuntu was shipped with my hp laptop,Everything worked fine including WiFi,webcam and Bluetooth. Some ...
3
votes
7answers
12k views

WI-FI doesn't work (Hard Blocked)

Yesterday I installed Ubuntu 12.04 for the first time (I've always been a Windows user) as I was at the office and I had the Ethernet connected. At home I only use WI-FI. When I started Ubuntu it ...
2
votes
2answers
1k views

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 ...
5
votes
8answers
53k views

How do I set up an MTS MBlaze modem?

I have a new MTS MBlaze Broadband modem USB and it is not getting detected in my Ubuntu 10. 04. It is getting detected as an USB but not as MODEM as result I am not able to create a MOBILE BROADBAND ...
0
votes
1answer
2k views

Ubuntu 12.04 Dell 6400 no network

I have just installed Ubuntu 12.04. My network is not working: no wireless, no cable network. There are some posts on forums about it, however I was not able to fix it. It is possible to turn off ...
35
votes
13answers
73k views

List all MAC addresses and their associated IPs in my local network(LAN)

How can I list all MAC addresses and their associated IPs of the machines connected to my local network(LAN)? Any suggestions?
32
votes
12answers
33k views

How can I capture network traffic of a single process?

I would like to examine the network traffic being handled by a single process, but simple network captures won't work since I am dealing with such a busy system (lots of other traffic happening at the ...
18
votes
1answer
21k views

Wireless networking not working after resume in Ubuntu 14.04

[Update]: The same problem exists in Kubuntu and is solved in the same manner. [Solved]: By applying the following command nmcli nm I got the following: Before suspend RUNNING STATE ...
16
votes
1answer
26k views

Where to set proxy ignore list?

I upgraded to ubuntu 11.10 from 11.04, shocked to see few things... My system is behind a proxy, so I did set a proxy setting. Being a web developer, I want to remove a lot of addresses that I type ...
18
votes
2answers
18k views

Send messages between 2 Ubuntu PCs (Net Send Style)

I am trying to find a way to send a message (like a popup message) from 1 PC to another. both are using Ubuntu. Already tried the smbclient way but this only works between a linux PC to a windows PC. ...
23
votes
4answers
63k views

“waiting for network configuration” Problem

This problem happens sometimes when ubuntu starts up. You can't really boot to the interface sometimes. Splash Screen with the 5 dots and a message saying: waiting for network configuration ...
13
votes
2answers
14k views

How to set up dual wired and wireless connections?

My laptop has both wireless and a wired connection capabilities. Can I connect to a router A using wireless and a separate router B using wired ethernet at the same time without having to switch back ...
6
votes
3answers
1k views

2 internet connections on a single PC

If I have a wireless and a usb internet connection on my Ubuntu 12.04 as in: At the moment, Ubuntu seems to only make use of the Wired connection which is the usb connection. Is it possible to get ...
5
votes
1answer
30k 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 ...
13
votes
5answers
26k views

How to network two Ubuntu computers using ethernet (without a router)?

How can I network two Ubuntu computers, so that they can "see" each other at an IP address?
6
votes
9answers
40k views

Wireless shows up as disabled, how can I get it working?

$ sudo iwconfig lo no wireless extensions. eth0 no wireless extensions. wlan0 IEEE 802.11bg ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm ...
7
votes
2answers
8k views

How can I enable wake-on-lan permanently?

I want to enable wake-on-lan for my network cards, for always. The community guide recommends adding the relevant command to /etc/interfaces. In past experiences editing Ubuntu conf files, it's ...
5
votes
2answers
3k views

timeout errors in apt-get update/install

I'm trying to do an apt-get update or apt-get install xyz and I'm seeing timeouts like this: W: Failed to fetch http://eu-west-1.ec2.archive.ubuntu.com/ubuntu/dists/oneiric-updates/Release.gpg ...
3
votes
3answers
10k views

Broadcom BCM4401-B0 100Base-TX Issues

I installed Ubuntu 10.10 on my Dell Inspiron 1521 and the LAN/Ethernet card was working perfectly but Ubuntu was displaying a message about not installing the Wireless drivers because it was ...
3
votes
2answers
5k views

How to connect to the Internet (DSL) automatically at startup?

I also have to enter a password to connect. Not the root password, but a password I created for the DSL connection when installing Ubuntu. So I would like to get rid of the password and connect ...
63
votes
0answers
87k views

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 ...
6
votes
1answer
3k views

How do I set up a network installation?

I want to know if the official 700MB installation images can be used to do a network installation. What would be the easiest way to do it?
5
votes
1answer
1k views

While using internet on ubuntu, all other computers get bad internet connection

I am currently using Ubuntu 10.04 Precise (in dual boot with Windows 7). Whenever I log onto Ubuntu Internet, all other computers Internet speeds plummet. Usually we have 20 Mbps download and 2 ...
2
votes
1answer
5k views

No wired or wireless networking available on Ubuntu 12.04 (wired work from LiveUSB)

I've just installed 12.04 in a dual boot with Vista via a LiveUSB. When I booted to the LiveUSB wired networking worked out of the box, and wireless networking didn't work. Now that I've installed ...
2
votes
2answers
4k views

Need a few reboots to connect to wireless

I am running xubuntu 12.10 on my msi wind U100 netbook. I have a problem with the wireless connection. Whether the wireless connects automatically to a known wifi hotspot (both at home and ...
2
votes
3answers
8k views

How to enable file sharing between two PCs?

How to enable file sharing between two Ubuntu Oneiric PCs. I have installed Samba both machines I have changed permissions to all create guest accounts file is in home folder Why cant I see shared ...
2
votes
3answers
4k views

How can I configure my server so that my domain points to it?

I have bought a domain name (without hosting), and at home I have a static ip address on Ubuntu server 11.04. How can I redirect users to my web server at home? What configuration needs to be done?
1
vote
1answer
4k views

Lenovo b570 Broadcom Corporation BCM4313 wireless doesn't work

prumar@bluelaptop:~$ rfkill list 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: ideapad_wlan: Wireless LAN Soft blocked: yes Hard blocked: no 2: ideapad_bluetooth: Bluetooth ...
8
votes
11answers
49k 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. ...
6
votes
1answer
4k views

Clean Install Of Ubuntu Server over the network?

I have an install of Ubuntu server, I was recently fooling around with it, and as all learning processes do, I messed a few things up. I would this box to be secure and reliable in the future, So I ...
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
4k views

Mobile broadband sharing over adhoc wireless

I have a Huwaei modem (E1820 to be precise) that i use for my internet whims and fancies. But what I want to do is set up an adhoc wireless network so another device can connect to my network and in ...
3
votes
3answers
3k views

Cannot install driver for a Wimax modem

I'm trying to run a program via wine. This is a wimax modem (Qubee bd) Green Packet uh-235. But when I click the qubeewcm.exe I receive the following error message: runtime error(at-1:0): cannot ...
3
votes
1answer
12k views

Two Network cards and ip forwarding

I want to make "Ubuntu 11.10" act as a router. I have two LAN interfaces. Let's say interface A' IP is 172.16.1.10 ; interface B's IP is 192.168.1.10. How can I configure Ubuntu so that ...
3
votes
1answer
12k views

How to redirect a URL to a custom IP address?

I have an Ubuntu machine that I'm using as my home Internet router. It uses a USB mobile broadband modem as its Internet connection, and shares this with another router (via the router's "Internet" ...
2
votes
2answers
6k views

13.10 BCM4313 network problems after update

I have a problem with my network adapter after upgrading from 13.04 to 13.10. The adapter works for literally several seconds after I establish the connection but then it looks as if it got clogged ...
1
vote
1answer
7k views

No Wireless In Ubuntu 13.10

When I upgraded to Ubuntu 13.10, I can't connect to wireless. The only thing I can connect to is ethernet, so please help me, What should I do? Here is the output of the lspci -nnk | grep -i net -A2 ...
1
vote
3answers
8k views

Broadcom BCM4331: “device not ready firmware missing” error

Just installed Ubuntu 12.04 and I can't connect to my wireless network. My network doesn't even appear. I have a message it says: device not ready firmware missing. This is what I get when I ...
29
votes
3answers
21k views

How do you test the network speed betwen two boxes?

I have gigabit network setup in my house and few Ubuntu based boxes. Out of complete curiosity I would like to check the speed between the two boxes. I am not having any problems with speed or ...
27
votes
2answers
9k views

Network disabled on some wake-ups on saucy laptop [closed]

Since I upgraded to Saucy Salamander 13.10, with every third suspend or so, the network is disabled and I'm unable to re-enable it. I've had to reboot to make it run again. The network menu will have ...
27
votes
2answers
4k views

How to run a script every time internet connects

I often mount a remote drive using sshfs. I would love to have this mount automatically. However, if I mount it in my .bashrc or startup scripts, the mount often fails because my wireless internet ...
21
votes
3answers
15k views

How can I see what ports are open on my machine?

I would like to see what ports are open on my machine, e.g. what ports my machine is listening on. E.g. port 80 if I have installed a web server, and so on. Is there any command for this?
10
votes
3answers
35k 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 : ...
20
votes
2answers
9k views

connecting to archive.ubuntu.com takes too long

I have a Ubuntu 11.10 server that I just installed fresh. Now if I try to do anything with apt-get, it tries to connect to archive.ubuntu.com .. It stays at [Connecting to archive.ubuntu.com ...