Managing and using network connectivity on a Ubuntu system

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2answers
8k views

sudo dhclient eth0 | sudo: unable to resolve host ubuntu | Maybe DNS issue

I have a computer of a friend of mine, that runs Ubuntu (I don't know what version, due to the current system status) and while he was updating the kernel, he reboot the computer (yes that could be ...
0
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1answer
441 views

Suddely internet is not accessible

I am going crazy here. One day everything was working fine. I turned pc off and went to sleep. Next day turn pc on and cannot access internet (from any browser). The situation is: I cannot open any ...
1
vote
1answer
821 views

Two networks with the same ESSID, how do I blacklist one or force the other?

I'm here at Starbucks in Kingwood, Texas at the intersection of Kingwood Drive, and West Lake Houston. I'm in a shopping outlet. In the same shopping center just 150 feet away is an ATT Store. The ...
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0answers
1k views

WiFi drops out a few seconds after a reboot (issues with upgrading to Ubuntu 13.10)

I have just upgraded from Ubuntu 13.04 to 13.10 and am facing a number of issues, primary among them being inability to connect to the WiFi. When the machine boots up initially, it is able to connect ...
3
votes
0answers
723 views

iwlwifi on lenovo z570 disabled by hardware switch

It was working fine with windows 7. The hardware switch is not disabled. I've toggled it back and forth dozens of times. The wifi light never turns on and it always lists as hardware disabled. I have ...
0
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1answer
788 views

13.10 Networking restart - wifi icon

I'm wondering how can I bring back the wifi taskbar icon after the following command is executed: service networking restart Normally, that icon would be present to help us switching the available ...
2
votes
1answer
2k views

sftp connection failed, strange error messsage

While I am trying to connect to a remote system from terminal using sftp sftp user@host.ip.address connection is failing and a message coming Received message too long < some long number > ...
6
votes
2answers
4k views

Can't connect to or see my wifi ssid

Today I installed Ubuntu 12.04 on my laptop. I am unable to see my home SSID or even connect to it. I've tried to connect as a hidden SSID but I always get prompted for authorization although my key ...
0
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1answer
2k views

Why fixed address assigned to DHCP server doesn't work?

I have an Ubuntu server that runs DHCP server. DHCP server works good normally, but when I want to assign fixed IP address for my clients, it doesn't work. My codes in dhcp server in dhcpd.conf look ...
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1answer
1k views

How to configure PPPoE in ubuntu under wired connection not DSL

I have ISP who gave me username, password, and authentication type for PPoE and provide ethernet cable wire home to home for accessing internet. Now my problem is how to configure it for wired ...
0
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1answer
4k views

Can't control connection bit rate using iwconfig with Atheros TL-WN821N (AR7010)

I'm trying to reduce the connection bit rate on my Atheros TP-Link TL-WN821N v3 usb wifi adapter due to frequent instability issues (reported connection speed goes down to 1Mb/s and I have to ...
0
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1answer
335 views

Broadlink BCM4313 Driver problem

My Ubuntu version is 13.10 I have issues with my Wi-Fi. When I boot up my OS, the signal of my WiFi show very less or no strength. I have to disable (Software Updater>Additional Drivers>Do not use ...
0
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1answer
119 views

Only my home wifi is grayed out in ubuntu 12.0.4

When I was setting up Ubuntu (for the first time) on my netbook running XP, I decided to skip the network set up initially. Now I can connect to all my neighbors wifi networks, but my home network is ...
5
votes
1answer
6k views

How to set system-wide proxy address using shell script?

I want to set system Proxy address through my Qt application. So i was wondering if i could write a script which can be executed by my application every time to change the proxy address. I tried : #...
0
votes
1answer
44 views

Help connecting a domain and my server

I have a ubuntu server and also I have a domain when I run the serve in LAN (Local Area Network) it works perfectly, but over WAN it cant connect to the server. I have deactivate the firewall from the ...
0
votes
1answer
2k views

how to open windows shared folder

I am running Ubuntu 13.04. I want to open a shared folder in other window PC, with ip address like 192.168.11.10, where a shared document is located. Doing it from Brows Network shows error.
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votes
2answers
7k 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 ...
0
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1answer
260 views

SSH : connection refused after installin freenx

I have my server with Ubuntu-3.10-X64 with working connection and ping; then i installed FreeNX server on my server; then I restarted. After that I can't connect to my server from my laptop using ssh ...
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1answer
42 views

Other people's files showing up in rhythmbox

I have my computer connected to a college network, and right now files that belong to other individuals on campus are showing up under Shared in rhythmbox. This is driving me up the wall, I absolutely ...
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vote
1answer
2k views

Understanding results of nslookup

I'm looking at the nslookup command, and I couldn't exactly understand the results it shows. A sample output nslookup ubuntu.com Server: 192.168.0.1 Address: 192.168.0.1#53 Non-authoritative ...
0
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1answer
89 views

Unable to connect to wireless network thru alternate driver

I just installed Ubuntu 13.10 on my Windows 7 PC. Am a complete newbie to the linux system. I first created a bootable Ubuntu USB to try out the OS without installing and the wireless worked fine ...
1
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1answer
172 views

Wake on Lan on Ubuntu?

There is a computer in lab I need to turn it on wakeonlan, I followed these instructions. I used gWakeOnLan tool to wake up the system. The default UDP port number is 9 and i checked from the website ...
1
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1answer
12k views

TFTP Error code 1: File not found

When I'm sending a file through TFTP remotely, it shows an error like tftp> put MYMIBTable.txt /home/amsys/Desktop/ Error code 1: File not found What is the problem? What is the ...
1
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1answer
3k views

device not ready firmware missing

Machine: HP dv9925nr, stock hardware. OS: ubuntu 12.04 LTS Issue: Broadcom wireless card seems to be missing firmware, according to error code from Networking menu: device not ready (firmware missing)....
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1answer
1k views

How can I make wired internet connection work in 12.04 LTS?

It stopped working after the first software update. I would be grateful if someone can help me fix this problem. Running a System Test for networking only, the following results were obtained: ...
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0answers
410 views

Issue restarting after changing /etc/network/interfaces to a static IP Ubuntu 12.04.3 LTS

I've been trying to set up a static IP address on my new Ubuntu build (12.04.3 LTS). I changed the following lines in my /etc/network/interfaces file from: auto eth0 iface eth0 inet dhcp to: auto ...
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0answers
11 views

Throttle Bandwith for a specific user using iptables [duplicate]

I need to throttle internet speed for a user. More specifically I want to decrease it to 30 kbps from current 3.1mbps for one user. I search around, and found guides on how to do it using squid's ...
0
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1answer
996 views

No network after installing the new Ubuntu 13.10

Installed the new version, having trouble engaging the network. I cannot sign on to the internet. Do I need to go find the wireless adapters for my laptop?
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1answer
3k views

Ubuntu 12.04 connected to wireless network but internet not working [duplicate]

I can connect to my house's wireless network just fine, but when I'm connected I can't browse the web. Firefox starts connecting to a site and then just poops out. This doesn't happen on my roommates' ...
1
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1answer
214 views

Correct way to set DNS

I have a DNS server running on my computer, and I want Ubuntu to use it to resolve addresses. I've setup mydomain.com as a custom domain I went into Network settings, switched to manual in 'Wired', ...
3
votes
2answers
1k views

Impossible to ping when activating second network card

I'm new to Linux, trying to get a Clonezilla server up. I'm really bad at understanding how my network should be configured. eth1 is the card for internet access, behind a proxy (192.168.41.5:80) eth2 ...
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votes
2answers
2k views

Hardware wireless switch has no effect after suspend and 13.10 upgrade

This seems to be a fairly chronic problem, as shown by the following questions: How do I fix a "Wireless is disabled by hardware switch" error? Wireless disabled by hardware switch "...
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2answers
4k views

Lubuntu 13.10 - Laptop Loses wireless after sleep

I'm running Lubunu 13.10 on an hp G62 - I'm new to Lubuntu having used ubuntu previously, but I've made the switch as my laptop is now getting toward the lower end of acceptability, and I'm delighted ...
0
votes
1answer
6k views

Cant connect to Ethernet after system installation (Ubuntu Server)

I have installed Ubuntu server edition on a computer. During the installation I skipped the network configuration, and now I don't know how to connect to the internet via LAN / Ethernet.
3
votes
3answers
13k views

Connecting to Internet using TataPhoton 3G dongle(ZTE MF190) Ubuntu 12.04

I have bought a new Tata Docomo Photon 3G Dongle and I want to use it from Ubuntu 12.04. When I connect the device, its detected but I don't know how to install the software packed within it or ...
4
votes
1answer
2k views

How can I stop sending my hostname via DHCP?

Ubuntu sends my computer's configured hostname to any DHCP server it tries to use. How do I stop it from sending a hostname?
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0answers
14 views

reliance netcnnect [duplicate]

my reliance netconnect is not being detected. I have ubuntu 12.04 and in it wvidal is also not installed.So please help me to connect reliance netconnect and install wvidal. I have windows installed ...
2
votes
0answers
56 views

Randomly losing connection but still in LAN

At work I am using ubuntu 12.04 on my laptop. Throughout the day I randomly lose connection to the internet, but I am still in the WLAN. Like, when I try to connect to google it will timeout and not ...
0
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1answer
178 views

network configuration in ubuntu 12.10

my windows 7 settings is below and its working properly. IP address 192.168.46.31 Subnet mask 255.255.255.0 Default gateway 192.168.46.1 Preferred DNS server 10.230.253.253 Alternet DNS server 203.147....
5
votes
2answers
5k views

acquire::http::proxy for only specified repositories

Is there a way to use acquire::http::proxy for some repositories? I'm in a network that has a proxy server. So everybody has to update /etc/apt/apt.conf adding the lines like Acquire::http::Proxy "...
1
vote
1answer
3k views

Network Printer “Print Data Error” receives data but does not print Ricoh/Lanier LD520C

I've been tearing my hair out trying to figure this out. I just tossed WIN8.1 because I could not make any hardware work, but it had similar symptoms. First I tried with Ubuntu 12.04 32 bit Then I ...
0
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2answers
112 views

ip address configuration in ubuntu 12.10 [duplicate]

I am unable to edit /etc/network/interfaces and /etc/resolv.conf file with vi editor. How can I access the file as a owner? This is my network settings in Windows 7. I want to configure it in ubuntu ...
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3answers
3k views

Can't access some websites using Ubuntu 13.10

Something's wrong with Ubuntu. Since I've upgraded to 13.10, I can't access some websites for no apparent reason. I've tried everything imaginable to solve this problem : Made sure that MTUs are ...
2
votes
1answer
805 views

Wake On Lan (WOL) for Realtek RTL8101E/RTL8102E

I'm unsuccessfully trying to get Wake on Lan to work with my local server (IP Address : 192.168.0.2, distro Ubuntu 12.04.3 LTS) which has a Realtek RTL8101E/RTL8102E ethernet card. The computer ...
0
votes
1answer
221 views

Installing Network Manger on Ubuntu

I have deleted accedently the network manager from Ubuntu 13.04 on my HP pavilion 13.04. Now I am not able to connect to the internet using my laptop. I have downloaded the two .deb packages of ...
3
votes
1answer
9k views

apt-get update stuck at 100%[Waiting for headers] at “Hit http://security.ubuntu.com precise-security/universe Translation-en”

Not sure what has happened to my Ubuntu 13.04 server. It is pretty much a LAMP & SAMBA server only, no other apps installed, no shell, command line only. I run an apt-get update a fortnight ago ...
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vote
2answers
1k views

No Wireless Networks, BCM4313 [duplicate]

Just bought this little Asus 10 inch laptop that came with Ubuntu 12.04. Everything at my home was fine: Wireless identified and connected. As soon as I went to my girlfriend's house the trouble ...
1
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1answer
950 views

Why would 70-persistent-net.rules have no effect?

I've got a saucy server with a lot of NICs and they end up with weird names like "rename19". I know interface names can be changed by modifying the /etc/udev/rules.d/70-persistent-net.rules file. The ...
0
votes
1answer
91 views

after software update, website not accessible

I just applied a bunch of recommended updates this morning (which seems to have upgraded the kernel to 3.8.0-32.47), and suddenly I cannot connect to the machine on port 80 (http) or 22 (ssh). Ping ...
0
votes
1answer
1k views

ubuntu 13.04, wifi not detecting after restarting PC, after a weekly software updates installation

I am pretty new to Ubuntu and been using it along with windows 7 since past few weeks. I manage to resolve all those preliminary issues with WiFi adapter(Drivers and all) after a fresh Ubuntu ...