Managing and using network connectivity on a Ubuntu system

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Cannot turn wireless networking off

I wish to disable my wireless networking because I have a wired network connection. I am using ubuntu 12.04. In the menu at settings > network > wireless there is an option to press a switch which ...
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0answers
868 views

After update and reboot 12.04 lts server eth0 fails to start

I am working on a 12.04 lts LAMP server. after running the latest updates I no longer have network connectivity. I get fails on boot for "configuring network device" and virtual network device. if ...
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1answer
321 views

Why does arp take so long to execute?

I'am on a wireless network. On windows, arp -a doesn't take long to complete, but on Ubuntu it takes a very long time?
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1answer
2k views

How to enable ipv6 support in linux system [duplicate]

I am trying to enable ipv6 support to my linux system. Im trying to modify /proc/sys/net/ipv6/conf/all/disable_ipv6 this file but system is not allowing to do so.
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3answers
2k views

ubuntu 12.04 Wireless problem hp pavilion

I'm not able to enable Wireless using the hardware switch -f12- on my HP Pavilion dv6-7080-se. the Enable Wireless option is greyd out so I cannot enable it. while starting ubuntu when i press f12 ...
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1answer
825 views

can't connect to BigBlueButton from external address

I installed a bigbluebutton server ver 0.81. When i set ip using sudo bbb-conf --setip 192.168.0.190 It's the local ip address and it work fine. but when i switch to my external static IP: sudo ...
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1answer
2k views

Wired network does not work in Ubuntu, but works in Windows 7

Updated: I have pasted full output of bash command in Ubuntu into here, including ifconfig, ping, nm-tool, modinfo and dmesg | grep e100. Hi all, I can surf internet in Windows 7, just pluging in ...
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1answer
55k views

Putty fatal error: Network error: connection refused (ubunty server) [closed]

I applied the below mention code to my server and after few mins i tried to re-connect to the PUTTY then its started showing me this error Putty fatal error: Network error: connection refused (ubunty ...
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1answer
119 views

KVM and port security

In my test environment I get everything working perfectly the way I want it. Running Cloudmin KVM instances over a bridged adapter. Then when it comes time to install at the data center I hit a brick ...
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2answers
1k views

No wireless and wired on ubuntu 12.04 in Acer Aspire E1-570

I'm running Ubuntu 12.04. After running an update and restarting, on the top right it says No Network Devices Available. Linux can't find the network card. It was working fine earlier.. The command ...
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1answer
1k views

Cannot find eth1 interface [closed]

I installed ubuntu precise on my IBM x3100 server and cannot find eth1 on my interfaces file. Any clue what should I do? Thank you
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1answer
133 views

how i can protect my internet connection from being spoofed? [closed]

(I'm a new Ubuntu user)is it possible that someone on the same network can cut my Internet connection ? is there anyway to protect it from being "spoofed" ? how can i identify who tried to do that ? ...
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1answer
3k views

Cannot connect using wpa_supplicant

I have set up a usb wifi dongle ( Ralink 148f:7601 ) and now I want to connect with it to my router. I am using the following commands : $ wpa_passphrase "SSID" "password" then copy the psk I ...
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2answers
18k views

How to decide which drivers for Ralink 148f:7601? [duplicate]

I have just got my new usb wifi dongle and I am trying to get it running on 13.10. lsusb gives me the following: $ lsusb -v Bus 002 Device 005: ID 148f:7601 Ralink Technology, Corp. ...
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2answers
271 views

I have a Mac OS X Server running a FQDN web site, with Ubuntu VBox running on top:

I want to have a subdomain point to another computer on my network (technically it's an Ubuntu VBox on same server, but with different IP.), but lets just say I started apache on another computer on ...
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1answer
866 views

Network traffic reports as zero bytes

Just installed Ubuntu Server 13.10. I'm in the middle of setting up some scripts that help me monitoring the server's activity. Now I find that the network traffic stays at zero bytes. Here's what I ...
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1answer
1k views

Bonjour bridge with Avahi

I have two subnets with different devices that announce themselves using the Bonjour protocol. Since these messages can be only broadcasted in the same subnetwork I installed the Avahi daemon. I ...
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1answer
385 views

Wifi local connection or unstable connection only

First time posting here, and one-week on Ubuntu 12.04 (on linux, in reality). I'm having problems with my wireless connection at home only. At the university I can use wireless no problem, but at home ...
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1answer
784 views

Ubuntu 13.10 no wired internet connection

I recently installed Ubuntu 13.10. This is my first OS other than windows. I'm able to connect to wifi but not via LAN. Could any please help me understand the issue... I read through a lot but my bad ...
2
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1answer
147 views

SSH key exchange “knowledge” problem

This question may sound a duplicate, but I am confident it is not. I'm playing around a VM with Ubuntu 12.0.4LTS to learn something and my Mac OS 10.9, establishing an SSH connection as per my ...
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1answer
319 views

Sharp network scanner tool?

Hello i was searching but not found about sharp network scanner tool ? Is there any way my sharp machine scanner work with Ubuntu ??? Thanks !
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1answer
150 views

Cannot connect to Wireless Network in 12.04LTS

Spent all night trying every solution online, but still none of them worked. I am a novice to Ubuntu, so Please help! Any idea appreciated! Result of lspci -nn: 00:00.0 Host bridge [0600]: Intel ...
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1answer
119 views

How to set up Dial-Up and VNP on Ubuntu?

I wasn't able to find a way to make my connection work on Ubuntu. It's not an usual type of connection so I was not able to find in anywhere. For me to be able to use this type of internet connection ...
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1answer
719 views

How do I set network speed and duplex during boot?

My problem is that I have ADSL box doing autonegotiation, defaulting to 100Mb. However, my network cable does not seem to operate at that rate. The speed is set to 100Mbps but DHCP fails. I need to be ...
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1answer
317 views

Virtualbox - how to route sound from Ubuntu host to Windows guest?

Is it possible to route my audio output from my Ubuntu Host to my Windows 7 Guest in Viurtualbox? So it appears as a line input? I'm thinking of connecting windows to my PulseAudio server, but as far ...
2
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1answer
52 views

How to specify what network to connect to automatically?

I'm on Xubuntu 13.10, I can connect to two different networks, x and y, I have passwords to both network and I can switch between them at will. When Xubuntu starts, it automatically connect to y, I ...
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196 views

Ubuntu not connecting to wifi sometimes

So I am using Ubuntu 13.10 on my Lenovo U310 laptop and I am having some problems with wifi on it. Wifi usually works fine, it's just that the model has a poor placement of the chip or something so I ...
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1answer
78 views

Wired connection isn't connecting to internet

I have a PC computer installed with Ubuntu 12.4.4 (no other OS) that is wired directly to the router. Router (AE1000) and modem working, have a laptop running Ubuntu and is connected to router through ...
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2answers
499 views

Forward private ip to public ip

I have 2 machines Machine A have two interfaces and webserver eth0 is private ip 192.168.1.1 eth1 is public ip 1.2.3.4 Machine B eth0 is private ip 192.168.1.2 running tomcat(8080) Now how can i ...
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2answers
788 views

Can not access network share of windows 7 from ubuntu

I have a problem in ubuntu 12.04 My lan settings are as follows: 4 windows pc. 1 ubuntu 12.04 desktop. I can see all the network pc on my ubuntu network. I can access shared folders of 3 windows ...
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1answer
3k views

Wireless: Asus PCE-AC68 on 13.10

I purchased a http://www.asus.com/Networking/PCEAC68/ a few months back to use on my plex/backup/minecraft server, with the intention of also possibly using the server as a router. I haven't had ...
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1answer
186 views

Ubuntu Port 80 from some hosts not reachable

I have an ubuntu-server in a LAN. Whenever I try to run a Web-Server like apache2, or any other server like node.js on port 80 it is only reachable for some hosts in the network (the browser is ...
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1answer
242 views

How to bridge between two computers

I have this 3 machines with this setup Computer1----Computer with Ubuntu 12.04-----Computer2 Computer1 have IP 192.168.10.1 and Computer2 have 192.168.10.10. My computer with Ubuntu have 2 ethernet ...
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3answers
892 views

Restarting network over ssh causes hang

I'm running this: ssh root@192.168.88.88 '/etc/init.d/networking restart' It works and outputs the results, but never returns. Yet other commands do. Maybe because the network goes down (as ...
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1answer
109 views

/ect/hosts file error

I am having some issues while running apt-get from my command line. I looked into some answers in askubuntu and found that we have to edit /etc/hosts file. The only entries present in that were more ...
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1answer
98 views

Resolve network connection problem at startup

I encounter problems during starting up Ubuntu 12.04 laptop. There is no internet connection (wired network connection is established though) and there is no error message from network manager or ...
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1answer
1k views

Set network drive / share as home folder?

I've currently got ubuntu to mount my external hard drive on boot and use a folder on there as the home folder. I've just bought a raspberry pi to act as a file server, and I'll be connecting the ...
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0answers
77 views

Can't access websites but connected to wifi

Since I've upgraded from 12.10 to 13.10 I cannot access any websites on any browser but I can use the Ubuntu Software Center. I am a complete noob when it comes to ubuntu and any suggestions would be ...
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2answers
212 views

Ubuntu (wubi version) cannot connect to the internet network

I am new in the world of ubuntu. Recently I installed the wubi version of ubuntu in my desktop and I have the following problem: It cannot be connected to the wired network. When I use the PC in ...
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1answer
1k views

Repeater/Access Point with 2 WiFi interfaces very low bandwidth

if somebody knows an answer to Access Point question! I set up an AP with Hostapd. Works fine if AP is on wireless interface wlan0 and connection to the Internet is wired eth0. I get up/down speeds ...
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1answer
597 views

Network Manager dispatcher.d script error

I wrote a script in "/etc/NetworkManager/dispatcher.d" to open the Firefox preferences dialog whenever I connect to a particular network (college wifi), because I have to enable proxy. The script is ...
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1answer
232 views

Ubuntu 13.10 Wireless Issue

I have recently installed Ubuntu 13.10 on my DELL laptop Inspiron E1505. It seems to work okay except I have yet to be able to connect to the wifi in my home. I have googled several answers on here ...
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2answers
4k views

Mobile-Broadband stick sometimes not detected at all

My mobile-broadband USB stick (lsusb: 12d1:1001 Huawei Technologies Co., Ltd. E169/E620/E800 HSDPA Modem) is sometimes detected and sometimes not. Scenario: I plug-in the stick. It sometimes start to ...
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1answer
101 views

DNS fails intermittently in 13.10 after update

After update of the following packages: https://gist.github.com/xgdgsc/d52ab6a05adafb152221 I get intermittent DNS failure for less than 1 min every a few minutes. At the same time, other devices ...
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1answer
617 views

no ethernet and no wireless working

I tried to install Ubuntu 12.04.4 LTS on my new notebook but the installation failed saying stopping mount network filesystem. So I tried with Linux Mint 13 mate 64bit, and the installation ...
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0answers
345 views

Unable to restart my network services

I cannot restart my networking services by using the restart command. Earlier it was working fine but today I created a lot of mess by giving IPs removing and all. And now when I enter the restart ...
14
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2answers
35k views

How can I make VirtualBox guests share the host's VPN connection?

Question When I start my VPN on my ubuntu desktop computer which acts as a router, the attached subnet loses internet connectivity, but is still accessible (LAN). Ideally, I would like to know how to ...
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1answer
201 views

Xubuntu 13.10 unable to connect to router (with internet connectivity) via ethernet

I'm running a MSI B85-G43 gaming motherboard, just got Xubuntu 13.10 and the installation went fine except for connectivity to the router. I've plugged in my ethernet cable from my router to the ...
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1answer
682 views

Upgraded to 13.10 and my airtel connection manager does not detect Huawei E398 4g LTE modem

I was using the Airtel 4G LTE modem (Huawei E398) with the Airtel connection manager successfully in Ubuntu 12.10 (in one partition, have Ubuntu 13.04 in another partition). Upgraded to Ubuntu 13.10 2 ...
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1answer
728 views

How to use custom DNS server for selected domains only?

There are quite few nice DNS service providers that do region unblocking and advertisement blocking. But I'm not too fond of sharing all my DNS queries with them. How I can use their DNS services ...