Managing and using network connectivity on a Ubuntu system

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Low-res Display and No Networking in Installation and LiveUSB after Thermal Hard Shutdown

My ASUS laptop running 14.04 shut down hard and spontaneously while I was using it one day. Since it was very hot (forgot the heatsink that day), and since Windows used to shut down due to ...
2
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2answers
960 views

how to create a VPN Server

I need to be able to connect my windows users to my Ubuntu Server through a VPN via Internet so that they can brows the Shared Folder once connected to the Server. I basically have 2 NIC's already ...
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1answer
295 views

Link aggregation on a LXC bridge

I'm working on a server with a number of various interfaces (eth0-3) and I currently just use one for both host traffic and another for my LXC bridges traffic. Since I have a few spare ports just ...
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4answers
3k views

Cannot SSH from outside LAN despite port forwarding seems fine

Running Ubuntu 12.04, I've set up the OpenSSH server. I can connect from within LAN, but not from outside. I am using the same sshd_config file as on my other Ubuntu 12.04 machines (that sit in a ...
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1answer
1k views

How to configure an OpenVPN connection in XBMCbuntu 14.04 - NetworkManager is not available with standalone install

I have a question about configuring network settings in XBMCbuntu Summary: - Need to set up OpenVPN connection on XBMCbuntu 14.04 - Can't run NetworkManager from XBMCbuntu 14.04 standalone ...
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1answer
44 views

Wireless connection breaks down

I'm having trouble staying connected to the internet at work. It's strange because that hasn't happened with my home network, but there's something about the office's -probably more complicated- that ...
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1answer
871 views

Connecting to private IP's in Ubuntu 14.04 with Microsoft VPN

I have an installation of Ubuntu 14.04 configured with a VPN connection. I followed this article which seemed to pertain to Ubuntu 12.10 but the instructions seemed to apply for the new version as ...
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1answer
970 views

Sierra Wireless 313u 3G broadband modem will not work since upgrade to 14.04

I recently upgraded my Toshiba Portege laptop to 14.04. Since doing so, I cannot get my Sierra Wireless Air Card 313u to connect. Since this unit worked fine in the previous LTS version, I believe the ...
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2answers
3k views

Creating a wifi hotspot from a wired connection on Macbook for iPhones

I am trying to configure my own hotspot. I've tried following the instructions in this answer: http://askubuntu.com/a/180734/297819 with no use. I don't have 'AP' appear in "Supported Interface ...
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0answers
815 views

Lubuntu wi-fi driver installation with no wired connection

I'm going to install Lubuntu on my parent's old PC (AMD 2200+ 1.8GHz, 1GB RAM, GeForce FX 5200) because new Linux Mint doesn't work with this GPU :( I tried the LiveCD and it does not look as good as ...
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2answers
21k views

How to completely reset ubuntu networking settings?

I would like to reset my network settings and services entirely as if starting from scratch. I had recently installed Ubuntu a few days ago, and deleted a important boot file. After installing Ubuntu ...
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2answers
126 views

Getting a Public IP that is different for my Ubuntu Server then my Homenetwork

Okay so here's the thing, I live in Sweden and got fiber with a internet speed of 100/100 mb/s. They way my network is setup right now is that I got a modem which is hooked up to my router which goes ...
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3answers
679 views

RTL8723AE not connecting to Netgear WGT624 on Ubuntu 14.04

I recently installed Ubuntu 14.04 64 bit on my computer and have been unable to connect to my wireless network on Netgear WGT624 with WPA2-PSK [AES] encryption. I have been able to connect to a ...
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2answers
245 views

Can I share a private IP address on Wi-Fi and Ethernet?

I have a laptop which is usually on Ethernet and has a static IP. Sometimes I need to take it away from my desk and use the wifi. How can I make the Ethernet and Wi-Fi use the same private IP address? ...
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2answers
3k views

Printer Brother MFC-7360N can't print on LAN

I'm trying to set my network printer 'Brother MFC-7360N' on my LAN. All laptops are using Ubuntu 14.04, and I've installed the cups and lpd drivers from Brother, but I can't print on LAN. The printer ...
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0answers
263 views

Problem with wifi : Connection lost on closing laptop's lid

I am having a weird problem with my laptop wifi, it does not have any problems when I'm working on it also if I leave the laptop lid open it does not have any problems or when the screen turns off ...
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3answers
3k views

Firefox says Server not found on Ubuntu but not in Windows

I'm newbie to Ubuntu and I'm using Ubuntu 14.04 (dual booted with Windows 7). Last few days it was working fine but from today my problem as follow as, FIREFOX NOT WORKING IN UBUNTU Note: I had ...
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1answer
2k views

Trying to access Windows 8 computer asks for password 14.04 LTS

I have installed Samba share on Ubuntu 14.04 LTS - I can see my Windows machine via 'Browse Network' but when I double click the icon it asks me to verify my username, workgroup and password. The ...
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1answer
44 views

Need help with network configuration

Without much knowledge I decided to install Ubuntu 14.04 but I'm having trouble setting up the network. After configuring the ipv4 settings and mac address and clicking save nothing happened and when ...
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2answers
412 views

Share connection to router from second ethernet

I read all the previous posts but I didn't find anything that fit my needs. I have a PC with Xubuntu and 2 Ethernet cards. With a port (eth1) I have the Internet connection (static IP address) I want ...
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1answer
231 views

No wifi, network discovery, or recognised wireless interface after hybernation on 14.04

Recently upgraded to 14.04. Worked great until computer went to sleep. On wake, all signs of anything wireless had disappeared as mentioned in title. I've combed the forums, googled and tried so ...
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1answer
184 views

how do i reset or uninstall wifi adapter

My ISP WiFi is not connecting anymore. Time Warner asked if i could have Ubuntu talk me through uninstall & reinstall.... finding a usa 800 phone number was the first problem. Now i am spending ...
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2answers
1k views

Connecting to internet over wifi or tether, DHCP does not set DNS [duplicate]

sorry for bad english. I'm using Ubuntu 14.04 64 bit and I have a strange internet connection problem. When I'm at work I can access internet via DHCP wireless and wired without problems. When I'm at ...
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1answer
131 views

How can i setup a network Lexmark MS812dn?

I have installed the drivers but i don't know how to setup the printer itself to actually print something. Do i have to plug an ethernet cable to the laptop or to a network connection? Which address ...
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2answers
9k views

“Connection is Untrusted ” error in Firefox

I have downloaded Ubuntu 14.04 and I have tried it (without installing it). I connected to the internet via DSL and I tried to surf. When I tried to go to an https:// site, it showed me the error ...
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1answer
1k views

ping the FQDN failed but 'short name' works [duplicate]

I'm on an enterprise LAN (Windows domain and Windows DNS server) and I want to access to another computers on LAN (mostly in https) On my ubuntu (14.04, fresh install) when I do : ping ...
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4answers
2k views

SSH onto new Ubuntu 14.04 server

This is my first server I have set up and I used ubuntu 14.04 to run it. I opted not to use the server install because the regular ubuntu was easier to setup. Now I wanted to make the server ...
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0answers
60 views

ssh, problem with headless device

I have Ubuntu 14.04 installed on a headless device. Since the last update and shutdown it is not possible to connect via ssh anymore. nmap shows the machine is up and in the network, all ports are ...
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1answer
2k views

how to add lxc containers to host's DNS so that getaddrinfo() can resolve them?

I'm running LXC containers on Ubuntu 12.04 with a 3.8 kernel. The containers are on a host-only network, so their addresses are managed by dnsmasq. Is there a way to configure the host so that ...
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1answer
84 views

eth1 slow to come up

Hi when i disconnect the cable from eth1 and reconnect it takes around 30 seconds for the interface to come up and be pingable. We have checked the cisco port and we have portfast enabled. We did ...
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1answer
87 views

mythbuntu 14.04 LTS

Mythbuntu 14.04 LTS; how do I get to a terminal screen or a normal Linux menu? Need to set static IP address. Question was not asked during install. All I see is large character pages with media ...
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2answers
730 views

I got Apache working on localhost (“it works!”), but now how do I get it to work on the internet?

I can see my "website" locally but how do I get it to show up online? Does it need a domain name per se or can't I just get DNS somehow to pick up my IP address and put it online or something, I don't ...
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1answer
4k views

Network booting could't find kernel image

I have a problem with PXE booting. I followed this instruction on official website. But I get an error on client machine: Could not find kernel image: vmlinuz-3.13.0-24-generic And now, question. ...
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2answers
57k views

Proxy authentication with terminal Ubuntu 14.04

I would like to access the internet to update files etc. from the terminal on a secured proxy network. I've already tried the following: Adding to /etc/apt/apt.conf, /etc/apt/apt.conf.d/01proxy, ...
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1answer
1k views

3G EVDO USB modem speed limited on Ubuntu 14.04

I installed Ubuntu 14.04 on a HP dv6 laptop. I connect to the Internet via a 3G EVDO USB modem (CDMA) of Capitel make from BSNL Kolkata, device id 1c9e:9e00. Making this modem get detected by Ubuntu ...
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1answer
2k views

TP-LINK TL-WN751ND not detecting networks (most of the time)

I have the TP-LINK TL-WN751ND. I only bought it and fitted it in the last week. However, it has been causing a lot of issues. Before I bought this PCI card, I researched online to see if it was ...
2
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1answer
257 views

How to change Ubuntu DHCP server address on the client?

How do I tell Ubuntu to use a specific DHCP server IP? I'm building a virtual test network in VirtualBox where I have a Ubuntu server installed. However, VirtualBox doesn't have an option to tell ...
0
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1answer
48 views

Network being disabled after shutting computer

I have Ubuntu 14.04 and I'm running on a Dell Studio with a disable wireless switch. "Why do we even have that switch?" I wonder, but that's besides the point. Anyways, sometimes I just close my ...
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0answers
39 views

Weird problem: can not connect network until a terminal is opened in Live system

Live system based on ubuntu server 12.04.2 with manual installed X and openbox. startx is in a shell script which is called in /etc/rc.local with su -l root -c /scriptsFolder/script.sh A program is ...
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0answers
363 views

Can't connect to VPN on Ubuntu 14.04

I am new to Ubuntu. I have configured VPN set-up on Ubuntu 14.04 but could not connect. System log shows following errors: Jun 28 13:35:50 rana-laptop kernel: [ 9723.920954] sd 6:0:0:0: [sdb] Test WP ...
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2answers
410 views

How to bring up a network interface only if it is physically present in Ubuntu 14.04?

This is a follow-up on my old question: What would be the best way to make kernel bring a network interface up only if it is physically plugged in? So, if it doesn't exist, just move on with ...
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3answers
305 views

My website is accessible on my home network but nobody else can access it on the internet

this is my first server I've set up so bare with me if I lack any important details. I have set up my ubuntu server and have my site working on my home network, I am able to see my website on all ...
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0answers
527 views

Why aren't these ufw rules working?

I'm trying to configure ufw to only allow connections to 3 ip addresses on my local network, and deny everything else. Here's the commands I'm using: yes | sudo ufw reset sudo ufw default deny sudo ...
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1answer
93 views

Adhoc connection between Ubuntu to Ubuntu

On one machine I created one adhoc network with manual setting. that mean not providing any manual IP addresses. And from another machine I am trying to connect that ad hock network.It is showing me ...
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2answers
965 views

Laptop can't reconnect to new wifi hub after suspend

I have a Dell Inspiron 5520 laptop with an Intel Centrino Wireless-N 2230 card, running Ubuntu 14.04. The wifi worked flawlessly with my old Virgin Media Superhub, but after being "upgraded" to a ...
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0answers
253 views

LXC bridging with two NICs

I am setting up a server to host a number of LXC containers, for now just isolating web and db services. The server I am using has two NICs and I'd like to use one for host traffic and one for ...
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2answers
7k views

Intel Wireless 7260 card doesn't connect to WiFi sometimes

(Also posted in Reddit) I have a strange problem. My machine sometimes (more often no than yes) doesn't connect to my home wifi. I can connect to android devices hot spot easily. Windows machine ...
0
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1answer
233 views

Sudden wifi issue with buffer space error

I've been running 14.04 for a while now and haven't had any major issues. A couple days ago though, my wireless connection started dying on me. I hadn't changed anything, so I'm not sure where this ...
0
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1answer
463 views

read only + browseable issue: configured in smb.conf - not showing in testparm

I'm trying to setup a public share with Samba so I can stream my music files from my Ubuntu 14.04 server to my Sonos soundsystem. Been trying to crack this one for a couple of hours, but unfortunately ...
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1answer
118 views

When I try to add a new node to MAAS, does the node need a physical internet connection?

I have two networks: For local and internet connection For MAAS Network as a private network Here are my questions: When I try to add a new node to MAAS, does the node need a physical ...