Managing and using network connectivity on a Ubuntu system

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17k views

List of available wi-fi networks does not show up. Just 'Add' button

Here's the screenshot. It just has 'Add' button, where I have to manually set up wifi (ssid etc). I want to click on Wi-Fi symbol at top right corner and see the list of available networks. How do ...
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1answer
2k views

VPN PPTP disconnects after a random period of time

I can't seem to keep my VPN connection alive. I'm using Ubuntu 14.04 64bit on a Toshiba Protege R30-A-17E. The VPN connection just dies out after a random period of time no matter if I'm using it or ...
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1answer
88 views

Command to display virtualbox vm network information

I am having two VMs VM1 and VM2 i want to attach same network of VM1 to VM2. For that i want to displaying virtualbox VM network information and parse the output. And then attach same network to VM2. ...
3
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1answer
6k views

Network Manager doesn't have option of enable mobile broadband after upgrading 14.04 to latest linux image

Earlier mobile broadband connection seems to work flawlessly but after Upgrading trusty tahr 14.04.1 to linux image 3.13.0-35 there seems to be problem. First it started popping for USB modem ...
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1answer
94 views

Catch Network Connection Events

I want to run a script when i connect to a hotspot which have a login page that runs on first connection. I use that script in order to login automatically without my attempt. I couldn't find which ...
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3answers
555 views

How do I find number of NICs in my system?

While trying to find number of NIC in my laptop, I found this Superuser question on finding the total number of NIC's and ports attached on physical device. I got some commands to try on system : $/...
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1answer
70 views

Trouble connecting to inernet

I can't ping to anything outside of my local network and I think it has to do with my connection not getting a global scope, the ifconfig command returns this: eth0 Link encap:Ethernet HWaddr bc:5f:...
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0answers
417 views

Ubuntu 14.04 Slow/unstable wifi

I have a lenovo Y-50 gaming laptop and after first boot I installed Ubuntu and avoided Windows 8 overall, anyways my internet is really slow and unstable even though the router is in the next room. ...
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2answers
298 views

Not able to discover all avilable wifi networks in ubuntu 14.04 & weak signal strength

I am able to see only a single network, which is showing a very weak signal strength and I'm not able to connect to that too. Please find details below. ~$ cat /etc/*release* | grep -i distrib ...
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0answers
341 views

How do I select network mode in Reliance 3g USB dongle

After googling on internet, I didn't find drivers for my zte modem. In my area 3G coverage is low and I am unable to change from 3G to 2G network, neither manufacturer provides it's drivers for ...
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1answer
177 views

Will Editing HOSTS file in Ubuntu Improve my Network Security?

I have recently learnt about 2 different ways of editing the hosts file in Ubuntu for the purpose of blocking webpages and domains tracking my computer (protecting myself from tracking cookies), and I ...
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1answer
2k views

Wireless not working at all, thinkpad x240, intel 7260, ubuntu 14.04

I just bought a brand new Lenovo Thinkpad x240. After installing Ubuntu 14.04 everything there is no sign of WiFi. The card is intel 7260. It connects normally through a cable DHCP. after "iwlist ...
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2answers
4k views

Static IP Configuration_Ubuntu 14.04

I have a problem setting static IP on my Ubuntu Server 14.04 LTS. My computer has 2 interfaces p2p1 and p1p1. The p2p1 node - primary node - should be visible form the outer world. I use the ...
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1answer
248 views

Dell R210 wired network not recognized during Ubuntu 14.04 install

I'm trying to install Ubuntu 14.04 in DELL server R210 and also in R520, and have the same issue, the network interface is not available/recognized during setup. Same servers run perfectly ok Ubuntu ...
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1answer
669 views

WI Fi Conected server not found 14.04

help here Im new on this system, i have been using version 12.04 for about a year along with windows XP on a Dell GX 680, i finally decide last week to get rid of windows completely and upgrade to 14....
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1answer
156 views

Some sites wont load ubuntu 14.04

I'm using a dsl connection with static ip.Some sites are not working on ubuntu but they are working on windows on the same machine with the same connection.They keep on loading.I also noticed that ...
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1answer
83 views

isc-dhcp for Virtual Machines only

I installed Xen 4.3 on Ubuntu Server 14.04 and added the xenbr0 bridge. The host IP is 145.173.136.2. The network administrator reserved 15 IP's for the VMs: 145.173.136.112-126 So i installed the ...
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1answer
619 views

How do I set a static IP on my Virtual Server?

Can anyone help me to set a static ip in my virtual linux server machine? I did everything but still I am not able to set a static ip. I did the following changes in /etc/network/interface file. The ...
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0answers
86 views

What is the cni0 interface seen on ifconfig

What does the cni0 interface denote? cni0 Link encap:Ethernet HWaddr 00:50:F1:80:00:00 UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1 RX packets:3 errors:0 dropped:0 ...
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0answers
1k views

TP-Link TLWN725N V2 low signal

I'm using Lubuntu 15.04 - 64 bit, kernel 3.19.0-18-generic. My TPlink, is always with low signal(normally 2%). The other computers are working just fine with other wireless pens, with good quality ...
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1answer
126 views

how to open port to the world

I have installed postgresql (or any other service for that matter) on ubuntu 14.04.1.LTS I can start postgres and it is running. It accepts connections on port 5432. This is my netstat output: tcp ...
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2answers
2k views

SQLSTATE[HY000] Unknown host machine name (severity 2)

I have a problem in which I can not find a solution and I was hoping that you could help me out. I rolled back my server and now none of the php scripts can now connect to other servers. The scripts ...
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0answers
278 views

Wake-on-lan from suspend

I am trying to wake up my laptop from suspend using WOL but it didn't work at all. I found this old post for the same problem but I don't see how I can do this for Xubuntu 14.04 that I am using. I ...
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0answers
187 views

Network disappears from list, disconnects, others remain

and Ubuntu, with my first question. I have Ubuntu installed on three machines alongside Win7, so they are all dual boot. I have encountered a WiFi connection problem on one, a Compaq CQ62. The unit ...
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1answer
561 views

how to set multiple gateway

i need to configure multiple gateways in my ubuntu 12.04 server.For example i have two network card with different subnet ip address.172.10.10.0/24 subnet traffic should go via eth0 and 172.20.20.0/24 ...
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0answers
1k views

Ubuntu BIND in LAN problems - DNS request timed out. timeout was 2 seconds

I've got a BIND9 setup on my local network via Webmin. A nslookup doesn't seem to work. Neither does ping google.de. Been looking around and trying several different settings. Nothing has worked so ...
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1answer
97 views

Cant configure existing samba share [closed]

I am sorry for the probably dumb question. I have two Ubuntu server VMs - 12.10 and 13.10. A year ago I have configured samba on both machines somehow with documents share on each. Now I cannot find ...
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1answer
314 views

How can I debug intermittent high pings?

Recently my browsing and gaming (CCS) experience has been disturbed by sudden high pings. Here is an example: ping -i 20 google.com PING google.com (173.194.65.139) 56(84) bytes of data. 64 bytes ...
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0answers
268 views

“Connect to Hidden Wi-Fi Network…” is disabled in my Ubunutu 14.04!

I noticed that some items in network section of my taskbar is disabled. When Wi-Fi adaptor is enabled and no cable connected network is available, following items are available and only BOLD items are ...
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1answer
145 views

ubuntu server not seeing ethernet port

i am trying to setup ubuntu server on a normal desktop computer. the install went fine (even though it didnt connect to the internet) i figured i would have to change some network config settings. but ...
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1answer
435 views

Can access services on my machine by localhost:port but cannot by ip:port

I wanted to access my machine's http rest service (exposed on port 5000) but I could only do it via accessing localhost:5000 but not via 192.168.1.1:5000 where 192.168.1.1 is my IP. I tried after ...
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1answer
925 views

Is there a ubuntu server menu-based network setup tool like during ubuntu install?

During Ubuntu installation I enjoyed using the "Configure the Network" step: I always assumed that there was some dpkg-reconfigure command that would re-run this, and that if I ever wanted to use ...
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1answer
518 views

Just installed 14.04 LTS, all apt-get attempts fail, why?

just installed 14.04 LTS from a usb-flash drive I built using the downloaded .iso image and a tool from pendrivelinux.com. I booted the PC off of the usb-drive, and the installation appeared to go ...
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1answer
3k views

Ubuntu Software Center Not Working!

I really new to Linux. I have no idea how to fix this problem myself. I have installed the newest version i belive. Unbuntu 14.04.1. When ever i launch the Software app, it loads for 30sec then force ...
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1answer
734 views

Can't connect to VPN in Ubuntu 14.04

This is the procedure I followed: Go to System Settings > Network > Add VPN Connection Set in the dialogs that appear: Interface = "VPN" Connection Type = "PPTP" Set the following params (...
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1answer
514 views

No network access until I ping the gateway

I have the weirdest of problems that I can't work out on ubuntu 14.04 LTS. When I start the machine I cannot access the internet and the machine's nginx server cannot be accessed. Running ifconfig ...
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1answer
312 views

my wi-fi is connecting but the Internet is not working

till yesterday everything was fine. The Internet had been working correctly. Today, when I started ubuntu it connected successfully but I couldn't open any web page or do any Internet activity, ...
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0answers
242 views

dns-nameserver entries are ignored after 127.x.x.x

I'm trying to configure a static eth0 in a 1404 vps (lxc container). My interface config is auto eth0 iface eth0 inet static address 192.168.1.1 netmask 255.255.0.0 gateway 192.168.10.10 dns-...
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3answers
189 views

How can I change my IP address?

I want to change my IP address and port to some other values. My idea is to attain anonymity when I browse in the web. Currently I am on a network having static IPs for each system. I know there are ...
0
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1answer
1k views

How to install Idea 3GNet Setter in Linux

I've bought an Idea 3G Net Setter and they have provided "Linux driver" and these are the installation details: 2 Driver installation 2.1 Launch command line By using “ALT+F2”, input” gnome-...
0
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1answer
43 views

nis server doesn't export new users to client machines

After a server migration on a new machine, the new users which are created on the server are able to login in it, but not on client machines (which get user list from the server). For the users ...
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2answers
727 views

Ubuntu 14.04 Server operated as a WIFI-LAN-Router drops packets between LAN and WIFI

I would like beeing able to exchange packets between WIFI and LAN. My Ubuntu 14.04 Server operated as a lan-wifi-router has two physical Ethernet Ports (p4p1 and p5p1) as well as a WIFI Module (...
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1answer
78 views

Ubuntu server detecting electricity outage?

I am in the planning stage for setting up my server and have some doubts. Firstly my network is something like this: One parent PC connected to the internet and 3 other child PCs which are not ...
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0answers
638 views

Both named and dnsmasq serving DNS on port 53?

Is this considered normal for Ubuntu 14.04 ? netstat -tulpn shows that both bind9 (named) and dnsmasq serve on port 53: Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address ...
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1answer
177 views

How to install WiFi driver?

I have a fairly new Gateway Tower. I couldn't play most games on it in Windows 7 so I suspected a glitch in the OS and installed Ubuntu alongside Windows 7. My WiFi still works on Windows, as that is ...
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1answer
4k views

ethernet stopped working on ubuntu 14.04, still works on windows

Everything was working fine on my Ubuntu 14.04 32 bit installation (on a Dell Vostro laptop) yesterday. I shut it down last night and since I powered it up this morning it is no longer handling the ...
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3answers
72 views

Can ubuntu be used to print from school networked printers?

I have looked through some questions but haven't found any direct answers- I am considering a Chromebook because of the cheap price, but not being able to connect to my school's networked printers ...
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3answers
942 views

Wifi not working - Broadcom b4312

And i have tried almost all the solutions to get my wifi work . I have compaq laptop with broadcom b4312 wifi adapter. I have tried installing bcmwl-kernel-source and then b43 drivers. The result for ...
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1answer
54 views

Quad Nics work ONE at a time

Quad nics are not working completely. But there is no error on syslog to trace what's going. lspci | grep Ethernet 05:04.0 Ethernet controller: Digital Equipment Corporation DECchip 21142/43 (rev 41)...
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1answer
2k views

Wifi has trouble randomly disconnects in ubuntu Lenovo IdeaPad Flex 15

I recently bought a Lenovo IdeaPad Flex 15 Touch Dual Mode 15.6” Notebook Intel Core i7-4500U and my wireless connection keeps disconnecting and the only way to reconnect it is to unplug my network ...