Managing and using network connectivity on a Ubuntu system

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Internet connectivity lost after 8-27 update

Lenovo G50-70 Ubuntu 15.04 Verizon DSL used and useful for 8 months. After 8/27 update will not connect. Verizon DSL not listed. Sprint USB Franklin will connect but unusably slow. apt-get update ...
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33 views

Continuous WiFI issues on a MacBook Pro with Kubuntu 15.04 installed

I recently installed Kubuntu 15.04 on a MacBook Pro, and I've had various issues wi which includes WiFi disconnecting, reporting "Configuring Interface," and then reconnecting, or forcing me to ...
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23 views

wireless connection not connecting on Ubuntu 14.04

when I run sudo lshw -c network I get *-network description: Wireless interface product: RTL8723BE PCIe Wireless Network Adapter vendor: Realtek Semiconductor Co., ...
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1answer
15 views

Ubuntu Server automaticly connect to VPN at boot

I need to set up a server out in the field. The power and network conditions are not very good. The location is unmanned. I need the server to connect to a vpn every time it boots or re-connects to ...
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29 views

WiFi problems pages dont load up

I have WiFi problems on my Lubuntu laptop. When I connect it through ethernet cable it's all good, pages loadup quickly without any problems, but if i connect through my WiFi connection pages either ...
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14 views

When internet connection with my WiFi is slow/doesn't exist, Ubuntu automatically disconnects me

When I am connected to my WiFi, if connection drops.. or if my Internet is really slow Ubuntu automatically disconnects me. It is annoying because I can't connect to 192.168.1.1 (Modem's/Router's IP) ...
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1answer
24 views

Epson WF-2520 Printer on Network (Ethernet-Connected)— iScan

This specific printer does print normally both in elemntary OS and Lubuntu. But the Image Scan! for Linux does not work iScan:Could not send command to scanner. Check the scanner's status. I am new ...
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6 views

My AP service is running some seconds then stops

I did this till the issue: made a script running a Wifi Hotstop :: works ok made a service "WifiHotspot" and put it in /etc/init.d added it for boot launch: update-rc.d WifiHostpot defaults 95 ...
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27 views

How to establish strongSwan IPsec/L2tp connection using gnome

I have successfully installed strongSwan on my ubuntu desktop and I am now trying to connect it to a L2TP server. The admin provided me with Username Password Gateway IP PSK From the top right ...
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20 views

Installed 14.04 and can not connect to wifi

I just installed 14.04 and cannot connect to wifi. I am currently using a wired connection but my other computer and phone are connected just fine so it isn't my internet. I've been through all ...
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25 views

Ethernet not getting detected on xubuntu

Ethernet suddenly stopped getting detected in my xubuntu a couple of days ago. It is working fine in Windows 8. Went through several threads here and elsewhere but nothing has helped so far. I have ...
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20 views

How to use the --configure option in the network-admin tool

Well, I have no idea. Neither Ethernet connection 1 nor the standard interface name pair eth0/eth1 nor the internal interface name of my network adapter works here. It occurs to me that network-admin ...
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13 views

Determine nameserver to use behind a proxy

I have access to internet only behind a proxy. apt-get works fine but when I do ping google.com I get ping: unknown host google.com. This is not the case when I do ping without a proxy. How can I ...
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10 views

MAAS Region and MAAS Cluster Master on the same machine

I have installed MAAS with Ubuntu 14 server and I am trying to set up the cluster master. When I make any change to the cluster master interface I get this error Error: Unable to connect to cluster ...
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19 views

ipaddress of ipv4/ipv6 address [closed]

IM new to networking and would like to know the ipaddress of the given address :- c23385f4-80ab-4501-b123-d2b6ae9bb60d (I have changed the nos little bit) How will I know if this is a ipv4 or ipv6 ...
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1answer
12 views

Test my custom created DNS?

I used VPS Ubuntu 14.04 (x64) to install test environment for my Ruby on Rails development. And I succeed with installing and configuring. Now I also configured DNS on that VPS server, everything ...
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10 views

Disconnected- you are now offline Error

I am new to Linux and this group as well. I have installed Ubuntu 14.04. And I am currently facing an issue with internet connectivity. From past few days, I have read several posts related to ...
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22 views

CUPS not working

so .. we have a problem hemre! server with ip 192.168.1.2 on the adapter1 /internal network/ ip 10.8.0.1 on the adapter 2 /external network/ cups installed with /etc/cups/cupsd.conf MaxLogSize 1m ...
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11 views

Toshiba Laptop wifi issues using live Ubuntu [closed]

I am running my Toshiba laptop from Ubuntu live distros mounted on an external usb hard drive. I had been using Ubuntu 14.xx without any issues. However, being curious, I wanted to try another ...
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1answer
17 views

How to install tomcat 8 in ubuntu 14.04 along with setting the path

I tried to install tomcat 7 earlier, but while i was executing my application, the the java file could not run. Because the path was not set. So please tell me How to install tomcat 8 in Ubuntu ...
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102 views

Why does not the Wireless Connection get any Internet access?

I have been carefully reading a few web pages related to this topic before deciding to ask Ubuntu, but unfortunately now I have to come out of my hide-out and to ask for some more professional help. ...
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29 views

Cannot connect to ethernet

I have a dual boot laptop. In Windows I can connect to ethernet without a problem but in Ubuntu Trusty it cannot get an IP address. Doesn't seem to be the network's fault because I've had this problem ...
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51 views

Dell XPS 13 (2015) cannot find some wireless networks

I have Dell XPS 13 9343 (Ubuntu 15.04, 3.19 kernel) with Broadcom BCM4352 wireless card and it cannot find some wifi networks including mine. My other notebook (same Ubuntu version) and cellphone have ...
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31 views

Steam does not connect to network [closed]

Full disclaimer: I am running SalenOS, which is an Ubuntu 14.04 derivative, but not vanilla Ubuntu. I don't have some things like the Ubuntu GUI Package Manager. When I try connecting to Steam, it ...
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20 views

Wireless connections do not work in Ubuntu 14.04 LTS

I'm on a HP laptop running ubuntu with windows 10 (dual boot). All wireless connections are being detected by the network manager but I'm not able to connect to any of them. I ran this script : ...
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6 views

Common solutions not fixing wireless internet dropouts

I've been working on this since I installed 14.04 LTS almost two weeks ago, and nothing is working. I've disabled IPv6, redownloaded the wireless driver, updated the driver, set the dns server to both ...
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1answer
16 views

Accessing router with Ubuntu client from remote

Is it possible to use my router Dlink-655 as a (gate)way to watch Netflix when travelling abroad? In other words, can I connect to the internet abroad and from there to my router and use my router's ...
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27 views

wi-fi, driver problem

I recently installed ubuntu 14.04 alongside windows, and one of the first things i noticed is that my wi-fi switch (fn+f3) didn't have any effect. I looked up the problem online, and the only results ...
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12 views

Routing within Linux while connected via VPNC

I have a trouble, when i connect to A vpn server at that time my VPNC client machine is not locally available within the Local Network and VPNC client machine is only accessible within the Same WLAN ...
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32 views

Lubuntu 15.04 WiFi

I have a macbook 5,2 and downloaded Lubuntu 14.04 and WiFi won't work. I did a command to find the card (forgot what command exactly) and it came up as a Broadcom BCM4322. On the mac system profiler ...
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16 views

Ubuntu update failed because of forced ads from ISP [duplicate]

Sudo apt-get update never finished, giving "GPG Error bla bla InRelease: Clearsigned file isn't valid, got 'NODATA' (does the network require authentication?)" I believe the culprit is my ISP, they ...
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2answers
28 views

Wireless disabled problem

I had a problem with wifi on my Lenovo g50-30. wifi was disabled. I read on ubuntuforums that command: sudo modprobe -r ideapad-laptop sudo rfkill unlock all rfkill list all would help and it ...
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2answers
22 views

libvirt networking problem: Host cannot access Internet (while guests can!)

I run a Ubuntu machine which hosts via libvirt several guest VMs (also Ubuntu). The guests can access the Internet, while the host can only reach the local network, including the gateway. This seems ...
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17 views

Network disconnected over and over again

Network keeps on disconnecting after 2 to 3 mins on Ubuntu 15 gnome and every time I have to run sudo service network-manager restart to get it working again
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28 views

Broadcom BCM43142 driver

This is a continuation of this question. One answer said that the driver for the Broadcom BCM43142 wifi chip has "not been released into the mainstream yet". Does anyone know when it will become ...
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2answers
30 views

After modifying /etc/hosts which service is needed to be restarted in ubuntu

After modifying "/etc/hosts" which service is needed to be restarted in ubuntu !
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53 views

Wifi driver not working properly dell inspiron 1525

I tried just installed Ubuntu 14.04 LTS on a colleague's Dell inspiron 1525 who wasn't happy with his previous os... I tried to install the basic driver, with $sudo apt-get install ...
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1answer
23 views

Ubuntu vmware workstation guest doesn't connect anymore after windows host update from 8 to 10

I'm using VMWare Workstation 11 to power a Ubuntu 15.04 virtual machine. My Host operating system was Windows 8 and the NAT connection from Ubunto to the Internet via my host system worked perfectly. ...
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1answer
23 views

Bind on non-recursive mode doesn't work

I installed bind for caching server and recursive mode works well. But Non-recursive modes doesn't work well. Here are option contents of /etc/named.conf (For recursive) options { listen-on ...
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38 views

How to enable Wi-Fi in HP 15-r250TU

I have recently purchased a HP Laptop. Model number is HP 15-r250TU The problem is, I can not connect to Wi-Fi in Ubuntu. I tried installing Windows. Wi-Fi works fine in it. Can anyone help me?.
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12 views

Ubuntu Linaro 15.01, unable to get WiFi working

I installed the latest Ubuntu from the Linaro website to my Pandaboard ES. Everything works great and boots correctly but I can't get WiFi to work. When I run iwconfig it reports: wlan0 no wireless ...
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1answer
38 views

Why cannot allow/deny specific software in ufw Linux?

Why cannot allow specific software (like Firefox) to use internet but deny other software (link Chrome) that are using same port in ufw? In windows there is the feature, why ufw don't have that?
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8 views

Networking Issue, Binding on 14.04

IPs routed at the switch just fine. interface Vlan100 ip address xxx.xxx.235.1 255.255.255.0 secondary ip address xxx.xxx.236.1 255.255.255.0 secondary ip address xxx.xxx.237.1 255.255.255.0 ...
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1answer
24 views

How to rotate WiFi connections?

I have 2 WiFI connections available. Sometimes, the WiFi network disconnects, and when that happens, I'd like the system to automatically use the other connection. How can I do this in Ubuntu?
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19 views

No network in recovery mode

I have some problems with the display, so I need to go into recovery mode to repair that. Now the problem is that I can't get the Internet to work. After I get in the command line as root, I do ...
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1answer
34 views

Problem during install Ubuntu 14.04, 14.04.1 and 14.04.2 on HP DL360p Gen8

I'm trying to install Ubuntu 14.04.1 on a HP Proliant DL360p Gen8 with 2 HP Network card 560SFP+ (one onboard and one PCI-E). When network configuration comes up, no DHCP is found even if there is ...
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10 views

Create WPAD and PAC configuration files for branch proxy configurations

Below are the configuration of current proxy.pac file. function FindProxyForURL(url, host) { var resolved_ip = dnsResolve(host); if (isInNet(resolved_ip, "10.0.0.0", "255.0.0.0") || ...
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Change virtual box ip from 10.2.x.x to 192.168.x.x

I have applications and xampp setup on virtual box with ubuntu 12. The ip address for virtual machine 192.168.x.x but after installing vmware ,ip change for virtual box to 10.2.x.x I want to change ...
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1answer
678 views

How to build a simple chat using netcat?

I am currently working on a project and I have implemented a simple chat application using the netcat libraries. The client is prompted to enter port number and the command nc -l -p xxxx where ...
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14 views

Selectively route through VPN connection

For a single Ubuntu PC connected to the internet via a normal home router, and with a regular VPN connection as set up through the GNOME network tool, is it possible to apply any constraints as to ...