Managing and using network connectivity on a Ubuntu system

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bonding virtual network interfaces in ubuntu

I have one physical interface(eth0) and two virtual interfaces(eth0:1, eth0:2) , both of virtual interfaces have Public IP addresses. I want to bond these two virtual interfaces into bond0, As you can ...
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11 views

Conflict between two network interfaces eth0 and eth1

I have a computer connected to the router and the PS2 is connected to a computer. When the PS2 off, the computer connects to the Internet, and everything works fine. But when the PS2 is turned on and ...
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11 views

No route to host at network change, but only some programs

I have 2 Network connections and 1 VPN (OpenVpn). In Network manager I have connection 1 set to Auto-connect, Connection 2 not. OpenVPN is set not to Auto-connect. In etc/network/interfaces I have: ...
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19 views

How do I make the terminal use the wifi and not the LAN

I connected my laptop to a LAN cable and set up a proxy setting which was applied system wide. Now I connected to another wifi network but the terminal stil uses the IP and port no of the lan which is ...
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13 views

Ubuntu 15.04 keeps disconnecting

I had previously posted this question here, but it was closed due to 14.10 being EOL. I have made the upgrade to 15.04. Every so often, my wifi will disconnect. I have posted the output of "lshw -C ...
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18 views

Piggy back ubuntu desktop on my windows laptop wifi so the desktop can access the internet?

I need to have internet on my ubuntu / mint desktop. The only way I can get online right now is wifi and I couldn't get the USB Netgear WNA3100 to work because without internet packages won't install ...
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2answers
32 views

14.04 - Connects to wireless network but can't transmit data

When my computer first boots up I the internet works fine for about 30 seconds. In those thirty seconds it has a harder time loading data and after 30 seconds can no longer transmit data. It still ...
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7 views

Reverse lookup only works when db.192 wrongly configured

Following this tutorial reverse lookup stubbornly fails to work for as long as db.192 is configured as is instructed. However, if I change the line: @ IN SQA server.domain.home. ...
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38 views

How to fix/diagnose this problem: outlook.com does not load in Linux (all browsers)?

Same machine. If boot with Windows 7, outlook.com loads, any browser, I use Firefox most of the time. If boot with Linux (Ubuntu 14.04 64 bits), outlook.com does not load, blank page, no error ...
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14 views

connecting an Ethernet which needs a password and a user name?

I have an account through a wired network (Ethernet) internet provider - a person that have an internet LAN and share it with neighbours in exchange with money - every one of us have an account and a ...
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13 views

L2TP/IPSec VPN Connection

On OS X, there's an option for L2TP/IPSec VPN in network connections where it lets you enter an IP Address, Username, Password, and Shared Secret. I downloaded Strongswan in Ubuntu, but do not see ...
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15 views

Ubuntu has a connection right at startup and then loses it

I have a VMWare Workstation 11 setup with Windows 8.1 (Host) and Ubuntu 15.04 (Guest). My network connection has a static ip and it's a bridged network connection. If I open terminal right after ...
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11 views

Can only connect to KVM linux guest from host

If I ssh into my hypervisor/host (64bit Ubuntu 14.04.2) I can connect to a guest KVM. But I cannot connect to the guest from my workstation in the same subnet as the host. I have a bridge but even ...
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1answer
19 views

Disable IPv4 mapped IPv6

I run a service on IPv4, but sometimes, apparently randomly, it happens that the service uses TCPv6 sockets (I monitor it with ss -s). I want to avoid it, disabling any IPv6 connection. I tried to ...
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1answer
28 views

Connect 3 PCs in chain

I've got 3 PCs with 2 network adapters each - I want to make a cluster from them, but first I need to connect all of them into one network. My idea is to connect first PC to router, share Internet ...
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12 views

Cannot upload files in Ubuntu 14.04

I'm running CS50's appliance on top of Ubuntu 14.04. The internet seems to be working fine and the download speed is normal too. However, I cannot upload files on the internet. Check50 cannot upload ...
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13 views

network require authentication (does the netwrok require authentication?) [on hold]

The solutions I've been able to find or for Desktop OS. This is Ubuntu Server 14.04.2 It is installed as a client in virtualbox. The network settings are setup as bridged and the network itself ...
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1answer
33 views

How to get external IP from remote Ubuntu computer

My ISP typically leaves my IP address fixed, but when there is a power failure, or if their service goes down for more than about 15-30 minutes, my home is assigned a different IP address. My goal ...
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Ubuntu 12.04 server - How to interpret this syslog entries about eth0 interface?

I am getting in my Ubuntu 12.04 server the following errors in syslog/dmesg. Recently the server became multiple times slow in network and causing at time hung application and many errors with ...
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20 views

Wireless connection doesnt work on ubuntu 10.04 [on hold]

I have dual booted my dell laptop with ubuntu 10.04. In ubuntu wireless networks are not getting detected while wired connection works. In windows wifi networks are detected and works without a ...
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18 views

Cannot Connect to wireless in Kubuntu 14.04

I recently installed Kubuntu 14.04 on my old Dell Latitude D630 that used to run Windows XP and the installation went fine. I ran the 'lshw' command and it showed that my WiFi adapter was recognized ...
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Understanding what a MAAS cluster can do and cant do

I have a cluster of 8 machines. One of the machine has 2 NICs with one connecting to the internet and the other connecting to a switch. The remaining 7 machines all have only 1 NIC each connected to ...
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44 views

Can connect to wifi but no internet on Kubuntu 15.04

I am on kubuntu 15.04 and I can connect to a network but I cannot access the internet. I can ping my local IP address and KDE Connect works just fine with my phone, but I cannot ping a website or go ...
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1answer
17 views

automatically select between wired and wireless networks [on hold]

I am using ubuntu 10.04 LTS. I have two interfaces: one is wired and the other is wireless. When the two interfaces are up, ubuntu priorly select the wired to access internet. However, when the wired ...
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11 views

KVM Bridge DHCP - Connection on Host drops - Same IP address for br0 and eth0

I'm trying to create a bridge for a vm in Ubuntu 14.04. My original /etc/network/interfaces file looked like: auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp And after modifying it, ...
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14 views

Trouble Connecting to Wifi on Kubuntu 14.04.02

I just installed Kubuntu version 14.04.02 on my Dell Latitude D630. The installation went fine, but I can't get it to connect to Wifi (or even turn it on for that matter) or bring up a list of ...
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10 views

MaaS DHCP node requesting wrong address

I'm having the exact issue identified in MaaS DHCP issue on 14.04 . The dhcprequest from the booted image is from the subnet that was originally used the first time that I built the maas server. I ...
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15 views

Wifi not working after upgrading to Ubuntu 15.04

I am facing this problem after upgrading to Ubuntu 15.04. I cannot connect to my institution's wifi. I have recently changed my WiFi's password.When I want to update the password It is not showing the ...
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1answer
20 views

Wireless Disabled in Ubuntu 15.04

I recently disabled Networking in my laptop (Acer Aspire V5); it turns on in no way. I reboot several times, I tried keyboard command, edit connection, enable networking of course; via terminal I run ...
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25 views

I have a Ralink Wireless Lan USB Adapter that I can't get to work no matter what I try

I am new to linux so there are many things that I may or may not have done correctly, but I have gone through many solutions on installing this driver for the USB adapter, however, I never have the ...
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12 views

Can't browse network from Nautilus

It's Ubuntu 14.04LTS. Long story short i uninstalled a lot of software by mistake. Among others i uninstalled unity, samba...even nautilus, then switched to tty1 and installed all that i could think ...
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18 views

Wifi networking

Wireless connection is provided in my college through a open connection that routes the data through a proxy. Is this setup more secure( or not) than the ordinary open Wi-Fi connections one comes ...
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30 views

How do I check the flow of internet through ubuntu?

I'm using my Ubuntu computer as a wireless receiver, receiving Wifi from my router and sharing my internet through a gigabit switch. How can I check or monitor the speed that I'm sending data to the ...
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1answer
7 views

Ubuntu OCS inventory ng on virtual machine ethernet doesn't work

It's my first time using this. I have big problem connecting VM to network. I changed network setting on VM to bridged, but whet i use ifconfig -a I only see local and eth2 (which does not have ip ...
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32 views

Internet problem in Ubuntu 14.04.2

Recently I installed Ubuntu 14.04.2 alongside Windows 8 and I'm having problems with the internet connection in Ubuntu. In Windows 8 works perfectly fine but in Ubuntu it doesn't. Well, I'm a noob in ...
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1answer
23 views

wired network connection in xubuntu not working with r8169

I am working on a brand new laptop with xubuntu 15.04. Wireless is working ok. Wired connection says connected when plugged in, and disconnected after 2 seconds or so. "Enable networking" is ticked. ...
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32 views

Home network Speeds (LAN and Wifi) very slow, Internet download is fast

Good evening, I have a home network hooked up and an ASUS (RT-AC68U) Wireless-AC1900 Dual-Band Gigabit Router with CAT 7 running throughout my whole house. My server is wired, Windows 10 machine is ...
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1answer
15 views

ubuntu 14.04 wireless disconnects after rebooting until router is switched off and on

I recently installed ubuntu 14.04 LTS along side Win8.1 on my new laptop. Wireless connection worked well for a day and then it started disconnecting whenever I downloaded something or restarted/shut ...
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1answer
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Can't reach tomcat server on Ubuntu 14.04 host from VirtualBox 4.3 Windows 7 guest or Ubuntu 14.04 guest

I've tried the following posts, as well as skimming through the VirtualBox manual: Windows GUEST accessing my local webserver on Ubuntu HOST? VirtualBox WinXP GUEST accessing HOST local webserver? ...
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13 views

How can I make Stream-Player play audio without a reboot when switching to mobile data?

I've got a BQ Aquaris E5 Ubuntu edition and I'm using Stream-Player to stream Internet radio while I'm on the go. I will usually start listening in the morning at home on Wi-Fi, and when leaving home ...
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1answer
45 views

SSH and VPN Cisco connection working on one laptop but not on another. Both laptops using Ubuntu 14.04. Where is the difference?

I'm trying to SSH to our university server using VPN and WIFI connection. The bug is similar to this one, although different in details. The problem is as follows: Me and my colleague are using ...
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1answer
29 views

How to log in to an internet provider with with a password and user name through terminal?

I have an account through a wire network internet provider - a person that have an internet LAN and share it with neighbours in exchange with money - every one of us have an account and a password , ...
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17 views

Wifi and Bluetooth Not working on Ubuntu 14.04 but working on Windows 8 [duplicate]

Even after updating with sudo apt-get install update (while connected with wired network), it still does not see available wifi nor does the enabled bluetooth able to find any bluetooth, just ...
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39 views

Ubuntu 15.04 destroys my Wi-Fi

I have ubuntu 15.04, my Wi-Fi adapter is ralink rt5390. lshw -C network output: *-network description: Wireless interface product: RT5390 Wireless 802.11n 1T/1R PCIe vendor: ...
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22 views

Wired Ethernet not detected for specific modem Ubuntu 14.04

I have a dual boot system with Ubuntu 14.04 & windows(ethernet & wifi works perfectly in windows) The wifi is not working in Ubuntu so I use ethernet cable. The Ethernet at my office ...
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1answer
26 views

Can't connect to VPN using Checkpoint SNX

I've been using Checkpoint SNX to login into a vpn for the past 6 months and today upon using the command snx -s "my vpn" -u "user" the program appears to just fail without error or any kind of ...
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28 views

resolv.conf is merged from two networks

On a corporate network, when I connect to it via DHCP via a wired connection using Ubuntu 14.04.2 LTS I get the following in /etc/resolv.conf nameserver 192.168.2.254 nameserver 127.0.1.1 search home ...
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8 views

Open Swan - L2TP/IPSEC connection drops Ubuntu Studio 14.04

Since I cannot get an ipsec connection using strongswan I rolled my machine back to openswan and am using the Werner Jaeger L2TP IPsec VPN Manager 1.0.9. Not too sure where to go from here - for the ...
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16 views

Ubuntu internet stops working after a few minutes. Wifi stays connected though

Recently, the Internet was been acting strange on my Ubuntu partition. It works 100% fine when I dual-boot Windows, but the Ubuntu partition connects to wifi for an indeterminate amount of time (0-10 ...
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24 views

wifi and ethernet keep disconnecting

I don't know if this has been asked before, but the internet (ethernet and wifi) is constantly disconnected. I've checked the router, via other devices (such as cell phone and tablet) and access to ...