Managing and using network connectivity on a Ubuntu system

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Route all LXC container traffic through host VPN connection

I have a host with an OpenVPN connection working on tun0 but not routing traffic through it. How would I configure an LXC container to route all it's traffic through the OpenVPN connection on tun0 ...
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How to connect Dual NICs in same system to each other

OK here is what I want to do, it may seem odd but its part of a piece of test equipment and I'm trying to validate that both Ethernet connections work on the same system. I have a system (many ...
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Can't see 5ghz networks, despite iwlist channel results

I can't detect 5ghz wireless networks, despite iwlist channel saying I should: $ iwlist wlan0 channel (...) Channel 36 : 5.18 GHz Channel 38 : 5.19 GHz Channel 40 : 5.2 GHz ...
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Wi-fi is enabled but unable to view Wi-Fi networks. [system wireless is ON]

Please help me. My Wi-Fi is not working from few days but my LAN is working fine. System wireless is ON. System is updated according to me. system has : Network controller [0280]: Intel ...
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ifdown: interface eth1.10 not configured Ignoring unknown interface eth1.10=eth1.10

Trying to add a vlan pool: This is the entry that I had made in the /etc/network/interfaces file: iface eth1.10 inet static address 172.85.85.1 netmask 255.255.255.0 ...
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16 views

Missing WiFi drivers on old Mac

I am having trouble with the Wifi drivers on my new instillation of Ubuntu. This is my first time using Linux, but I am familiar with Unix from OS X. I have replaced OS X with Ubuntu on an older model ...
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12 views

using ddclient with namecheap dns service doesn't update IP

I have just set up my first ever home server. I created root, made the IP static on my local network, installed openssh, and can now ssh into the computer as long as i am connected to my homes router. ...
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TRENDnet TEW-648UBM 802.11n 150Mbps Micro Wireless N Adapter not working

Okay, so I purchased a usb wireless adapter for about 25 bucks in the hopes that it might work better than my on-board Broadcom one. When I type in the following command: lsusb I get the following: ...
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15 views

How to setup Samba to register with an Active Directory Domain Controller?

I am trying to setup an Ubuntu 14.04 server on a windows network. The server has a static IP address assigned to it. I need to be able to register the hostname (argo) of the server with AD domain ...
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Why can't I download the certificate from a wifi network?

Trying to log into my library's network but it keeps saying that I need to designate what certificate to use- the only options are ignore or designate. Designating involves finding some cryptic file ...
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rtl8192ce can't associate to access point

I'm at the very beginning of the Ubuntu Installer where it asks to connect to a wireless network. The router, linksys, shows up on the screen, but fails to connect. When I run iwconfig I can see that ...
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Cannot connect to university wireless network, “disconnected - you are now offline”

I have trouble connecting to my universities wireless networks. My computer (running Ubuntu 14.04) shows me the available networks and tries to connect to them. It fails continuously just showing the ...
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Windows7 machine cannot access Linux share folders via Samba, help please

I have a linux and a windows 7 machine connected via samba. My linux machine is able to gain access to the folders on the windows 7 machine via the browse network tab in file manager but the windows 7 ...
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28 views

DNS Issue in ubuntu 14.04

I am facing DNS resolving issue sometimes in my Ubuntu 14.04.2 LTS trusty. I have configured my system with network manager to work with static IP assignment. I have also tried by changing DNS server ...
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474 views

Output only MAC address on Ubuntu

In Ubuntu, with command ifconfig -a, I obtain all the information about my ethernet/wifi interfaces. But I need to obtain as output only the MAC address, like: ab:cd:ef:12:34:56 57:89:12:34:ac:23 ...
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Ubuntu 15.04 : The save button in the 802.1x security is disabled when you choose PEAP in Authenication in network setting

The save button is disbaled when the PEAP in the authentication is choosed in the Network Connection ---> 802.1x Security. because of this I'm not able to connect to my network
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Why is Ubuntu resolving non-existent names to a local machine?

The domain www.hjhhfuddsa.com does not exist. However, if I browse to it in any web browser running under my Ubuntu 14.04 machine, I see the configuration page for an old NAS enclosure at ...
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Realtek RTL8723BE Wifi Disconnecting After few minutes

I have Realtek RTL8723BE Wireless LAN. I am successfully connected to a network and doing works for minutes. Suddenly I noticed after few minutes that not a single page is opening, showing resolving ...
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33 views

Use of Predictable Network Interface Names with alternate kernels

Almost constantly, I use kernels from the Ubuntu kernel PPA, or kernels I have compiled myself, using the Ubuntu kernel configuration. The problem is when I am using the stock kernel it seems to ...
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26 views

Can't connect to Ubuntu server

I installed the Ubuntu 15 server on a different computer and brought it to my Dell power edge 1950. After that I booted the power edge and now it is not connecting to the router. All I see is a solid ...
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18 views

XPS 13 with infinity display internet troubles

I have a new XPS 13 with infinity display,and with a Broadcom network controller: BCM4352 802.11ac. The Ubuntu version I'm running right now is 14.04. It's a beautiful machine, but I keep having wi-fi ...
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suppress http proxy not found message

On my Ubuntu laptop I use a HTTP proxy PAC script located in my own network to be able to use my preferred settings wherever I am. I always start my network connections manually so I can make a choice ...
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24 views

D-Link DWA-130 rev E1 RTL8191SU Wont Connect to Network (14.04)

Having a problem with getting my D-Link usb Wi-Fi dongle to connect to my wifi network. The dongle works, it scans and gives back the SSID's that are available, however when I try to connect, it ...
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22 views

How does DNS resolution work without any nameserver entries in resolv.conf?

I have a query on the purpose of the resolv.conf file. If I delete the name server entry from the /etc/resolv.conf file, my browser still able to do the DNS query. As far as I know, any URL is first ...
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Virtualbox and networking

I have installed Win 7 in Virtual Box but am unable to see my NAS Drive. I have checked under network and can see the internet. I looked under network in Virtual Box and it is set to NAT.
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nameserver 127.0.1.1 in resolv.conf won't go away!

I've read that I should have nameserver 127.0.1.1 in my /etc/resolv.conf file only if my machine has its own DNS server. Since it doesn't, having it causes problems. But no matter what I do I can not ...
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22 views

Lost Network Connection after apt-get upgrade from Ubuntu 14.04.1 to 14.04.2

I recently did sudo apt-get update and sudo apt-get upgrade on my Ubuntu Server 14.04.1 installation and it upgraded to 14.04.2. I shut down the machine for the weekend. When I started the machine ...
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12 views

Direct Shared Connection Traffic to Specific Interface

On Server 2, I have interfaces eth0, wlan0, and wlan1. On Server 1, I have eth0. I want to share wlan1 on Server 2 with Server 1 via eth0. I want Server 1 to only use Server 2's wlan1, and Server 2 ...
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23 views

Cisco AnyConnect network traffic when running on Ubuntu 15.04

I recently upgraded my laptop from Ubuntu 14.10 to 15.04 and found that whenever I open a vpn connection using cisco anyconnect I immediately see a lot of outbound network traffic. This only stops ...
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20 views

How to persist on a wifi connection after disconnection?

I've got a Ubuntu machine running a software that requires internet. However, sometimes the wifi fails (router reboot for example) and doesn't find the network again, until I manually service ...
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46 views

ap-hotspot not working after update to 15.04 (64 bit)

I have recently updated to Ubuntu 15.04 (64 bit). My `ap-hotspot' configuration was functional in the earlier installation. In the current scenario, the devices present around my computer are no ...
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Ubuntu 14.10 won't connect to a captive portal but will in a vmware client on same machine

Okay I have Ubuntu 14.10 on an Acer c720 Chromebook and have a very strange question. I haven't seen anything like it when searching so I'm asking. I can't get any browser (firefox, Chrome) to bring ...
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16 views

Cannot connect to samba share after upgrading from 14.10 to 15.04

My Blackberry Playbook mounts samba share when connected via usb cable: After upgrading when trying to open share I get following error: ~$ smbclient -L 169.254.0.1 -N Connection to ...
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66 views

Fresh Ubuntu 14.04 LTS doesn't detect Broadcom BCM4312 Wi-Fi

I just installed Ubuntu 14.4 LTS on 32-bit Dell Inspiron 1545 (that was actually pre-packaged with Ubuntu 10.x in about 2010). For some reason, it doesn't have the capacity to scan for nearby wi-fi ...
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54 views

Torrent being used by another person in the network [duplicate]

I'm using Ubuntu 14.04 LTS, and I know it comes with Transmission (even through I never used it or any torrent client in Ubuntu). I know that it can be a little dangerous if you use torrent clients ...
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Offline Driver Installation intel(R) 82562V-2 10/100 Network Connection [on hold]

I have recently acquired a Dell Vostro 200 with a missing hard drive, i got a hard drive off a optiplex 720, and it now has GB160, i installed PCLinuxOS LXDE, was ecstatic to boot it up, and when i ...
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22 views

Remounting SMB shares when changing between wifi/wired networks

I've been battling with this for a while with mixed results. I frequently move my laptop between it's dock (wired) and my couch (wireless). Anytime I switch networks, I have to manually run "sudo ...
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32 views

Network not working well after 15.04 upgrade

After upgrading to Ubuntu 15.04 I've got problems with networking. I can connect to any wireless and wired connection normally but the connection to Internet is poor. It works a few minutes at a time ...
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21 views

802.11n with ath9k: only 90 Mb/s

I have Atheros device for Wi-Fi (ath9k), the router is a Dlink DSL-2750B. I have configured the router only for 802.11n but I don't have 300Mb/s. This is the iwconfig output wlan0 IEEE ...
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28 views

How I can control Download/Upload bandwidth for each user or device is connected to my netrowk?

I have home network and all my brothers use it "each one has his own device pc or phone " so I want sometimes to limit their speed of download/upload so i want to make it temporary not from the ...
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13 views

how to get GOBI WWAN working for dummy (me)

I am trying to get a GOBI (think its 1000) working on xubuntu 15.04. its seen in lsusb and i installed the firmware loader. still not sure what's next, but it all worked out of the box on 14.04lts. ...
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71 views

Ubuntu 15.04: eth0 is no longer working after last software upgrade

After the last software update on my Ubuntu 15.04 system, the wired network interface has stopped working. The eth0 interface is still configured and the ping to the DHCP assigned address works fine ...
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12 views

Proxy VPN settings in Network Manager: for remote or local?

So I am at some place with a normal (direct) internet connection and want to go through a remote network (my work) where I need a proxy to access the internet. Thus, I need to configure also a proxy ...
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23 views

Cannot connect to VPN ubuntu 14.04

I'm using hide.me I followed the tutorial, but I cannot connect to the vpn. It shows up in the menu, but I cannot select it, it just does nothing. I think it should be common sense to allow for an ...
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27 views

15.04 ASPIRE 5750g WIFI connected but doesn't work

I have a problem with my PC, it is connected via wifi but the browser doesn't load web pages. With Windows 7 the problem persists, so it is maybe a hardware problem. How i can check this? Other ...
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28 views

WAN over wifi and eth to LAN

I have a USB Network card (TP link 722n) in my system. It has been recognised by the system. I do need to connect to a remote network over wifi and access internet. SSID:WHATEVER WPA2 ...
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46 views

new install 15.04 now lost wifi, connects but no ping. also gobi not enabled

toughbook cf19 mk3 xubuntu 1504 64bit worked on wifi for a week then lost it. gets IP etc. but no ping not even to local address except local-host. also since upgrading from 1404lts Gobi has never ...
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21 views

scripts in if-up.d not executed when ppp connection is created

I have a simple script "test" in /etc/network/if-up.d directory. The script contains below commands. It creates a empty text file, whenever an interfaces changes state from down to up. #!/bin/bash ...
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52 views

changing the priority of network interface

I want my ppp0 connection to have higher priority over wlan0. I added following lines to /etc/network/interfaces file. iface wlan0 inet dhcp up ifmetric wlan0 20 ...
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21 views

Why can't Ubuntu find my network card?

I'm running Ubuntu 14.4 and have been for quite a while. Today I had to upgrade my processor to something with more cores. I swapped out the processor but when I tried to bring my machine back up, ...