Managing and using network connectivity on a Ubuntu system

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Ethernet dose not connect automatically

I'm beginner in Linux and I install Ubuntu 14.04 LTS. I need to connect VPN automatically, so I choose the "Automatically connect to VPN when using this connection" tab in network connection but after ...
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1answer
65 views

hostname.service is masked

I've searched around and can't seem to find a way to unmask hostname.service. I edited hosts and hostnames to include my own host and FQDN. I'm not sure if hostname.service ever worked in the first ...
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2answers
77 views

No internet connection after software update on Ubuntu 14.04

I am using ubuntu 14.04 for quite a while and never had this problem. But last time that I updated it, it lost its internet connection. It is a PC and I am just using wired connection. I saw several ...
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1answer
22 views

ifconfig fixed ip address is lost after a while

I'm using ubuntu LTS14.04 and I want to make some lab experiments with two computers and a switch. Both computers are configured to start with DHCP but I want to assign two fixed ip addresses to each ...
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1answer
13 views

Network Hardware Not Recognized After Imaging

Problem: After imaging a machine with Lubuntu 14, the machine can't bring up/find eth0 and wlan0. It says Error getting hardware address for "eth0": No such device Clue: I solved this issue last ...
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1answer
70 views

Ethernet shows disconnected yet cable plugged in

I have a Latitude E7240. Network cable is plugged in but Ethernet Network disconnected. Have tried all kinds of things with blacklisting, driver search, work off the install USB but to no avail. Here ...
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1answer
27 views

Network Manager Prompts for VPN Login Password at User Login

I'm running 16.04 with Ethernet connection set to automatically connect to my VPN at start up in Network Manager (NM). However, the NM password window appears at the Ubuntu login screen asking ...
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0answers
7 views

How to attach an ENI to an ubuntu EC2 instance in AWS?

I have an Ubuntu EC2 instance with a private IP address 10.0.3.164 on the default network adapter eth0. I would like to attach to it an additional Elastic Network Interface (ENI). I have successfully ...
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35 views

DNS problems in Ubuntu 14.04

My current /etc/resolv.conf looks like this: nameserver 192.168.1.254 nameserver 10.23.0.1 search home My basic problem is that I want to use different nameservers, such as Google's nameservers, ...
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27 views

How to Mount Western My Book Live Duo

I have been reading everything I can to do this and have come to the conclusion that there are too many things I don't understand to make sense of it so finally asking a question. Goal: I want to ...
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0answers
42 views

Wireless connection active but no internet

I have Ubuntu 16.04 installed on a Asus F555LA-AB31 laptop. I can access the internet just fine on my home wireless network, however I can't seem to connect to the internet on the wireless network at ...
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27 views

14.04 Problewm connecting to local server - help?

Got crouton running on a chromebook and ubuntu running on a different box on the same home network. Trying to connect to the ubunut box from the crouton box through Nautilus - Connect to server. ...
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42 views

14.04 Wifi and ethernet disappeared on reboot, havent returned

My internet was lagging so I rebooted my modem and PC. When it got back, no WiFi or Ethernet. Was using Intel 7260 BT wireless chip for past 2 years, never an issue. Checked cable, router, swapped ...
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33 views

Routing between two networks

Network #1 is my network. 192.168.1.0. The gateway is 192.168.1.1 Network #2 is another network I want to access. 192.168.2.0...gateway 192.168.2.1 On the Ubuntu server that has two interfaces and is ...
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1answer
33 views

Just finished installing Ubuntu and cannot get any wifi. What can I do to fix this?

From looking online, it seems that other ubuntu users have a drop down menu on the top right with available wifi networks, but I don't. Right now I'm using an ethernet cable and the only available ...
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2answers
48 views

Ethernet does not work with a specific cable (Ubuntu 15.10)

I have to use a static IP configuration. I just got a new ethernet cable, and it worked fine for a while. Then it stopped detecting the ethernet connnection. I mean, it would tell me that I'm ...
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2answers
95 views

Internet connection suddenly missing in Ubuntu 14.04

I have a dual-boot ThinkPad Edge E330 laptop (Ubuntu 14.04 /win10). I have had so far no problems with Ubuntu. This morning I started my session and I noticed that the laptop was not even trying to ...
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1answer
31 views

keyserver timed out with add-apt-repository

I cannot add-apt-repository because the Ubuntu keyserver times out: $ sudo add-apt-repository ppa:git-core/ppa -y gpg: keyring `/tmp/tmpxzw15cei/secring.gpg' created gpg: keyring ...
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14 views

Ping to wireless router goes slowly up, then suddenly down

This is probably yet another issue with wireless drivers. I'm using a Fujitsu Lifebook A512, and this problem only happens on Ubuntu on wireless networks (it doesn't show on Windows, or when pinging ...
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0answers
41 views

I lost my wireless connection after an update to 14.04

14.04 had been working well for about a year. My wireless connection went down after an update. netspec showed the local loopback working, but no network connection. the connection was still there ...
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0answers
54 views

WiFi problem with Atheros device

I have installed Kubuntu 16.04 on my new notebook, but after install the wifi was not working. So I used lspci command and it returned: 01:00.0 Network controller: Qualcomm Atheros Device 0042 (rev ...
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45 views

Autoconnect to vpn Ubuntu Gnome 16.04

After upgrading to ubuntu gnome 16.04 network manager doesnt let me select "automatically connect to vpn" in the options. This was an extremely useful feature. Also, is there any way to disconnect ...
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1answer
52 views

Cannot install ubuntu 14.04 packages

I have tried to install network-manager because after 13.05.2016 updates broke it. Anyway, there is few issues. I have downloaded from another computer network-manager ...
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0answers
43 views

Sudden network failure!

I don't remember doing something faul but my machine is out of network both wired and wireless. I went through different discussions and after changing things, I feel I damaged it more. On command: ...
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1answer
70 views

Problem connecting laptop (Ubuntu 14.04) to WiFi network

Okay, so I recently downloaded Ubuntu and installed it to run alongside Windows 7. When I started Ubuntu, I could not find my WiFi network in the network list. My ISP (Internet Service Provider) is ...
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1answer
80 views

How to get my disappeared network connection to work again?

I am using Ubuntu 14.04 LTS on a laptop. Suddenly my Network possibilities have disappeared. (No network connection and no show of the network icons or in control panel) The laptop has a fixed ...
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13 views

Lubuntu on Asus vivoPC vm62?

I installed Lubuntu 16.04 on an Asus vivoPC vm62. I experienced 2 problems: Network is slow! (WLAN & LAN) My "old" PC and my company laptop hook up to the same WLAN/LAN are up to 10 times faster ...
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0answers
10 views

How to run CADO-NFS on a single virtual machine and multiple virtual machines

I got the following problem about the address of the host when I tried to execute on single virtual machine and also on multiple virtual machines. Info:root: Using default parameter file ...
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0answers
27 views

Network Manger doesn't start automatically

The regression in the last network-manager update (may 13, 2016) also affected me. I've managed to fix it by downgrading, but since then every time I turn on or restart the computer, there is no ...
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1answer
45 views

How can I block outgoing network traffic, based on useragent?

What would be the simplest method to ensure that all outgoing traffic matching specific user agent is blocked? To avoid XY problem: I want to disable “A new version of Sublime Text is available, ...
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2answers
268 views

Ubuntu 14.04 — The system network services are not compatible with this version

I have read all related questions but none of those answers worked for me. So the problem is that on my ubuntu 14.04, there isn't network connection and no network icon either. I have used ubuntu over ...
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1answer
43 views

Is there a USB wifi adapter that reliably works with Ubuntu? Including suspend/resume

TL;DR Is there a usb wifi dongle for ubuntu that works reliably, including suspend/resume support? I've used Ubuntu since around version 12. There wireless support has always been funky but I could ...
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36 views

qualcomm atheros 168c0042-rev-30

i can't get my laptop WiFi up and running with ubuntu (Kernel 4.4.0-22-generic). I have a Qualcomm Atheros 168c:0042 pci adapter. Things I already tried: The solution from this question ...
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18 views

Reverse proxy to ESXi

I have an ESXi server working and I can manage my machines by accessing the esxi_ip/ui. In parallel, I have my Ubuntu Server working with my domain and a valid SSL certificate working. So, what I ...
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0answers
19 views

Why device can't see another device on Adhoc network?

I setup AdHoc network on Ubuntu with 1 computer and 2 UDOO boards(small pc with ubuntu) on wireless. Then I give them static IPs. When all device are together, I can ping each of them from each ...
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23 views

Using VPN tunnel for subnet traffic only with Cisco AnyConnect Secure Mobility Client

I try to connect to a network by vpn. The client is a "Cisco AnyConnect Secure Mobility Client". Installation was no problem, access to the new network works as well. Sadly, using this client seems to ...
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0answers
17 views

ssh ipv6 - Connection timed out

I'm having "connection timeout out" problems connecting to a VPS through IPv6. sshd_config is ok, netstat tells me so: # netstat -natp | grep :22 tcp 0 0 0.0.0.0:22 0.0.0.0:* ...
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0answers
214 views

WiFi Stopped Working After Updates on 5/13/16 (Xubuntu 14.04.4 LTS)

I used my desktop normally on Friday, but when I booted it up on Saturday (yesterday), there was no WiFi icon in the icon tray and there is now no network connection. I believe I installed some ...
1
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1answer
18 views

Unknown host even though Avahi is installed and running

I'm running a 16.04 server on an old iMac. My network connectivity is up and running and avahi-daemon is installed, but I cannot ssh to my machine without explicitly using the ip. In spite of all ...
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1answer
44 views

Ubuntu Server 12.04 LTS: Can't manage to run my wireless connection

I've just installed Ubuntu Server 12.04 LTS and during the installation, I've set up SSID and WPA key and the installer seemed to accept it. However after booting the system there is no connection. ...
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2answers
48 views

Network is not auto-enabled after start up

After normal system start no network is detected. If I plug off ethernet cable and insert usb wi-fi, no new device is detected either. However if I run system in recovery mode and enable networking ...
0
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1answer
26 views

USB Tethering - I have a ping to google, but browser can't open web sites

I use Blackberry Classic Tethering to connect to the internet, which works fine to a certain point. I can ping google and download html-files with wget, but I can't open webpages with any browser ...
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2answers
124 views

Unable to connect to the internet, Network menu has disappeared

I installed Ubuntu 14.04 LTS on Lenovo Think-pad laptop some months ago. Everything has been working fine until yesterday. Don't know whether something hasn't updated correctly. Very new to Ubuntu and ...
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1answer
17 views

Unable to access some websites

I came home for the vacation and realized that I am not able to access certain websites from my laptop. I can't access coursera.org, amazon.in and more sites. I was able to access them when I was in ...
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2answers
110 views

Share a printer connected to Ubuntu 16.04 with machines on local wi-fi network

I just did a fresh install of 16.04 and am having trouble sharing my printer with other machines (Ubuntu, Windows and Android) over my wi-fi network. In earlier versions of Ubuntu it was pretty ...
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0answers
24 views

cannot see wlan0 after changes in firmware

I am using ubuntu version 14.04.1 in my Asus s550CM laptop. I have replaced my wifi card to intel WiFi Link 5300 (802.11n). I have to install modified hardware for this and this is the link for that ...
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0answers
5 views

Why mrtg didn't send snmp request? [closed]

After installing mrtg with apt-get,I try to capture snmp packets with wireshark,but nothing was captured. By the way,snmpwalk works fine. I'm kind of confused with mrtg,it seems that it doesn't send ...
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2answers
149 views

WiFi speed of other devices connected to router slows down when disconnecting Ubuntu laptop

I have a router, Laptop with Ubuntu (my laptop), Win10-laptop (brother's), iPhone. All devices are connecting to router's Wi-Fi. The normal speed is 16-20 mbps! When I was using Win 10 like my ...
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0answers
31 views

Intermittent lost in network connectivity (log files?)

Perhaps this is unrelated to the latest upgrade to 16.04, but since upgrading, my computer has been inexplicably losing network connectivity (cabled network, not wireless). So, if I boot up, it works ...
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1answer
17 views

SECURE LAN for File Transfer, 3 machines, upload/download from any machine to any machine

I would like to be able to access 3 different Ubuntu based machines securely, both upload and download, all on the same LAN. I need either written resources or step-by step instructions to setup all ...