Managing and using network connectivity on a Ubuntu system

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How to release an IP address and renew from the commandline?

I am using modern versions of Ubuntu that use network-manager, and I would like release and renew my network settings through the commandline. In the olden days when Ubuntu used the interfaces file, ...
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1answer
11 views

Who calls /etc/init.d/networking

Since this script is used to bring up/down network interfaces. I looked through files under /etc but could not find any script called it. So how the network interfaces are brought up on booting? BR, ...
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5 views

KDE5 Not Connecting to L2TP VPN

KDE is refusing to allow me to connect to the server, saying that org.freedesktop.NetworkManager.l2tp is not installed. Logfile: May 5 11:54:12 BlackHawk NetworkManager[7978]: <info> ...
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1answer
8k views

How do I get wireless Wake-on-Lan work with an Intel 5100 AGN?

How can I make a wireless wol with Intel PRO/Wireless 5100 AGN from a hp laptop ?
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1answer
16 views

How to get ethernet in Ubuntu 14 / Virtualbox 5.0.20 / Windows 7 to work

To start my latest and greatest programming project... I updated VirtualBox to 5.0.20 (because the nag splash is very annoying). Then I downloaded a fresh 14.04 from osboxes.org Then, I ran it and I ...
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1answer
29 views

Ubuntu 14.04 Network Driver

Complete beginner trying to connect to ethernet or wifi with Intel DH61AG mini pc running Ubuntu 14.04 Used "lspci | grep -i net" to find Ethernet Controller: Intel 82579V Gigabit and Network ...
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1answer
4k views

How to make ubuntu gateway?

i am new on Ubuntu. i want to make a gateway. i have some 25 systems and switch but i don't have any server. i want to setup a system as a gateway system and want to make a firewall. i want that ...
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1answer
14 views

Missing “/etc/udev/rules.d/70-persistent-net.rules”

I recently installed Ubuntu Server 16.04 onto a new hard drive. I had to install it while connected via USB on a different computer (due to the installer not able to detect a keyboard). I attached ...
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10 views

14.04 LTS: Mobile broadband “connected” but network unavailable

As of a software update 2-3 days ago (let's say after May 1 but before May 5), network via broadband doesn't work. Connecting to mobile broadband lights up the correct LEDs on the dongle. ifconfig ...
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5 views

Networks show “Ethernet Network () Device Not Managed” (Xubuntu)

Could not find this question, so apologies if it is a duplicate. I am running Xubuntu on a Lenovo Yoga 211 as my only OS. I do not have an Ethernet port, and as such have of course never tried to ...
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PLZ HELP !! connection to wifi network with my asus x205T

Hellow there i Have installed the ubuntu Linux on my Asus X205T, using un usb wifi, (every things gone ok) in the next step i tryed to install the wifi network driver (it's worked but 100%) wget ...
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1answer
5k views

How to release all IP addresses in my LAN network

I have ~100 clients on my LAN. When they get turned on simultaneously many seem to get assigned the same IP addresses. - I use dhcp How can I get them get ubuntu to release all the currently ...
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How to share files from Win7 to remote Lubunto desktop server

Could you kindly recommend a tutorial or the right software for sharing files between a computer Win 7 OS and a Lubuntu Desktop OS server? they are not on the same network. Thanks B
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6answers
16k views

How do I keep my Wifi from dropping out?

I have a System76 Gazelle, gapz8, running Ubuntu 14.04. My wifi keeps dropping out at random intervals. I have a new router, so I don't believe that's the issue, but I am in an apartment building, so ...
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14 views

I cannot connect wirelessly on Ubuntu 16.04 [duplicate]

I just installed Ubuntu 16.04, and surprisingly, it turns out I cannot connect wirelessly on it.I have no idea how to fix it. I did some search on Google and found some commands that provided some of ...
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2answers
148 views

How to remotely access website in my virtual machine?

I have installed VirtualBox and a guest machine with Ubuntu. From my host Ubuntu, I can browse to 192.168.56.10 and see webpages inside my guest Ubuntu server (and I can ssh user@192.168.56.10 into ...
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1answer
4k views

Two NIC's - one for Internet, other for LAN

running 13.04 32bit. I'm trying to accomplish something that im sure is simple. I have two NIC's installed on my PC. eth0 - connected to office network with static IP. eth1 - connected to Internet ...
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1answer
46 views

No network after upgrade to 16.04

I upgraded my server to 16.04 from 14.04, which in turn was upgraded from 12.04, all using the command line do-release-upgrade. This is a server build, with absolutely no GUI. It runs apache2, bind9, ...
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24 views

Wifi Stop after 30/40 minutes in ubuntu 16.04

I have a DELL Inspiron 15 5000 series laptop running ubuntu 16.04. When I first boot this machine everything was fine although gnome software give me some trouble to installing 3rd party software. But ...
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1answer
342 views

Ubuntu 16.04 - wifi network list has disappeared

I was using wireless internet with no issues, apart from last night where I kept having to enter the password to connect to a new network for the first time, even though the password was correct - but ...
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1answer
130 views
+50

16.04, Network stops working

Ubuntu 16.04. Network (both cable or wi-fi) stops working after a certain amount of time. This is my /var/log/syslog after the last appearing of the problem davide@brenna:~$ cat /var/log/syslog Apr ...
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3answers
20k views

ifconfig eth0 eth0: error fetching interface information: Device not found

I'm new to Ubuntu. In my system WIFI is working fine but Ethernet is not working fine. ifconfig -a lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 ...
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2answers
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Wifi Problems with Intel Centrino Wireless-N 2230 on Ubuntu 12.04

So I have searched high and low and nothing seems to work. I bought this Lenovo p500 IdeaPad, got rid of Windows8 and threw Ubuntu 12.04 on here. My Centrino Wireless-N 2230 card seems to be giving ...
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1answer
10 views

Does HP DeskJet Ink Advantage 3635 WiFi (F5S44C) work with Ubuntu 16.04LTS?

I'm thinking to buy a wifi hp color printer, I like the HP DeskJet Ink Advantage 3635 with Wi-Fi (F5S44C) + USB cable model. Does it work fine with Ubuntu 16.04 LTS ? Does WiFi work fine? Does scan ...
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Does LXD support tenant network?

Currently docker seems not supporting tenant network. So I have a question here, does LXD supports tenant network?
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1answer
211 views

OpenVPN connection established, but no internet access

So I recently set-up OpenVPN server on my box using this guide. I can successfully connect to the OpenVPN server but there is no network access. I've tried looking this up but none of the fixes I've ...
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14 views

How I reset wifi driverson Debian?

I am having such a problem - wifi, absolutely sponteneously, does not let traffic in. At first it is characterised by B/s fall to 2-3 and then down to zero. Actually, I had this problem for quite a ...
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1answer
289 views

Can't connect to smb share after upgrade to Ubuntu Gnome 16.04

After upgrade to Ubuntu Gnome 16.04, I can no longer access my networked media tank's smb share. It's an old (2009) Popcorn Hour A-110. When I connect to server smb://192.168.0.5 in nautilus, I get ...
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1answer
136 views

Problem when setting 802.1x authentication in Ubuntu 16.04

I live in a campus and we need to set certificates and private key in 802.1x tab to connect. The problem is that when I try to add the private key, it says: "Unencrypted private keys are insecure" and ...
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1answer
19 views

Network with Windows 10 Computers

When I want to network with my window 10 network it asks for my user name etc., but whatever put in here it will not connect. Any suggestions? Garry
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1answer
48 views

Changing Network Interfaces name Ubuntu 16.04

I tried to change network interfaces name on this new Ubuntu 16.04 LTS version but doesn't have the /etc/udev/rules.d/70-persistent-net.rules . So, I tried to use /lib/udev/write_net_rules but it not ...
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42 views
+150

Lego Mindstorms EV3 software cannot find brick via WiFi

My Lego Mindstorms EV3 software cannot find the EV3 brick via WiFi. The strange thing is, it works in a fresh install of (X)Ubuntu in Virtualbox on this computer, same version. I think the problem ...
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1answer
11k views

Setting up VPN connection with Cisco AnyConnect - The AnyConnect package on the secure gateway could not be located

I'm trying to set up connection via VPN. I need to use Cisco AnyConnect. First I was getting error Cerfitication validation error. Then I added certificate (.pfx format) through firefox. Then When I ...
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1answer
107 views

Ubuntu 16.04 Ethernet Help

So, I have recently installed Ubuntu 16.04 (Server). And I am having issues getting it connected to the internet on my router. ifconfig -a: enp8s0 Link encap:Ethernet HWaddr bc:5f:f4:ac:9d:cc ...
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3answers
1k views

Wifi doesn't work after suspend after 16.04 upgrade

This particular version of the "doesn't work after suspend" came after upgrading to 16.04. It seems that the upgrade includes a Wicd applet (added to Metacity Classic Gnome task bar alongside regular ...
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2answers
9k views

SSH to network alias ssh_exchange_identification: read: Connection reset by peer

New install: Ubuntu 14.04.2 LTS (GNU/Linux 3.16.0-45-generic x86_64) I have no problem with SSH to the DHCP address .22, but when I try the alias address .80 the connection is reset by peer. I've ...
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1answer
339 views

Set static IP Ubuntu 16.04

I am a new with Linux, having years experience with Windows servers/desktops and am having issues setting a static IP. I am using a method used for previous versions of Ubuntu, which doesn't seem to ...
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5 views

Ubuntu 12.04 dropping LAN connection

I have a Ubuntu 12.04 machine that has two Ethernet interfaces, both are static. eth0 is sitting on a network like: xxx.xxx.169.xxx with a 255.255.255.0 mask It's static address is: xxx.xxx.169.14 ...
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0answers
10 views

Ubuntu server does not process RADIUS authentication requests

I am running freeRADIUS on Ubuntu and authentication is not working. The packets are arriving at the server but the server seems to not process them at all. Please note I am not a Linux guy; I'm a ...
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0answers
18 views

Wireless LAN worked in 14.04, doesn't on 16.04 even with the proprietary drivers

The problem is, that the proprietary drivers, that worked with 14.04, no longer work for Ubuntu 16.04. I did not upgrade, I did a clean installation.sudo lshw -C network shows that my WLAN card is ...
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1answer
97 views

rtl8723be drops wifi connection on hp pavilion notebook ubuntu 16.04

I have recently bougth a HP Pavilion Notebook and performed dual boot with ubuntu 14.04 lts and noted that no wifi networks on first boot. I've searched a lot (really) and did lots of stuff (installed ...
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1answer
164 views

Samba problems with recent update: cant access servers, keeps asking for credentials

I'm using Ubuntu 15.10. I work in an office of about 10 computers (all of them running Windows 7). I had a problem with my computer so I had to re-install Ubuntu from scratch (same version, same ...
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1answer
37 views

Simple Samba File Share

I'm trying to setup a simple ubuntu (14.04 lts) file server to allow win xp and osx machines on the network to have read write permissions to the share without having to authenticate with a password. ...
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0answers
19 views

How to change 2G to 3G of modem

I am using a Micromax MMX377G 3G modem on ubuntu 14.04 LTS. But my problem is that everytime I connect the modem to my pc it only connects via 2G mode and I can view 'EDGE' word with operator name in ...
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2answers
1k views

Clone GIT from SAMBA network share

Has anybody successfully cloned GIT repository to Ubuntu from a SAMBA network share? I have access over file manager and can ls over command line, but cannot clone Also, in git cola, qgit and gitg I ...
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0answers
8 views

Pulic wifi dongle unable to authenticate

I have a problem with authentification to public unprotected non encrypted wifi network(its similar to networks you find at hotels - it routes you to a web page where you enter password) that I am ...
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0answers
30 views

Only use /etc/network/interfaces for configuring network

I'm comfortable using the classic /etc/network/interfaces, and since I've had bad experiences with Network-Manager in the past, one of the first things I do when installing a new Ubuntu system is to ...
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0answers
22 views

Using Sierra MC7304 LTE modem with QMI

I am using a Sierra MC7304 LTE modem on my ALIX-Board with Ubuntu. As far as I understand there are two ways to use it: creating a ppp connection via /dev/ttyUSB2 using e.g. wvdial (not suitable ...
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1answer
69 views

Ralink RT3290 Wifi doesn't work on Ubuntu 16.04

I am having huge trouble with ralink rt3290 wifi card. I have installed fresh ubuntu 16.04 everything works except the wifi. My wifi disabled by default and whenever i try to enable it, nothing ...
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2answers
124 views

Ubuntu 14.04 LTS wireless (suddenly) not working

Suddenly my wireless connection stopped working. Please find the contents of my wireless-info.txt file on this link: http://pastebin.ubuntu.com/12367337/ Thank you in advance for your help.