Managing and using network connectivity on a Ubuntu system

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NAS ip's showing up twice (DUP) and NAS not accessible

we have two NAS backup servers here for holiday photo and video and such things... both are fujitsu NAS. One is a Q800 and one is a newer Q802 series. We have actually the problem that the Q802 shows ...
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31 views

avahi local domain not working in ubuntu mate 16.04

I used to use ssh with hostname.local but now it has stopped working. Is this a problem with all ubuntu installation or just mine? avahi-browse -all displays no output
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0answers
20 views

I recently installed Ubuntu 12.04 with Crouton on my Lenovo N-21 Chromebook and can't get Wi-Fi to work

I really like the design of the desktop and I like how easy it is to access applications and all, I just can't get Wi-Fi to work. When I go to Network Manager, a message appears that says "The system ...
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48 views

Problem in the command “service networking restart ”

when I want to restart my network , I find this answer : Job for networking.service failed because the control process exited with error code. See "systemctl status networking.service" and "...
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0answers
23 views

I don't have any wireless connection [duplicate]

Yesterday I downloaded Ubuntu 16.04, and installed Ubuntu alongside Windows 10. But now I see I don't have any possible wifi connection and ethernet. Don't I have drivers or what? My wireless card: ...
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18 views

Can not Connect to a specific network

I have Ubuntu installed on my HP laptop alongside windows 7. My problem is that I can not connect to the network at work neither by wifi nor by Ethernet cable. However, I manage to connect to the ...
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0answers
24 views

Accessing Ubuntu server installed in VM from Host Win 10

I tried to search for this but i am not able to find it out, may because of my less searching skills. please help me with this. I Installed Ubuntu Server 16.04 LTS in VMPlayer and which is an 64 bit ...
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3answers
213 views

No network, no usb after kernel update in 14.04

Today I did a regular update for my Ubuntu 14.04 installation on my Dell XPS 13 and the update included a new kernel (I guess it was 3.19.0-65). I noticed that the wireless stopped working after the ...
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16 views

Connected To Wifi But Symbol Showing Ethernet And Different Names Showing For Same Wifi Network

I have Hp 15-s005tx Laptop With Dual Booted Ubuntu 16.04 And windows 10. I have 2 problems I have wifi connected to a router but the names of the Network are more than 1. Example - "MyName" is SSID ...
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14 views

How to set up two specific network interfaces for UDP connection?

I would like to make a QT application for a specific PC connected to two other devices using ethernet cables. How to set up correctly to be able to read and write data to every direction? Details: ...
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1answer
113 views

Ubuntu 16.04 Wifi networks grayed out - Dell Latitude E5470

I have seen many posts about Wifi problems in various versions of Ubuntu but non of the responses seem to be applicable to me. This is the output of rfkill list: 0: hci0: Bluetooth Soft blocked: ...
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26 views

Privacy error:Your connection is not private

I am on Ubuntu 16.04.Since I came to this hotel,I am using wifi and have problems to connect to my facebook account.I have tried with Chrome,Vialid and Mozzila and I got all the time Privacy error ...
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36 views

How Is it possible in Ubuntu 16 to configure a proxy server without terminal.And if possible,how? [closed]

Is it possible in Ubuntu 16 to configure a proxy server without terminal.And if possible,how?
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1answer
61 views

Problems with Netgear A6210 High Gain Wi-Fi USB 3.0 Adapter on Ubuntu 16.04

I've downloaded driver from here: https://github.com/jurobystricky/Netgear-A6210 And I experience occasional connection loss and most of the time low signal strength but, while on Windows 8.1 none of ...
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0answers
12 views

paros invalid certificate

i am trying to use Paros in Ubuntu,to learn about networking and try some http spoofing and see how it works, i normally use chromium but in ubuntu chromium seems to use global proxy settings and i ...
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0answers
18 views

Ubuntu 14.04 (DB with W10) Ethernet will not attach to network…until it does

So I have been having network problems since I configured Grub to manage my dual boot machine. Ethernet will not configure dhcp automatically when Ubuntu is booted up, and setting the IP manually ...
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20 views

Where's my second virtualbox network adapter on 16.04?

Note this works with Trusty Tahr 14.04, but when running Xenial Xerus 16.04 server inside Virtualbox with two network adaptors, adapter 2 won't work. When I run ifconfig I only see the first one, ...
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0answers
14 views

How to write wvdial config file using modem log obtained from windows

I have usb modem that I am still not able to use for establishing the Internet on ubuntu 14.04 LTS but it works in windows by creating new dial up connection .Can anyone tell how to write wvdial.conf ...
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20 views

Problems with SSH Proxycommand

i have some problems with the ssh proxycommand. The authentication on the proxy works fine, but when i want to login to the remote-host it fails. The problem seems to be, that the proxy tries to login ...
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0answers
42 views

Wifi (through usb wireless adapter) does not connect automatically

I am using Ubuntu 16.04. I used to be able to connect (automatically on start-up) to the Internet using a USB wireless adapter. One day, after start-up, Ubuntu said that it experienced an "internal ...
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0answers
20 views

How to improve WiFi signal strength from PC end

My WiFi signal strength gets weak and connection keeps dropping as soon as I go even 5 feet away from the router. I am sure it is not the issue with the router because: 1. Other devices work just fine....
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2answers
102 views

Complete loss of networking in new Ubuntu install

I've been setting up a new install of Ubuntu on a Raspberry Pi 3. I started with the image from here, updated and upgraded all packages, upgraded the distro, and upgraded the rPi firmware. All was ...
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1answer
24 views

anybody know how to disable connman?

I have a BeagleBone running Ubuntu. connman is getting in my way and I'd like to disable it. I deleted /etc/rc*/*connman, but somehow it's still getting started. (Why am I trying to disable it? ...
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1answer
25 views

Can't ssh nor ping into and out of the system but internet is working

I'm new to Ubuntu. I just got a Odroid-C2 and I plan to use it as a Node.js server. I'm using the official Hardkernel Ubuntu Mate Image (should be version 16 or 14.x), and I need SSH Access to it. Not ...
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1answer
84 views

Ubuntu 16.04: WiFi BCM43142 doesn't see nearby networks

I've just bought an Acer ES1-521 laptop. First thing I did was to boot into the BIOS setup, change boot order to USB DVD-Drive first and install Ubuntu 16.04 from a DVD (everybody does that, right?). ...
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0answers
27 views

Ubuntu 12.04.5 LTS unbearably slow after entering passphrase for WiFi

I've installed Ubuntu 12.04.5 LTS on an (quite old) IBM ThinkPad T40. Connecting to the internet using LAN works perfectly fine, but as soon as I "Enable Wireless" in the Network Manager, choose a (...
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3answers
67 views

Ubuntu 16.04 - OpenVPN

I have one question. In my Ubuntu desktop 16.04 when I start one OpenVPN connection I lose internet connection. I think it's due to network I connect have a proxy and I have not configured. Is there ...
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1answer
29 views

OpenVPN in LXC: Failed to set devices.allow

I have been trying to get OpenVPN working in a LXD-managed LXC container on Ubuntu 16.04. I have added the tun device to the container config via lxc config edit container and it is properly created. ...
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16 views

Losing wired network connection once a week

Since upgrading to 16.04, my linux box at work, which runs day and night, loses connection to wired network occasionally, typically once per week. Usually when I am far away and try to connect... ...
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0answers
18 views

macchanger on xubuntu 16.04 broken. Fix?

Since the upgrade to 16.04 this command: sudo service network-manager stop && sudo macchanger -r wlan0 && sudo service network-manager start returns: [ERROR] Could not change MAC: ...
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26 views

Where should I report issue related to DNS failure

Recently I've got DNS issues on my Linux box (Xubuntu 16.04) when I open a new webpage it return DNS error (that name can't be found) and after the second the page appear. When I refresh the browser I ...
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18 views

Creating Hotspot on Ubuntu VM with Windows 10 host

I have a bit of a messy setup that I need to get working. I am using virtualbox on windows 10. This machine is connected through a wired connection. On this windows machine, I also have a usb wifi ...
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43 views

Problems with tg3 ethernet adapter after 16.04 upgrade

After doing a clean install of 16.04 Server on my HP ProLiant MicroServer Gen8 server I have problems with random disconnects from the network. The server will run fine between a few hours and more ...
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0answers
27 views

Ethernet suddenly broke down

I have a laptop (Thinkpad p50s) with fresh 16.04. There was Ok during month, but today ethernet suddendly broke down without any reason. Wi-fi is working. Also I turn off ipv6 but without success My ...
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0answers
20 views

DHCP server isn't responding to DHCPDISCOVER request [closed]

I am using a linux distribution security onion as a virtual machine over windows 7 host via virtual box. This vm is unable to get any ip address from the dhcp server. That problem results from ...
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0answers
22 views

lose internet after pinging laptop from another system

I have connected two laptops through ethernet, call them laptop1 and laptop2. laptop1 has internet(by connecting to wifi) and shares it with laptop2. both have static ip's on ethernet interface....
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0answers
39 views

How to solve “cannot get hardware address” error , Ubuntu 16.04 32 bit

I have just installed Ubuntu 16.04. When I try to connect to my ISP server(wired) from my terminal, it's gives a error cannot get hardware address. The error log is- 2016-07-13 06:09:21 [4354] ...
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1answer
33 views

Can I send requests to another PC? [closed]

My situation: I have one internet connection thus one home account. On my LAN there are a few PC's, a console and a server. My provider's router is setup that requests from outside go to my server's ...
0
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1answer
30 views

Can see Ubuntu server on the network, but cannot connect

I can see my Ubuntu machine on the network, but I can't connect to it. This is the second time this has happened in the last couple of days. Last time, I rebooted the server and changed the network ...
2
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1answer
35 views

How to change naming scheme for network interfaces of an already installed Ubuntu 16.04?

I want to change naming scheme for network interfaces for the classic one (eth0, eth1, etc). Is it possible to an already installed Ubuntu 16.04 machine?
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0answers
33 views

Can not connect to mobile broadband even when modem is detected

I am using Ubuntu 14.04 LTS and when I connect the Linktop U100(CDMA2000 1X USB modem) the "New Mobile broadband connection" alongwith "Enable mobile broadband" appears in network drop-down menu but ...
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0answers
16 views

WIFI connected- Internet cuts off

Okay I am new to linux, ive tried 2 wireless cards both work and after some usage they'll just randomly stop working but the computer will still show as connected. I unplug, plug back in and I'll be ...
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0answers
9 views

ODD DNS ping results

Can someone help me understand this: When I ping a host, it resolves and then I start getting icmp responses from another host? $ ping 7-hostA PING 7-hostA.mydomain.com (192.168.2.87) 56(84) bytes ...
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0answers
28 views

Share a folder on an external hard drive between two Ubuntu 16.04 machines

As far as linux based systems go, i was born about three weeks ago but by no means am I a computer illiterate. I want to share a folder on an external hard drive physically mounted on an Ubuntu 16.04 ...
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0answers
15 views

Can't switch on Wireless adapter

I have Ubuntu 14.04. I was able to access WiFi and bluetooth until recently. Few days back when I started my system, the WiFi was switched off. I tried to turn it back on. But, could not. Ethernet ...
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0answers
19 views

Cannot ping myself (127.0.0.1) or ping outside or ssh into my ubuntu 12.04 server

My server was working fine a few days ago. I was able to SSH in. Today all of a sudden I can't SSH in, but I'm able to access the console directly in order to troubleshoot the issue. I tried ...
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0answers
36 views

wifi - rtl8723ae - ubuntu 14.04 - issue with reconnection

I can't reconnect to some WiFi here are some info that could be useful: sudo lshw -C network -numeric *-network description: Ethernet interface produit: AR8161 Gigabit Ethernet [...
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38 views

Not getting internet connection

When I login, I am not getting an internet connection. Only after running network-manager restart internet connection is established. Any idea why this is happening? My etc/network/interfaces -...
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49 views

wifi disconnected after reboot, ubuntu 16.04

I installed Ubuntu 16.04 on Lenovo G580 and first time I connected WiFi but after reboot I have got this popup disconnected - you are now offline Network. $ lspci -k | grep Net -A2 02:00.0 Network ...
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1answer
33 views

SSH : Could not resolve hostname 192.168.40.250:2080, Name or service not known

I just installed a centOS 6.5 web server on a VMWare. Now I' like to access it from my physical computer in order to use the LAMP stack i installed on it to host a web application am developping. But ...