Managing and using network connectivity on a Ubuntu system

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why newly created vm using pxe boot is not listing in the maas

I am using MAAS. MAASRC and MAASCC in different nodes. And I have created new VM using PXE boot. But the newly created VM is not listing in the maas. What should be the issue with this. When I try to ...
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6 views

Xenial Server is not quite working with 802.1x port-based authentication

Ubuntu server 16.04 with kernel 4.4.0-22. Cisco switch C3750 with 802.1x port-based authentication. Everything went fine until one day, our radius server died. When radius server was unreachable, the ...
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29 views

dsl problem in ubuntu 16.04 (how to fix) [on hold]

i have budgie remix 16.04 :https://budgie-remix.org/ i tried the dsl connection setup what i did in last ubuntu releases but in ubuntu 16.04 the dsl does not work . the (sudo pppoeconf) is not an ...
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5 views

Troubleshoot XYMon Client not reporting

So I am new to XYMon, tried installing it on CentOS first as that is the top linked guide in the XYMon installation main page, but that was a nightmare. Also it uses Ubuntu 12.04 LTS (Precise ...
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20 views

Windows 7 File Share

I'm having issues trying to access my Windows 7 Share. I've read a LOT of thing on the Internet but nothing seems to work. I CAN access those folders with a Windows computer, but NOT with my Notebook ...
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1answer
25 views

SSH tunneling with relay and dynamic IPs

I am trying to achieve a vnc connection through ssh tunnel from a computer on a private network, and to another one on another private network, using a public server as relay. It can be graphically ...
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1answer
28 views

Wireless not working on Pavilion x360-Convertible, running 16.,04

I have a wireless problem with my HP-Pavilion-x360-Convertible, with a clean install of 16.04. When I click on the wireless on/off button in network settings, it always flips back to 'off'. The ...
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15 views

OpenVPN Import Problem

i had a strange problem when i try to use vpn first i tried to use tunnelbear vpn it succeeded but it caused that the network isn't working and i had to disable it then i tried to use finchvpn by ...
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1answer
60 views

No WiFi or Enable WiFi option after restart Ubuntu 16.04

Please help me troubleshoot this WiFi issue with my laptop. I have a Dell XPS L521X running on Ubuntu 16.04 LTS. My WiFi card is Intel Dual Band Wireless-AC 7260. My WiFi would work normally, but on a ...
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1answer
31 views

How do I get static IP working?

I have two PCs running Ubuntu 16.04 (one 32bit one 64bit) and a old TRENDnet TW100-S4W1CA router. The problem is that when I set the IPv4 address to "manual" the connections gets initialized just ...
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24 views

dont disconnect wifi when ethernet cable is plugged in

I'm using ubuntu 16.04 and I have a problem. When I plug in something the ethernet, wifi gets disabled, even if I don't use the ethernet port for the internet connection. Is there a way to fix this ...
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10 views

USBIP Server Setup Ubuntu 16.04 (Desktop)

So, appears as though I need some help here, as I am not getting this right. I've installed usbip on my clean ubuntu 16.04 test bench, however I'm having no success in setting it up. When I run ...
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103 views

16.04 LTS slow boot

I've upgraded to 16.04 LTS, booting now lasts 3min 14.784s instead of 25s. Startup finished in 3.973s (firmware) + 3.060s (loader) + 7.361s (kernel) + 3min 388ms (userspace) = 3min 14.784s ...
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16 views

Terminal fails to connect to a proxy server

I am trying to connect to the proxy server of my university. I have successfully logged in to proxy via firefox but when trying to use ftp or wget I get the following error: Resolving ...
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2answers
201 views

wifi problem on ubuntu 16.04..!

I have installed Ubuntu 16.04 and and there is no sign of wi-fi, no on/off indicator I have seen all the solutions on internet: how to handle wi-fi problems, but none worked for me. I have HP ...
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30 views

BCM43602 - bluetooth not working - sees device MAC but won't pair

This is a new XPS 15 9550 with the BCM43602 (14e4:43ba), and I am running Ubuntu 16.04 LTS. When I try to use the standard bluetooth manager, it searches and finds a device with a MAC (but doesn't ...
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47 views

WiFi Not working in After Installation in ubuntu 16.04

all I am facing a problem with my wireless. When I tried Ubuntu 16.04 Live, Wireless was working fine, but after installation Wireless is not working, My Machine in HCL ME (i3). The Machine has ...
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14 views

Lose mount with external folder

I have a project that run in a virtual linux server, when a user upload a file, the server store it in a folder in other windows server. To connect the server I had modify the /etc/fstab file: ...
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14 views

wifi not working. Asus x550c ubuntu 14.04

some outputs: sairam@sairam-X550CC:~$ lspci -nnk | grep -iA2 net 03:00.0 Network controller [0280]: MEDIATEK Corp. MT7630e 802.11bgn Wireless Network Adapter [14c3:7630] Subsystem: Foxconn ...
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74 views

Ubuntu 16.04 connected to WiFi, no Internet

I just did a fresh install of Ubuntu 16.04 over the weekend. My family had to reconfigure our gateway and router setup since then, and in so doing I lost all Internet connection on my computer. ...
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2answers
51 views

sshfs giving “remote host has disconnected”

I am trying to mount an sftp connection into a folder using sshfs with the following command which throws an error. ~$ sshfs admin@example.com:/ testfo remote host has disconnected The same error ...
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12 views

System Wide Proxy Setup - Must Or Optional

I would like to understand few things about system wide proxy on ubuntu. When a system wide proxy is set from network settings, does all applications (regardless from user) use this proxy or can ...
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8 views

Sharing Tor socksport via wired ethernet connection?

Using Ubuntu 16.04 on both machines. I've been able to share my VPN IP between devices with an ethernet cable. The host running VPN and Tor: IPv4 Settings: "Shared to other computers" IP Address: ...
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1answer
58 views

Unable to run ifdown eth0 && ifup eth0

Joining our Ubuntu farm to a windows domain and after adding the DC's IP to /etc/network/interfaces, I try to bounce the interface as I've done on other Ubuntu servers and it errors out. ifdown: ...
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22 views

How to control startup options of dnsmasq?

I'm on Ubuntu 16.04 Xenial and Network Manager started dnsmasq for me with these options: ~/ ps awux|grep dnsmasq nobody 2649 0.0 0.0 54488 3588 ? S Mai23 0:00 /usr/sbin/dnsmasq ...
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2answers
33 views

eth0 not working anymore after trying to set static ip

Hi I tried to set up a static ip and have lost the ability to use eth0, I can see that it is there but disabled, tried the edit with the auto eth0 and DHCP but to no avail, been trying all sorts of ...
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9 views

maas: ntp/named creating massive logs

I've just installed on 14.04 (Version 1.9.3+bzr4577-0ubuntu1 trusty1) and am starting to adapt nodes to be recognised by mass so they can be commission). However gigantic logs are being created, 25GB ...
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19 views

How can outgoing REST API requests be captured? (with request details)

Are there any tools to capture outgoing REST API requests (HTTP) that can show the request details (headers, body, host)? I've been trying to do it with httpry and tcpflow but I can't get it to work. ...
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18 views

Ubuntu 16.04 wired connection keep disconnecting

My network connection is switching off every several minutes. Output of lspci -knn | grep Eth -A2 00:19.0 Ethernet controller [0200]: Intel Corporation 82566DM-2 Gigabit Network Connection ...
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16 views

Imac 5,2 freeze with lubuntu 16.10

I have an intel dual core Imac 5,2. I installed lubuntu 16.10, but sometimes it freeze! Maybe is the video card? Searching on google I find this: If the output from this command: lspci -nnk | grep ...
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27 views

Firewall with ability to block manually temorarily ip addresses, ports?

I have made a DDoS detection system that gives me info about malicious IP addresses and ports need to be blocked. Does anyone knows good solution of firewall, allowing me to do that. More automated ...
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31 views

ethernet connection not working in ubuntu 14.04

I changed my OS yesterday (scientific Linux->Ubuntu) I removed scientific linux completely There was no problem in connecting to internet before but as soon as I switched into Ubuntu, ethernet ...
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28 views

cannot access the wifi

I have installed Ubuntu 14.04 LTS on my laptop. Under the networking menu at the top, it is not showing any WiFi options. How can I get Wifi working in Ubuntu 14.04 LTS?
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1answer
26 views

Unable to Connect to Internet, make Command Not Found, and cannot install my drivers

Ubuntu 16.04 xenial - Minimal server - fresh install from USB - Eee PC Asus 1005PEB I can't get online. I think I need drivers because: ifconfig shows inet addr:127.0.0.1 All pings result in: ...
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55 views

Ubuntu 16.04 LXD Openstack Network

I have installed Ubuntu 16.04 on 4 Nodes, Installed Openstack Mitaka, one node as compute, running nova-lxd. After installation, I can login to the dashboard, create a new instance, using LXD as the ...
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1answer
15 views

pinging from GNS3 router to Ubuntu bridged network and vice versa

I have installed Vmware on Ubuntu Server and created multiple VMs and connect them to different VMnet adapters. Actually I created 30 VMnet on the server. So I have the physical network adapter in ...
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2answers
26 views

Configuring Ubuntu as internal network router

I am configuring an internal network using Virtual Box and 4 Virtual Machines. I have configured all the interfaces and messed a bit with IP Forwarding and IP Masquerade on Host which would be the ...
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25 views

Qualcomm Atheros QCA9565 not detected by ubuntu 16.04 Dell Inspiron

Purchased Dell Inspiron and I can't get the network card to work. The network card is picking up SSID but fails to connect to any, so I'm wondering if this is maybe an issue with my router? Output of ...
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12 views

Ubuntu 14.04.4 LTS: Firewall - block countries

I'm having trouble with my VPS. IPs from both China and Russia is trying to brute-force my VPS (not like there's anything interesting), and it's annoying. I'd like to ask, if there's any way I can ...
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21 views

kubutnu xenial (16.04): No wireless on lenovo Thinkpad E145

I have installed xenial on three generations of Thinkpads (T43, T510 and the above mentioned E145). In the first two cases, wireless started out of the box marvelously. On E145, however, it does not, ...
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1answer
53 views

WiFi too slow compared to cable internet. Ubuntu 14.04 Intel Wireless card

First I'd like to say that I have searched a lot and tried many things to solve my problem. But nothing seems to work. I have a Dell laptop Inspiron-5448 with Ubuntu 14.04. It is new and Ubuntu came ...
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1answer
23 views

Changing Network Adapter in KVM

I'm building a server to be deployed on a KVM host in the near future. I'm building the machine on my personal laptop in KVM using the virt-manager GUI for KVM. To begin with I kept most of the ...
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1answer
12 views

Sync specific folder between two Ubuntu machines when connected to the same LAN

I have two Ubuntu machines, a laptop and a desktop. What I wish to do is, to create a folder in both machines at paths 'path1' and 'path2'. I want to set up sync between the two folders whenever they ...
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44 views

WI-FI not detected after installing UBUNTU 16.04 LTS 64 bit

I had purchased a new laptop HP 15 AC179 TX which having radio card(RTL8723Be) & as per my plan I was install Ubuntu 64 bit 16.04 LTS on it but after installation I was found my wifi is not ...
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Connects to wifi but no internet access

Wifi is fine though, since my other ubuntu notebook connects without problems. ethernet is working aswell (thats how im postinng here) Ping: snckrs@sculptor:~$ ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) ...
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1answer
29 views

Ubuntu server - cannot set static ip

I have set local ubuntu 16.04 server yesterday. I configurated static IP and everything was good. I was able to connect to the server. Today I travelled to city, where i stydy. The server couldnt work ...
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13 views

Network links disappeared in Select Destination or Filename windows

Not very long ago, the links to my network drive disappeared in the pop up destination windows on all of my Ubuntu 14.04 PC's. Networking still works fine, Nautilus still sees the net drives and it's ...
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50 views

Ubuntu 16.04 bootup very slow because of network service

My desktop have a boot slowed because of the Network service startup. I think its a problem on the system because in the 15.10 it wasn't happen. The time after the unit is active or started is ...
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37 views

How to make packet injection working with wireless chipset broadcom 4365 in ubuntu [closed]

I am just trying to see hack to hack my own network to do that i am using airmon-ng tool and my wireless chipset model is broadcom 4365 with default "wl" driver installed and when i tried to ...
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42 views

WiFi password can be entered but won't connect with no error message

I recently installed Ubuntu 16.04 alongside Windows 7 on my HP Envy m6-1125dx laptop and installed all available updates. It has a built-in wireless card (Ralink RT5390R 802.11b/g/n) and available ...