Managing and using network connectivity on a Ubuntu system

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How to setup Ubuntu router with 2 WAN interfaces

I have an ubuntu router with Ubuntu server 14.04 installed. Physical network interfaces are: eth0 - local LAN eth3 - WAN (internet) wlan2 - local wireless LAN (AP) This is my ...
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2answers
19 views

How do I use Juju in a restricted network?

I got a shiny new server in the lab and I want to use Juju. I install juju, and juju-local just fine. The juju bootstrap completes successfully but when I attempt a deploy a charm I get an error: $ ...
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Slow Internet Ubuntu 14.04 Intel 7260 [on hold]

I installed Ubuntu 14.04 on my PC (Dual Boot with Windows 8.1), and I noticed that the Internet connection is very slow in Ubuntu. However, other devices work very well. I searched and tried so many ...
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17 views

`nmcli connection up uuid my uuid` successful but quickly failed

When i use gui(network manaager > vpn connections > select my vpn), there is nothing problem, but when i use nmcli connection up uuid my uuid, it succeed too but quickly exit following is my log in ...
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20 views

How to see log of nmcli “Network connection failed :unknown reason”

My country has network block, so when i use "nmcli connection up uuid", it always show "connection establish successful" and then show "Network connection failed :unknown reason:" right now, I find ...
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4answers
61 views

Dell Inspiron 5150. Installing 12.04 and having some problems

The laptop I am trying to convert to ubuntu had XP Pro sp3 on it. It worked fairly well. I was able to use my wifi and get on the Internet and do all the things a PC can do. I decided to convert ...
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1answer
60 views

14.10 Windows home network connection keeps asking for password

I have a home network on a HP Media Smart Server with Windows Home Server OS and a HTPC with Ubuntu 14.10. Everything is working great with the exception that I cannot access my home network. When I ...
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35 views

No network/internet connection on Ubuntu 14.04 laptop (only at home!!)

To keep things short, I have read a lot and tried a lot of solutions to no avail. Especially this, which is a very similar case, but to no avail. I can't connect to my WiFi network at home. I can't ...
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23 views

Unable to connect to Internet on Ubuntu

I am connected to my university's wifi on my host machine (Windows 7) and I am unable to connect to internet on my guest ubuntu which is running on virtualbox. I do not know what the problem is. ...
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20 views

Can't reach my server from another network

setting up my own server lead me to a problem, that i can't solve on my own. My server is a 'Ubuntu-server 14.04.1' and is located behind a 'FR!TZBox 7390'. My ipv4-adress is projected on a ...
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45 views

Can't delete trash files on USB stick

I'm having trouble deleting files that magically appeared on my USB stick. The folder was a trash folder which I have never seen before which also contains files that are in my trash as well. I ...
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45 views

How to enable 5GHz on Netgear A6200

I'm having issues running my Netgear A6200 at 5GHz. It seems like it isn't picking up wireless .ac at all. At the moment only 2.4 GHz will work. Also, I have an orange light instead of a blue light. I ...
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78 views

wifi issue on Lenovo Ideapad Yoga 2 13 running 14.10 dualboot Win 8.1

Windows 8.1 and Ubuntu 14.10 dual boot Intel N7260 WiFi adapter Driver module: iwlwifi Kernel version: 3.1.0-25-generic firmware version: 25.222.99.0 I'm getting a solid WiFi connection on Windows ...
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1answer
46 views

How to set proxy server to work from the command line [duplicate]

I have set up my proxy server so that it works through the browser ( in firefox: edit > preferences > advanced < network < settings ). I also got it working from the command line ( in system ...
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1answer
18 views

Fail to resolve ip address

I tried to diagnose internet problem myself ifconfig: eth0 Link encap:Ethernet HWaddr f8:a9:63:3f:9e:97 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 ...
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37 views

Is my server being SYN flooded?

Please can someone help me with the output of netstat -s This is what I found: Tcp: 1634 active connections openings 7 passive connection openings 2 failed connection attempts 115 ...
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1answer
26 views

IP configuration for multiserver

I have currently a server with IP 127.0.0.1 and Client with IP 127.0.0.2. I want to create a middleman-server in between them which should also work as a server. How should i assign IP to this new ...
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9 views

IP Forwarding in a subnet

So here's my question sorry if I can't give any more details not that much knowledge about it. What I am trying to do is: Switch a connected to PC 1 and as well to the internet Switch b connected to ...
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13 views

DNS Cache server on Ubuntu 12.04

I have configured a Caching and Forwarding DNS server on Ubuntu 12.04 and after whole process things were good. The server was working properly. I tested it using dig command. After rebooting the ...
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2answers
45 views

Restricting internet access of some client systems of LAN to a few websites using ubuntu gateway

How to limit internet access of most systems in my LAN to a few websites and block all the other websites? Also want to bypass that restrictions for some systems. All systems have static IP address ...
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41 views

eth0 is not working ubuntu 14.04

I am really new to Linux. I was really enjoying it but later on my eth0 interface has gone after I updated the kernel. my wireless is also a pain for me. it works only for a few minutes and then stops ...
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15 views

Network status icon vpn start / configure not working

i just installed Ubuntu 14.04 and installed my VPN. everything was fine yesterday, yet today i can't click on the wifi icon in the task bar and select my vpn, or the configure vpn options. when i ...
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67 views

14.10 Cannot ping www.google.com

I have a relatively fresh install of ubuntu 14.10. I am currently not able to ping www.google.com but I can successfully do ping 8.8.8.8 and I can successfully ssh into the machine from another ...
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2answers
169 views

Unbearably Slow Network Performance in Chrome/Firefox (14.04)

I've been tolerating miserable performance on my Ubuntu desktop for some time and am finally taking the time to look into it. Symptom: Using a web browser (Firefox or Chome; doesn't seem to matter) ...
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2answers
26 views

Can I use iptables to forward vm guest requests to host

This is a bit complicated, but I have a Windows 7 vm (virtualbox) and I need create a persistent connection to the MySQL instance on my host machine. Binding... I can do this using mysql address ...
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1answer
42 views

How could I configure and properly create a WiFi hotspot in a big corporate lan?

I've went through some tutorials regarding how to build a hotspot under Ubuntu. My Ubuntu is connected in a big corporate lan and will post settings later. $ sudo add-apt-repository ...
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62 views

Unable to connect to wifi or bluetooth on 14.04

I've been using Ubuntu for a long time, no problems until a few days ago. I was installing the Arduino IDE through the Ubuntu Software Center and suddenly the installation got stuck displaying ...
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10 views

After Restarting server No-Ip 2 DUC have problem

After restarting the server my no-ip2 duc client not working i check proces with: sudo noip2 -S 1 noip2 process active. Process 6277, started as noip2, (version 2.1.9) Using configuration from ...
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1answer
29 views

netgear a6200 error on modprobe ndiswrapper

I'm trying to get a Netgear A6200 wireless card working through USB and I'm getting an error I don't understand. I'm using 14.04 64-bit. I've scoured the net trying to find stuff, and there's ...
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12 views

Server IP Returns “Unable To Connect” In Browser

I've got it set to Bridged Network. It starts up perfectly and when I type in ifconfig it gives me the IP 192.168.1.9 which, when I put it in Firefox, gives me Unable to connect Firefox ...
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20 views

Network configurations and client/server operating system

I am working on a project for my operating systems class. I'm having difficulty fulfilling 2 requirements for it. It asks for 5 network configurations for Ubuntu Gnome and what client/server operating ...
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21 views

How to fix USB modem LTE mode only 62 bit received and no more?

Found no answer over the Internet. As I understand 62 received bits are used to set up the connection. My USB modem ZTE MF820D in LTE mode keeps sending data but with no answer (no download at all). ...
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1answer
21 views

Defining multiple interface definitions in /etc/network/interfaces and /etc/network/interfaces.d

Is it possible to have an interface definition for say eth0 in /etc/network/interfaces.d/eth0.cfg and a section in /etc/network/interfaces? If this is possible, is there a precedence for one over the ...
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10 views

problem updating user space IEEE 802.11 AP and IEEE 802.1

while updating software on Ubuntu 14.02 LTS using Software Updater, I am having problem. There is 62.6 MB of update available, but after opening the Software Updater window, it shows all updates ...
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26 views

Cannot access any ports outside of local network

Object: Ubuntu 14.04 machine with ownCloud, XBMC (media server) and command-line Transmission installation (for remote downloads). Problem: I configured all ports and added them to my routers Port ...
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31 views

have access to ipv6.google.com but not other ipv6 address

Briefly speaking, I have access to http://ipv6.google.com or some other ipv6 website. The ipv6 test website http://ipv6-test.com/ also says that I have both ipv4 and ipv6 connections. The strange ...
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1answer
20 views

can't impliment firmware from command

Forgive my ignorance of command line utility, as I'm new to Ubuntu Actually I have to install a Tool already developed for WiFi application which give output of received packets. In that process i ...
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Problem With Ubuntu Server; Gives Weird IP And IP Timesout In Browser

I've reinstalled the server OS a few times in a VM and every it launches fine and you'd never know anything is wrong until you put in ifconfig and it spits this out: inet addr:10.0.2.15 ...
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13 views

Opening shared folders on my network

I have, in the past been able to set up network shares in Nautilus and could navigate around my shared network folders. Since Ubuntu 14.04 I set up the network shares in nautilus, and they appear to ...
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1answer
36 views

How is a device managed when not in /etc/network/interfaces on Servers?

On my Ubuntu Server, 14.04.1 LTS, I have not specified any devices in /etc/network/interfaces, yet they (multiple ethernets) work completely as intended with static IP. I have heard from multiple ...
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1answer
41 views

Getting I.P address of Ubuntu Server running in Virtual Box

I have installed Ubuntu Server 14.04.1 LTS in VirtualBox. I would like to get the I.P address, and according to http://askubuntu.com/a/430855/192526, you do so with ip addr show It says inet ...
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2answers
76 views

After installing Ubuntu the Broadcom network adapter is not functioning. How can I fix this?

I installed Ubuntu 14.04 LTS on an old Acer Aspire 3680 last night. Previous to the install everything worked fine. I was able to connect to Wifi. Since the install I have not been able to. All I ...
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11 views

Cant login in to Ubuntu with “net use” even though can ping Ubuntu computer

I'm trying to log in to a server with Ubuntu from a command shell on my windows 7 laptop by typing net use Y: \170.212.71.135\serverName password /USER:username /yes I get the following error ...
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1answer
74 views

Can't connect to a network at all

I'm running ubuntu 14.04 LTS on my computer with 7.8GiB Memory, Intel Core i5 CPU 760 @ 2.0GHz x 4 Processor, Gallium 0.4 on AMD REDWOOD Graphics, OS 64bits and 40GB of Disk. Recently my network ...
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1answer
31 views

WiFi temporary username settings with PEAP/MSCHAPv2 on 14.04

I am setting up a computer for our grad students at my university. I have one standard-user login for all of them to use to make things a bit simpler for them. I am trying to find a way, however, to ...
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90 views

14.10 NVIDIA driver makes internet very slow after install

I have Ubuntu 14.10. I was using my PC long time, when suddenly I found out one problem- it was cause of Noveau driver did not support GLSL(still doesn't). It also has very bad performance. I have ...
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32 views

slow download rate

when I want to download a file on ubuntu 14.0.4, the download rate is about 10kBps, but when I try to download from the same server with the same DNS settings and from the same network on win8 my ...
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1answer
31 views

Description of Network set up / Admin/Standard user

I am new to Ubuntu and I am learning to install Ubuntu 14.0. How do you describe network set up? How to set up an administrator and standard user?
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15 views

Packet Loss with 12.04 LTS

I have Ubuntu 12.04 LTS installed on a dell server which is connected to WiMax router by a cable, I have a tracking system for cars installed with more than 300 tracking devices connected to this ...
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37 views

My Ubuntu 14.04 WiFi connections cannot be switch on, and the network controller AR9485 is missing

Presently, my wireless device cannot be switched on, although I have checked in the BIOS carefully. I also noted that the Network controller/Qualcom Atheros AR9485 cannot even be detected at all. ...