Managing and using network connectivity on a Ubuntu system

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how to Set up a network in 14.04

I have installed 14.04 Ubuntu in my VM, after log in, I cannot connect to internet....either WiFi or Ethernet, tried all possibility PC configuration Dell inspiron, chipset Intel i5...
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14.04 LTS Ubuntu wifi stops working and disconnects after few minutes from rebooting

I installed ( ubuntu 14.4 ) 2 days ago (it's important to mention I'm still a beginner). On the first day my home WiFi worked fine, but on the second day and until now my WiFi stopped working and if ...
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Can't reach server on eth0 when connected to OpenVPN on tun0

I have a desktop (Utopic) and a home server (Trusty) connected to a home router. The router is set to forward some ports to the server. When I connect the server to an OpenVPN provider (on tun0 ...
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How to configure Ubuntu Server to point to my registered website's domain?

First off, I'm aware that it's a possibly a duplicate, but what happens is that no matter what I try to google, read, and setup, I'm just unable to fully understand how to do it. Why? Let's take ...
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how to connect to gateway using Knoppix

I have been trying to connect my pc to my router. When I ping it, I get "destination host unreachable". I've statically assigned ip. Included below are the results of my diagnosis. If anyone can ...
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1answer
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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
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How to fix gsm modem LTE connection lacking download?

I've recently bought ZTE MF820D USB GSM modem especially for the LTE feature, although that's the only mode I'm having problem with. EDGE and UMTS are working fine, but after a while the mode is ...
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1answer
27 views

Linux Noob - Ubuntu 14.04 - No Internet Access (Detects)

So i've never used Linux before and have installed Ubuntu 14.04 onto an HP EliteDesk G1 PC. Everything is swish and working well apart from my network, it's plugged into a router that's got an ADSL ...
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Cant connect to other networks

so i have a hp laptop that runs on ubuntu. It connected with no problem to my home wifi, but i tried using it at work and it wouldnt connect. I can click on the network desired, but absolutely nothing ...
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What is wrong with my network card? [on hold]

I installed Ubuntu 14.04 LTS in my laptop. It can connect the Internet in my working space in Ubuntu OS, but it cannot in my residence. I don't know why. In windows system, the laptop can connect the ...
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snmpwalk -Of does not display textual OID

We are having problem running this snmpwalk on Ubuntu server 14.04. snmpwalk -v 2c -Of -c public localhost Or snmpwalk -v 2c -Of -m SNMPv2-MIB -c public localhost Both of them do not display the ...
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Can't reach my cloud from internet

I installed Openstack on a VM with Ubuntu, now i want to reach my cloud from internet, someone can give me some tips? I'm not so pro on network managing.
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1answer
23 views

12 ubuntu PCs in LAN : None getting connected via Samba

Well i know this is not a new question to this community but the problem is surely very new I have got 12 pcs in our office which is ubuntu based. All of them are connected via lan wire or wifi. ...
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68 views

inconsistent network connection (wired and wireless) on Dell Precision-M2800

The connection (wired and wireless) is lost randomly on my Ubuntu machine. I do not see the same problem on a Windows-7 machine that I have or on the mobile devices. To recover the connection, I ...
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Cannot access some smb share

I was working in windows domain from local Ubuntu account and accessed all windows shares by typing every time my windows login\pass Then I joined my machine to our domain and started to use my domain ...
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Ubuntu doesn't connect to ethernet, it works only on second connection

I have ubuntu 14.04 running on a lenovo w540 About a month ago suddenly I had no ethernet connection, At the begining it worked only if I type sudo dhclient -v eth0 I played a little bit, and re ...
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Reliance Auto Login Help

i want to run this script https://github.com/pteek/reliance-auto-login-script but i get this error in lubuntu " Traceback (most recent call last): File "./reliance-login.py", line 27, in ...
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Unstable wifi problems with PAU06 usb internet and ubuntu 14.04

I'm using the Panda Wireless PAUD6 usb internet adapter and I'm having problems keeping a consistent connection. It seems to go out frequently and sometimes I have to remove the adapter and plug it ...
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ubuntu guest network issue

On my Mac host, in Virtualbox->Settings->Network, I chose Bridged Adapter and en1 Wi-Fi (Airport) interface, check marked Cable Connected. On the ubuntu guest, eth0 is assigned ip address in the same ...
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1answer
181 views

Updating kernel version from 3.2 to 3.8.0 wired connection not working in 12.04(LTS)

After updating kernel version from 3.2 to 3.8.0 wired connection not working in 12.04(LTS) $ uname -r 3.8.0-030800-generic $ ifconfig -a eth1 Link encap:Ethernet HWaddr 9c:2a:70:cd:f2:c5 ...
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2answers
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No Internet, but Wifi connection after Update to Ubuntu 14.04 (64-bit) from 13.10

I updated recently to 14.04 from 13.10, everything seemed to work fine, but after the second reboot the system connects to the network, but no internet is working. I tried already plenty of solutions ...
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How to get hostname from DHCP server

I want Ubuntu to get hostname and DNS name from DHCP client. Default installation of 11.10 does not do that. Update: same question asked and Unsolved
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1answer
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asus x550c wifi not working in ubuntu

I have ASUS X550C laptop i have installed ubuntu 14 but wifi is not working it is not showing wireless option in the network settings product: MT7630e 802.11bgn Wireless Network Adapter .plz help i ...
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Cannot Connect via Wireless Router, but can connect via Ethernet

Hope someone can help. I just installed Ubuntu 14.10. Everything is okay, except it does not recognize any wireless networks. I can connect with no problems via wired Ethernet. I did install " ...
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IBM T500 pro/wireless 5100 AGN wireless card blocked ath5k

First, I am going to reinstall and use the try than install etc. I still would like to understand why this happened and how to maybe fix it for the future. When I was testing out what versions of ...
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2answers
60 views

Ubuntu 14.04 can't detect wireless card

I'm running Ubuntu 14.04 on lenovo yoga 13. Previously my wireless was working correctly, but only after running a script to fix the wireless: cd /opt/rtl8723au-master make clean make sudo make ...
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132k views

Command for determining my public IP?

If I check with google, I can see my public IP. Is there something on the Ubuntu command-line which will yield me the same answer?
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6k views

Very slow, intermittent WiFi speeds with 14.04 and Intel PRO/Wireless 5100 AGN [Shiloh]

I did a fresh install of Ubuntu 14.04 LTS on the harddisk of a Lenovo Y650 Ideapad laptop. The wireless adapter is an Intel PRO/Wireless 5100 AGN [Shiloh]. Initially I could not connect to any ...
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Ubuntu 14.10 - Lenovo E420 - Wireless is not working

Earlier till ubuntu 14.04 the wireless was working for lenovo thinkpad E420, in ubuntu 14.10 it stopped working. Earlier for ubuntu 12.10 Modified /etc/modprobe.d/blacklist.conf and put an entry near ...
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1answer
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/var/log suspicious entries

For fun I tailed /var/log/auth.log (tail auth.log) and there were many of the following: sshd[16225]: Received disconnect from 203.100.83.32: 11: Bye Bye [preauth] The ip appears to be from ...
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1answer
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is it possible to access internal hosts from ssh terminal using ssh tunnel from windows directly?

I have a Ubuntu server that I do web development on at work. At work I use a Windows PC but I am on the internal network so I can Putty into the server to change code. I access the pages it serves ...
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Wifi gone after installing backport of ath10k

......Hello I got a situation when I tried to install the ath10k driver for a 802.11ac supported wireless card by installing the backport releases. My system is ubuntu 14.04, and my current kernel ...
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Ubuntu 14.04 Internet connection sharing questions

first up im pretty new to ubuntu/linux in general. I have a ubuntu 14.04 server with 2 nics in it. eth0 (with subnet 192.168.0.0) is connected directly to my router for internet and eth1 (192.168.1.0) ...
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1answer
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Mount Windows File Share and acces them on ubuntu 14.04 server

I have created a windows file share windows server 2012 on one of the data centre and i want to access the file share in another data centre on ubuntu server 14.04 I am able to ping both the machines ...
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Connection to tor network and proxy server fails after vpn connection or running a local server

I am on Ubuntu 14.04. I am facing this weird issue which I never faced before. I am a university student. I have multiple proxy servers to which I connect for internet. Everything works fine when I am ...
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How to dynamically enable and disable ipv6 on an interface

How to dynamically enable and disable IPv6 on an interface so that it gets link local address when enabled? I have tried: sysctl net.ipv6.conf.all.disable_ipv6=1 to disable IPv6 and sysctl ...
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0answers
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Cant have both wireless and wired connections enabled at the same time

I have installed Ubuntu 14.10 recently and I have a problem with accessing my storage server via eth0 and connecting to Internet via wlan at the same time. I have to disconnect one of them to use the ...
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2answers
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How do I configure global internet connection on Ubuntu 14.04?

My broadband connection is OK !, but Firefox showing me message after browsing "If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web" ...
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How do I configure firewall or proxy setup on Ubuntu 14.04?

I can't access Firefox browser and with Terminal command line problem detected proxy. How I can solve this ? . see screenshot
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Creating and Sharing an encrypted drive and be able to access it from a network

I hope that question made sense! Here is what i am trying to do. i have an Ubuntu 14.04.1 server/htpc/desktop. I use it as cloud storage and to stream to my tablets. It has two physical drives and i ...
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Facebook not working in all browsers in Ubuntu 14.04

I can't load facebook in all of my browsers in Ubuntu 14.04 I don't know where the problem occurs. I already changed IPv4 to 8.8.8.8 but still doesn't work. And also I could access on facebook only ...
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1answer
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How do I use Juju local with a firewall?

While using ufw (Uncomplicated FireWall) and I noticed that the local juju machines were stuck in a pending state. $ juju status environment: local machines: "0": agent-state: started ...
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Wireless incoming data stalls for 6-8 sec every 2 minutes

I use Ubuntu 14.10 on a desktop and my wireless adapter is TP-Link TL-WN722N. My internet connection seems to work fine (it uses all available bandwith which is ~6-10Mbps). Although every 2 minutes, ...
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1answer
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Ubuntu 14.04 LTS identifying Wireless/Lan but will not connect

Just installed Ubuntu 14.04 LTS on my newly built machine. TP-Link TL-WDN4800 PCI Express Wifi Adapter Gigabyte 970A-D3P Mobo, MSI R7 265 GPU, blah blah blah. Anyway. When I first booted, Ubuntu ...
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3answers
34 views

How can I un-register then re-register NICs without rebooting?

I have an Ubuntu VM that's using iptables to forward packets. After each reboot, the maximum throughput of the forwarding is significantly different, so I'm trying to narrow down which step is ...
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Openstack: access project from internet

I'm trying to connect my private Openstack Cloud to a CLoud Management Platform (Ecmanagement). I need the Api User, the Api Key, the Tenant Name and the URL of my cloud. Now, im a novice on both ...
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Ubuntu UI Toolkit's interaction with my device fails due to SSH protocol capabilities mismatch

Testing my device's (nexus 4 running latest from devel-prosed) connection from SDK->Options->Devices->Test I get: Connecting to host... SSH connection failure: SSH Protocol error: Server and client ...
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How to configure Avahi network on Ubuntu 14.04?

How to configure Avahi network on Ubuntu 14.04 ? anyone help me . I can't access more Internet connection, access few internet Connection, See this image
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Ubuntu 14.04 How to forward LAN network through wifi hot-spot?

I am trying to share my LAN connection via eth0 through a wifi hot-spot (wlan0). I used hostapd to start the configuration but all the tutorials that i have found need a dhcp server installed. Can ...
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Couldn't Configure SNMP in Ubuntu

I'm trying to monitor Ubuntu server 12.04 via Solarwinds sever which requires to enable SNMP on the Ubuntu. I update the following line in the /etc/snmp/snmpd.conf : rocommunity secret 10.0.0.0/16 ...