Managing and using network connectivity on a Ubuntu system

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openstack: conifgure vm with static ip on eth1

I'm trying to create two trusty VMs with static IPs for eth1, but pings between the static addresses fail. Via havana dashboard, I created a network with a 10.16.1/24 subnet, disabled gateway, ...
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1answer
675 views

Ubuntu 14.04 Disable automatic network connection until after login

So I recently connected to my university's network for the first time using Ubuntu. After configuring it to correctly work with PEAP, it will now prompt me to login using my credentials on the login ...
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1answer
1k views

Wifi not working in ubuntu 14.04 all of a sudden

My wifi is not detecting any wifi connections although they are present. As soon as I start my system Network Disconnected notification shows up. But it happens to work sometime and it is quiet ...
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2answers
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Realtek RTL8723be Wifi and Bluetooth 14.04

I just installed the OS on my laptop and at first wifi didn't work. After connecting to ethernet and updating everything, the wifi is working. But it disconnects here and there and requires me to ...
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2answers
1k views

14.04 Desktop: Static IP is acquired, ping works, DNS does not

My question is very similar to this one: Can ping but no DNS I have setup a static IP on my previous Ubuntu versions - 9.04 and 12.04 - without issue. I have used an identical means this time as well....
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1answer
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Using Ubuntu 14.04 as router with iptables, clients can't go online. Probably DNS issue, iptables setting needed

CORRECTION 3: SOLVED! I needed to add the the official DNS server of my departement's VLAN as DNS to the clients. I've read through a large number of posts about iptables issues when using Linux as ...
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1answer
961 views

Installing Samsung network printer on Ubuntu 14.04

I am trying to install Samsung C410W printer on Ubuntu 14.04, however after 2 days of struggling any success. I tried to install it through "Add printer", through adding printer in CUPS and I tried ...
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1answer
274 views

Where does `resolvconf` gets the IPs of DNS servers from?

On a server machine, I have the /etc/network/interfaces file similar to: # The loopback network interface auto lo iface lo inet loopback # The primary network interface auto eth0 iface eth0 inet ...
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15k views

What do LISTEN and ports mean in netstat? [closed]

I have been monitoring my system lately and I have found some strange things are running on my system. Can anyone please explain what they are and why same program use several processes? Output of ...
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1k views

No internet via wifi/ethernet after 14.04 upgrade

I have just updated to Ubuntu 14.04 LTS on my laptop, and I seem to be having some internet problems. I have no internet connection through wifi or Ethernet, after both working in the previous version....
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1answer
566 views

network bridge not forwarding traffic from span port on router

I want to run several security network tools in LXC containers like ntopng, suricata, snort, etc. I hooked one of my server's NIC's up to a port that is spanned to my firewall... so basically this ...
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1answer
4k views

I cant access Ubuntu from Windows 7

I read and followed easy install instructions for sharing files with Ubuntu. I have three computers, Windows 7 64-bit home premium, Windows Vista and Ubuntu 14.04 LTS. My problem is that I cant ...
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1answer
3k views

Wake On Lan not working

I have been trying to get Wake On Lan to work on my Ubuntu server (14.04.1 LTS), which I have configured as a home NAS box. I have followed several tutorials to try to get this working, but for some ...
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0answers
165 views

I can not print on Windows 7 shared printer

For a while I can not print from my Ubuntu 12.04 64 bit pc on a Windows 7 shared printer. Before that everything was ok. The printer is HP LaserJet 1100. The error message is: "File "/usr/lib/cups/...
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2answers
7k views

Unable to connect to internet on hyper v Ubuntu 14.04

I have set up Ubuntu 14.04 on hyper-v in Windows 8.1. I also have an external network switch linked to Ethernet. The internet and LAN works fine on my host windows 8.1 PC. But I am not able to use ...
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2answers
297 views

How to get Linksys WUSB54Gv2 working with Ubuntu 12.04.5 (32-bit)

The older Dell tower (Dell Dimension 4600) that i'm using doesn't have Wi-Fi built in (duh) and Ubuntu will not accept my network adapter. I have another computer to download files to and use to ...
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2answers
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Unable to NFS mount from Ubuntu 14.04.1 LTS against QNAP NAS

Note, this is a cross posting question in the QNAP NAS community here: http://forum.qnap.com/viewtopic.php?f=35&t=96526&p=427018#p427018 Any comments and suggestions, as well as pointers to ...
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2answers
483 views

Is there a better way to programatically get the networking parameters from Linux OS?

I am writing some scripts which need to programatically get a lot of networking parameters from Linux OS. For example, the names of all network interfaces, ip address, netmask, MAC address. For ...
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2answers
858 views

Problems connecting to eduroam wifi - ubuntu touch

I am trying to connect to our university's eduroam wi-fi network with my Nexus 4 running Ubuntu touch (utopic latest build), but can't get past the first stage. I wonder if anyone can help please? I ...
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2answers
139 views

How do I know my MAC address? [duplicate]

how to check mac address of our system through terminal in ubuntu 10.04LTS ipconfig/all
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1answer
927 views

Unable to connect Internet to Xubuntu 14.04 with wired connection

Just installed Xubuntu 14.04 from usb, installed okay except that I cannot connect to internet. I'm connected via a Solwise Homeplug (Ethernet over wiring). Xubuntu says I have 'Wired connection 1' ...
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3answers
5k views

Getting URL of YouTube video with `youtube-dl` is slow, without downloading video

I want to get the URL using youtube-dl, and the "simulate" option -g that does not download the video. So I gave the following command: youtube-dl -g https://www.youtube.com/watch?v=k4JGSAmu4lg ...
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2answers
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Ubuntu 12.04 + Wifi not working

i'm having problems connecting over wireless. At the moment, I'm using wicd. It seems to get stuck on "Verifying AP association...". Without wicd I can get the connection up and ping the Net - but ...
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2answers
1k views

Adding a 'network' USB printer

I have a HP Deskjet 1050a printer, hence the 'network' in the title. Its a bog standard USB home printer. I have it attached to my router (has a USB port in it). I have got it connected and working ...
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1answer
5k views

cannot connect using L2TP IPsec VPN Manager 1.0.9 on Ubuntu Desktop 14.04

used Synaptic to install L2TP have checked the dependencies are installed too. but cannot connect to work VPN when i click connect Ubuntu reports error 410 $> sudo ipsec verify Checking your system ...
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2answers
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How do I get to work my Atheros AR9485 Wireless card in Ubuntu 14.04 LTS?

I've recently installed Ubuntu 14.04 LTS in my ASUS D550CA, and so far things have gone great. The only problem I've got is the Wi-Fi. It doesn't work. I've got an Qualcomm Atheros AR9485. I've ...
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Not able to get a wired/wireless connection using ubuntu 14.04 [duplicate]

I have a Dell Inspiron E1505 that was using ubuntu 12.04 with no problem after I made some changes to get wireless up and running. But after ubuntu 14.04 was installed from a DVD, the internet was ...
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1answer
759 views

how to set a static ip on ubuntu 14.04 which is runing on wmware workstation 10. [duplicate]

i configured master and slave setup. but some times after restart the machines wired ip address changes. how to set a static ip step by step. please help me thank you.
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1answer
302 views

Intranet LAN networking for office PCS

I am a Newbie in Ubuntu. I have 8 new PCs installed with Ubuntu 14.04, I am unable to do networking in them. I want to share files in all PC's Ubuntu to Ubuntu which includes sharing a drive and ...
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1answer
860 views

How to install spark in Ubuntu 12.04? [duplicate]

It shows error like file size is too large, I am using through my institution Internet connection its limited access. so I need help to how could install the spark??? My system is Ubuntu 12.04 32-...
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2answers
477 views

Install reliance Driver software in ubuntu 14.04

I'm Using Huawei ec 150 dongle. I need to install driver software It is quiet a big task for begineers in linux. So i took this matter over here. EDIT Output of lsusb Bus 001 Device 001: ID 1d6b:...
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2answers
24k views

How to configure a network printer in Ubuntu 14.04 [closed]

I have 2 printers on a home WiFi network that are accessed by 2 desktops running Windows. I have a new laptop on which I am learning/trying Ubuntu 14.04. How do I configure things to access these ...
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1answer
136 views

Internet not working (local network works) after upgrade to 14.04

I have an internet connection that works through a proxy that requires username & password. After online upgrade to 14.04 from 12.04, I am unable to connect to internet, pinging to popular sites ...
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2answers
204 views

I am not able to connect to wifi network

I had tried every code every idea every thing but I failed wireless driver Broadcom BCM43412, but when I checked pci-id it show not supported. my pci id is 14e4:4365 and chip id is BCM43142. I tried ...
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1answer
2k views

Wired connection cannot be established - no eth0

i am on ubuntu trusty 14.04, and i recently lost my wired ethernet connection for uknown reason. I get eth0 no such device and other related errors. I tried many solutions from other posts, and i ...
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Internet drops out when using shared hub or streaming media

Depending on the network I'm connected to my (wireless) internet will drop out every 30 seconds to every few hours. How often I drop out (seemingly) depends on the network, and the amount of traffic ...
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1answer
1k views

top like utility for network activity/ports by process

I'm looking for a utility to continuously monitor network traffic by process. Something like top but instead of focusing on CPU/memory, I would like to see TCP and UDP ports and throughput for the ...
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180 views

MacMini (running Ubuntu 14.04) loses wlan connection when uploading larger files (several 100 mb) via ownCloud

I installed Ubuntu 14.04 on an old MacMini with the intention of running it as a homeserver. Additionally I installed ownCloud and tried to sync some files both from a laptop running elementaryOS and ...
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1answer
550 views

Static IP breaks Network connection

I am somewhat new to Linux. I am setting up a Web server and installed Ubuntu server 14.04 on an vSphere ESXi 5.5 host. I am connecting perfectly fine to the internet when using DHCP but when I apply ...
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4answers
836 views

Can two PCs with Ubuntu share the clipboard buffer?

I need to copy text on the first PC and paste on the second. Is this possible?
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4answers
17k views

How to get Wifi working on Ubuntu 14.04 (Macbook Pro Retina 15 inch - 2014)

I just downloaded Ubuntu 14.04 on my Macbook Pro Retina 15 inch 2014 version using usb. My problem is I can't get the Wifi working. No wifi connections would display on the wifi menu. I've tried ...
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1answer
1k views

Unstable wireless Ubuntu 14.04

The internet connection is relatively stable however it seems to drop every few minutes for 10-20 seconds. Panda Ultra Wireless N Unstable Connection http://www.amazon.com/Panda-Ultra-Wireless-...
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Desktop Shorcut to dial a Mobile 3g Connection

Like in Windows, is there any way to create a desktop shortcut to dial a mobile 3g connection (I'm using Mate DE)? I use default Network Manager.
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1answer
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IP/PORT forward requests to another server

I have the following listening PORT:IP set up on my UBuntu server. 12.345.67.890:3636 It receives requests perfectly, however, I would now like to forward any requests to that IP:PORT to another IP:...
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1answer
392 views

Does driver exist for Trendnet AC1200 Dual Band Wireless adapter for Ubuntu 14.04 64bit?

I'm new to Ubuntu and was wondering if Ubuntu 14.04 64-bit drivers exist for the Trendnet AC1200 Dual Band Wireless USB 3.0 adapter. I tried searching the forums for my specific adapter, but no luck. ...
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Excessive Power Consumption by ethernet socket

Recently I have been having problems with power consumption in Ubuntu, I am not exactly sure when this started but roughly about two weeks ago. Idle my laptop used about 9-10W of power, or at least it ...
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2answers
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Wireless Drivers for Broadcom BCM 4321 (14e4:4329) will not stay connected to a wireless network

So, I'm not necessary new to Linux, I just never took the time to learn it, so please, bare with me. I just swapped out one of my wireless cards from one computer to another. This wireless card in ...
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Problem with Dell PowerEdge 1950 network interface

The 1950 has two Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet interfaces. When I have eth0 running and eth1 disabled, dhcp client kicks in, and the server is assigned an address and life ...
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1answer
174 views

Failover/ gateway issue. Help please

hope someone can help, this would be excellent. I’ve ubuntu DHCP server (10.04), which works great (many thanks to everyone who helped me in this excellent forum). This server has 2 cards, eth0 for ...
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1answer
44 views

Only resolve DNS on VPN Server

I installed pptpd but my connection is too slow and i need use Google DNSes (8.8.8.8,8.8.4.4) on my Android without root for mobile network (not Wi-Fi). How can i configure my ubuntu server for just ...