Managing and using network connectivity on a Ubuntu system

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How to remote access Aster express through ubuntu?

I am using latest version of Aster express edition form Teradata and configured, which is run only in windows so create a virtual machine of windows on my Ubuntu machine, and its perfectly working in ...
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3answers
704 views

Wireless won't connect after resume - adapter is not asleep

Running 14.04 on a Samsung N150. I am having the same problem as described in this post To reiterate, this is NOT the 'adapter sleeping' problem; it sees the network(s) and starts trying to connect ...
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1answer
512 views

What does this test really do (Loopback TCP Network Performance)?

I found in the phoronix test suite a micro benchmark called "Loopback TCP Network Performance 1.0.1", the same kind of command used here: nc -d -l 9999 > /dev/null & time dd if=/dev/zero bs=...
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1answer
87 views

WiFi no longer working

My network indicator was not showing up in in my menu bar. I saw someone else had a similar question, so I tried running the same things that they did. I ran apt-get install indicator-network and also ...
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1answer
44 views

LAN networking problem

I have 7 PC with Ubuntu 14.04 on them. I want one PC be like server (i have lampp on this and it works but only on that PC), I want all to conect together using switch no router. So they can acces ...
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1answer
238 views

Wireless is not working on my lenovo E4430 having ubuntu 12.04 LTS (Realtek 8723BE802.11n PCI wireless). There is no icon to enable wireless

Initially wireless was working in my lenovo E4430 having Ubuntu 12.04 LTS. When I updated Ubuntu 12.04 in root, wireless stopped working. Now Realtek 8723BE 802.11n PCI wireless driver is not ...
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1answer
77 views

Transition from single node to multi node hadoop same

I've followed the hadoop single node installation steps from this link . And now following this link to connect them to make a multi-node cluster. I'm in the beginning of the steps and I just have a ...
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1answer
2k views

ssh-copy-id no identities found ubuntu error [duplicate]

I have two machines that were setup exactly the same with the same name and users and everything exactly the same. Each machine has two users with this names userA (userA@UserA) and userB (userB@UserA)...
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0answers
59 views

How can I randomise my MAC address in response to probe requests?

I read recently that iOS 8 devices will randomise their MAC addresses when probed. In iOS8, Wi-Fi scanning behavior has changed to use random, locally administrated MAC addresses Probe ...
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2answers
3k views

Disconnecting wifi every few minutes

I'm new in Ubuntu and I have some small problem with my wifi. I manage to connect it after an hour of using this forum, however now whatever I'm doing I'm loosing the connection every few minutes. I ...
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0answers
99 views

Wireless hotspot problem

My Ubuntu laptop connects the Internet though data card. When i try to use it in my mobile by turning on wireless hotspot in laptop i couldn't find any networks in my search result in the phone. I had ...
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2answers
7k views

Use Steam's In-Home Streaming across VPN (OpenVPN)?

Like the question says, I would like to set up an OpenVPN server using TAP mode to facilitate the game-streaming capabilities built into Steam to stream from a Windows 7 gaming machine to an ...
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1answer
229 views

Installed 14.04 LTS dual boot with Win 8.1, now network not detected by either

Had to turn off secure boot and install Ubuntu in Legacy mode. I can boot to windows with boot option "OS Boot Manager", boot to Ubuntu using "Notebook Hard Disk" option in "Boot Optons" menu. First ...
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1answer
195 views

DHCP change requires reboot

I have a static IP set on my web-server. When I change static to dhcp the server needs to be reboot for the changes to take effect. Is there any way to make it so I can use ifdown and ifup to change ...
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1answer
65 views

Exactly what is the definition of Ubuntu's airplane mode?

I am trying to understand what Ubuntu's airplane mode is, not in concept but in implementation. Aside from the visual indication of it in the GUI, exactly how is this state defined? Is it defined ...
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5answers
25k views

How to monitor bandwidth usage?

I am using Ubuntu 14.04. My internet connection is pretty slow (512 kbps). Sometimes I see that I have no software running which should download anything from the internet, but the system monitor ...
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2answers
1k views

Network manager start access point

I have a pcDuino and I need to start a access point using network-manager. I know this can be done by creating a new connection and setting the mode to ap. It says that this mode is not supported but ...
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1answer
62 views

connect: Network is uinreachable

I have a problem with my network connection. When I tried to ping 8.8.8.8 I get an error that "Network is unreachable". I tried to restart dhclient for eth0 but did not help. It is weird, that it don'...
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0answers
787 views

bridge vs iptables vs route?

iptables vs bridge-utils vs route I have two network cards in a Linux server and don't know how to make them communicate. After searching a lot I still don't know which method is the one that should ...
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0answers
552 views

ASUS USB-AC53 Ubuntu 14.04 won't connect, stalled out from prior answer

Question/Answer from earlier this year on getting ASUS USB-AC53 network adapter running in Ubuntu Where I am stalling out is that after using ButtersB's instructions Ubuntu is recognizing the driver ...
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2answers
33 views

Remove Wi-Fi Networks

How do I remove the following ghost networks? When I go to the "Edit Connections..." menu these are not listed there. Moreover, it says that Winnie-the-Pooh is disconnected and connected at the same ...
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1answer
4k views

Ubuntu 14.04 wireless network setup

I am trying to setup kvm on my laptop. These are the steps I have done so far. Uninstalled existing windows7 and installed Ubuntu 14.04 on the laptop. I have a network which provides me wireless ...
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0answers
481 views

How to create a static wifi with hostapd UBUNTU 14.04?

I am trying to connect my android phone with wifi ubuntu. Things I have tried: 1) ap-hotspot -> , phone stuck in obtaining ip address, then avoided due to poor internet 2) manually configured ...
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1answer
105 views

How to dial Mobile Broadband Connection at particular time (Schedule Dial)?

I use D-Link DWP-156 Wireless 3G Modem with Vodafone India as ISP. The mobile broadband connection works perfectly with Network manager (No Problem with connecting or Dialing). Now I want to dial ...
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1answer
507 views

Unable to connect to server: Starbucks wifi and newly installed Ubuntu

Ok, so last night I went ahead with adding Ubuntu to my yoga thinkpad along side Windows 8.1 I love it. Wifi works at home but I decided to drive over to Starbucks today to get some writing work ...
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1answer
120 views

slow boot time on two static IPs

I was wondering why I have such a slow boot time when I have two static IPs set in the /etc/networ/interfaces file? auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 10.8.10.8 ...
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2answers
1k views

Bonding TUN interfaces

I am trying to do VPN tunnels bonding as explained by Simon Mott - VPN bonding. But after doing the steps, and when I tried to start the bonding I got the same error message as in http://stackoverflow....
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1answer
127 views

How to configure external IP in guest machine

How to configure an external IP into a guest machine. The host has eth0 (LAN) and eth1 (external IP). The guest machine should have a LAN ip and the external IP. The host should only have a LAN ip. ...
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1answer
1k views

How do I fix WLAN hot key to toggle wireless state instead of airplane mode?

I've got a Lenovo ThinkPad Edge E520 laptop (model 1143-3BU). Whether running Ubuntu 14.04 or Linux Mint 17 Cinnamon, its wireless hot key Fn-F9 correctly generates the XF86WLAN keysym and reliably ...
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0answers
458 views

How to make Android share Ubuntu's proxy?

I had make my android mobile connect to ubuntu using reverse tethering mode according to this link forum.xda-developers.com/showthread.php?t=2287494. below is my script, and works well. ▶ cat bin/...
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1answer
55 views

Workarounds to a lossy network

I have a lossy internet(12% package lost) at home,which leads a extremely slow speed for TCP connections between one of my fully controlled(root access) server and my computer. Is there any ...
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1answer
527 views

Wireless indicator disappeared on Ubuntu 14.04 and can not connect to new wifi

Strangely, wireless indicator has been disappeared. In addition, When I open the network manager, I can not connect to new wifi, so, I am only able to connect to previous connected wifis. Any Help to ...
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0answers
101 views

How to change pptp vpn remote password 12.04

I'm looking for a way to change my pptp VPN connection password on the remote server, is there any way to do this? I know that from windows if the password expires the connection automatically prompt ...
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1answer
49 views

Keyboard pass-through from one Ubuntu PC to another?

I have two PCs running Ubuntu. Both are on a common LAN and I can even connect them directly to each other with an ethernet cable. Now, it just so happens that I hate the chiclet keyboard on the ...
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0answers
2k views

Trying to use Lubuntu as a simple server in a Windows-8 network

I have a couple of Windows-8 machines and a Win-7, and I'd like to use a small ASUS-eee running Lubuntu 14.04 as a simple fileserver for limited data that I usually need on one PC or the other. I have ...
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1answer
686 views

Virtualbox VPN settings

I can connect to a VPN using NetworkManager, but I can't do it from Windows XP running as a guest OS. Unfortunately, the VPN is only to access local servers in my organization, and it isn't "connected"...
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1answer
142 views

Restart ntlmaps without logging out?

I installed ntlmaps from the package repositories. Since then it starts automatically when I login. Now I had to make a setting change. The problem is that I cannot turn off the computer or logout ...
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1answer
122 views

Network configuration on boot taking longer than 60 seconds… why?

My HTPC was running Ubuntu 13.04 and had no problems, but I've re-formatted the system and installed Ubuntu 14.04 (minimal) from scratch and I've having a problem with my network. When the system ...
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2answers
779 views

Using arping command in ubuntu 12.04

I am configuring a pgpool instance to get a HA of postgresql services. I am following this configuration. I found a command and I ran it manually in my console: arping_cmd = 'arping -U $_IP_$ -w 1' ...
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2answers
7k views

Setting a Static Ip on Ubuntu

I'm struggling with setting my static ip, nothing seems to work. When I enter my interfaces, it says (by default): # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback ...
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0answers
34 views

How to Install USB Micromax MMX 354G in ubuntu 10.04 [duplicate]

How to install Micromax MMX 354G USB in Ubuntu 10.04
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2answers
81 views

link 2 computer over the internet

I have 2 desktop computers and I would like to connect both of these computers together over the internet so I could access the information from one room to another. the computer with the files I ...
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1answer
225 views

I have problem connecting to the internet after upgrading to ubuntu 14.04.1 LTS desktop version

I have problem connecting to the internet after upgrading to ubuntu 14.04.1 LTS desktop version. The system was installed in VirtualBox. It worked well before; after upgrading to 14.04.1 LTS, it ...
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1answer
402 views

How do I set up a firewall/iptables using rc.firewall?

I am new to Ubuntu and am having a bit of trouble getting my firewall set up for my Network Security class. We are set up with 3 virtual machines - a Gateway, a Server, and a Client. We are supposed ...
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2answers
7k views

Computer automatically disconnects from wifi: I have to restart to get back online [duplicate]

My Lenovo Ideapad G50-70 will automatically disconnect from the Internet at random moments on 14.04. The network will first just stop working without any warning, and after a while, it will disconnect ...
4
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1answer
5k views

UFW for OpenVPN

I want to configure ufw (uncomplicated firewall) for OpenVPN. Connections are only allowed through OpenVPN. Everything else should be blocked. So if OpenVPN is disconnected -> no internet! I found ...
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1answer
2k views

USB 3.0 port not detecting USB modem

I have HP 250 G2 laptop with Windows 7 and Ubuntu 14.04 (dual-boot). The laptop has USB 2.0 ports and one USB 3.0 port. I am using USB 3G mobile broadband modem (Huawei K4201), which is working ...
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1answer
27 views

Updated some VM's from 12 LTS to 14.04.1 LTS, and now network throughput is bad, any ideas?

I decided to bite the bullet after seeing the messages about going to 14, and ran the upgrade scripts. This all seemed to go well, so I kept going and updated all 3 of my VM's that are running Ubuntu ...
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1answer
158 views

TWC arris cable modem. browse but no port forward

I have am arris cable modem tg1672g62. i'm running ubuntu 12.04 lts Genuine Intel® CPU 585 @ 2.16GHz 32 bit. i connect to firmware by typing 192.168.100.1:8080 in theory it should be 192.168.0.1 i ...
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0answers
33 views

No 'wlan0' on 14.04.1 LTS [duplicate]

Just installed Ubuntu 14.04.1 LTS 32bit on my "mature" Asus X50R laptop. Basically working fine and I'm using it to write this post, with a wired network. However wireless doesn't work. The ...