Managing and using network connectivity on a Ubuntu system

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How do I configure Ubuntu to share wifi connection with a single computer on a LAN?

I have 3 computers, 2 laptops with wifi and one PC with no wireless connection. I wish to use one of the laptop as a wireless gateway for the PC only. I know how to share with qll computer on q LAN, ...
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1answer
92 views

Cannot connect to internet running Ubuntu 14.04 using VirtualBox on my MSI GT60 - Windows 8.1 x64

I'm unsure if I am asking this question in the right place so please refer me elsewhere if necessary. I installed VirtualBox v 4.3.2 on my MSI GT60 running Windows 8.1 x64 a bit ago and created a VM ...
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2answers
124 views

What non malicious uses are there for ping's flood (-f) option?

I have been reading up on common ways in which people attack each other on the internet through things like DDOS attacks etc, and how one would defend oneself from such attacks, and I have come across ...
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1answer
27 views

iptables - redirect DNS queries

I already have the following iptables rules applied in order to masq all of the wlan1 traffic through wlan0. *filter :INPUT ACCEPT [48:6144] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [47:6078] -A INPUT -i ...
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1answer
15 views

Ubuntu keeps asking for Wifi password

I've recently installed the latest version of Ubuntu (64 bit), alongside my Windows 8 dual booted machine. The problem I'm having is trying to connect to my school network, the school uses a username ...
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3answers
59k views

How to set static routes in 12.04 Server

I have used Ubuntu since Ubuntu 8.10; today I'm working with Ubuntu 12.04 Server. I am having difficulty keeping static routes on booting. I would usually put the route commands /sbin/route add ...
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10 views

Route only traffic on specific port through VPN

I would like to route only traffic on a specific Port. In my case for torrents through a VPN. For Transmission the port is 51413 I think. I only found tutorials how to set this up on a router but I ...
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1answer
18 views

Porting WiFi network from NetworkManager to /etc/network/interfaces

I'm trying to move a WiFi network configuration from NetworkManager to static configuration in /etc/network/interfaces. The fully working NetworkManager configuration that I have right now is: ...
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9 views

Network disconnect option grayed out

With the latest updates I've received for my Ubuntu 12.04 64-bit machine, I am no longer able to select the "Disconnect" option when I use the drop-down menu under the connectivity task tray icon. ...
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21 views

how to configure USB mounted WiFi WLAN Adapter

I have a WiFi USB adapter/router . This adapter is using Realtek Semiconductor Corp. RTL8191SU. and supports WLAN 802.11n the output of lsusb gives me the following output ID 0bda:8172 Realtek ...
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1answer
507 views

Can not connect Qubee Shuttle (UH235) Wimax USB Modem in Ubuntu14.04

I am using Qubee Shuttle (UH235) Wimax USB Modem with windows 8.1 which works fine. But when I try to connect it with ubuntu, it can not recognize the modem. I talk with my friends from university, ...
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using sctp_recvmsg is the best? How?

I have just started with sctp and wrote my first program with it. I chose one-to-many communication style. Mainly I did things according to RFC 6458. (I used other source as well, but mainly I was ...
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13 views

Connect to remote Ubuntu Server GUI

I have a server running remotely by ip address 5.231.XX.XXX running Ubuntu 13.10 Operating system. I am using Ubuntu 14.04 on my laptop. I am able to connect to my server via terminal by ssh login ...
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1answer
20 views

Why can't I access my Ubumtu box on my LAN?

I can definitely access the external internet... via ping, wget, apt-get install, web browser..., but for some reason, I cannot ssh to my 14.04 server or ping it or or access any of the web sites i'm ...
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1answer
12 views

Can't connect to Internet via D-Link Dir-600 Router on Ubunto 14.10

I recently installed Ubunto 14.10 and have trouble accessing the internet with my current network setup at home. (Cisco EPC2308G Moden - D-Link DIR-600 Router - Samsung R540 Laptop) I can access the ...
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29 views

Sniffer: Request ARP

I need your help. How can I detect if there are several ARP REQUEST coming from the same machine "sniffer" in my local network, I need a source code example in python and not tools. thanks,
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21 views

Access a file on a remote Ubuntu machine using Java

From java running on Windows, I need to access a file on a remote Ubuntu machine. I use the following: URL U = new URL ( "http://" + SERVER_IP + ":" + SERVER_PORT + "/" + ClsName + ".class" ); ...
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1answer
7 views

Network failure when booting with network cable plugged

I now ran into this problem with my laptop. I can't establish an ethernet connection when I boot the system with network cable on. However, when I boot with network cable unplugged but connect it ...
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2answers
14k views

Proxy authentication with terminal Ubuntu 14.04

I would like to access the internet to update files etc. from the terminal on a secured proxy network. I've already tried the following: Adding to /etc/apt/apt.conf, /etc/apt/apt.conf.d/01proxy, ...
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Ubuntu loses network connection and dpms becomes re-enabled after unplugging AC adapter on Macbook Pro

On Ubuntu 14.01, when I unplug my AC adapter, the network connection is lost (even with connected to wired via eth0). Also, the dpms settings are lost. So even though I run "xset -dpms", that setting ...
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4 views

Why can't MAAS VM Node Commission properly

My issue appears to be with the MAAS Proxy. I used Ian Zoratti's VirtualBox extensions link to his GitHub site so that the MAAS Cluster Controller is able to start up the VM properly and pushes the ...
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1answer
85 views

Link aggregation on a LXC bridge

I'm working on a server with a number of various interfaces (eth0-3) and I currently just use one for both host traffic and another for my LXC bridges traffic. Since I have a few spare ports just ...
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2answers
32 views

No coffee shop WiFi for just me

I am currently in a coffee shop I frequent regularly and I am finally fed up with my issue. Some how I am the only one in the entire building that cannot use their WiFi. I see OSX and Windows ...
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MAAS Network and NAT

Here is the case: 1) I have a public network connected to internet LAN #1 2) I have another private network for MAAS and its DHCP and DNS , LAN #2 3) For internet connection i need to enable NAT ...
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2answers
52 views

WiFi connection to router but no Internet connection?

I installed Ubuntu on my EasyNote-TM86 today. I can't access any websites although I am connected to my router. Other devices (including my laptop before I installed Ubuntu) are able to establish a ...
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6answers
13k views

How do I fix broken networking in cloned virtual machines?

I've set up a virtual machine configured with bridge networking. After making eight clones of it, the new machines can't connect to the network. I've instructed VirtualBox to re-generate the ...
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0answers
14 views

N WiFi Adapter only working in G mode

So, I have a PC running Ubuntu 64-bit in my bedroom, and I am trying to use the onboard WiFi (Broadcom 43228 802.11a/b/g/n) to connect to the router which is 2 floors down on the ground floor. The ...
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2answers
954 views

BCM4352 Wireless network card issues with lubuntu 14.04 LTS

Just got a new laptop with Windows 8 on which I installed Lubuntu, but Lubuntu does not recognize my Broadcom Corporation BCM4352 Wireless Network Adapter. I Googled the web and went through a couple ...
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0answers
7 views

Not reaching Gigabit (~30MB/s) with Ubunut 14.04

So I have a dual boot setup (Win7/Ubuntu 14.04) on my Samsung Laptop Np530U3C. When booted into Win I get via wired network transfer to my desktop machine (win8.1) around 80-90 MB/s (read and write). ...
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1answer
5k views

Is there a GUI app to setup and toggle hostapd?

Title says it all, I've tried wifi-hostapd-app but I always run into trouble while installing one of its dependencies, dnsmasq specifically. I read one of the workarounds is to disable Ubuntu's ...
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1answer
23 views

juju deploy fails with “lookup store.juju.ubuntu.com: no such host”

I have a MAAS setup (using KVM) with 1 MAAS controller and 1 server node. I could "juju bootstrap" successfully and following is the output of "juju status" vishal@maas:~$ juju status environment: ...
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+200

How to correctly configure nova-compute to use FlatDHCPManager

I am trying to deploy Openstack using FlatDHCPManager. I am using MAAS+Juju to deploy all of my nodes (HP Moonshot) running trusty. I want eth1 to be the public interface. Here are the relevant ...
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0answers
29 views

How do I reconnect my WiFi without entering the superuser password?

The connection to my Mythbuntu system was recently changed from cable to WiFi. Now sometimes the computer disconnects the WiFi-connection and prompts for authentication. How do I tell Mythbuntu to ...
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0answers
35 views

Network issues on 14.10

I have installed Ubuntu 14.10 on my desktop computer in the office, but I'm having troubles with the network. The issue is that I can't make it connect to the network at all, as it displays icon for ...
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28 views

WiFi card UNCLAIMED

I have Asus r510jk with Ubuntu 14.10 on it. I had some problems with with, so I tried installing drivers for my network card: Realtek RLT8821ae. Problems occured when I restarted system, and there ...
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1answer
6k views

Ubuntu 12.04 // Likewise Open // Unable to ever authenticate AD users

So Ubuntu 12.04, Likewise latest from the beyondtrust website. Joins domain fine. Gets proper information from lw-get-status. Can use lw-find-user-by-name to retrieve/locate users. Can use ...
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1answer
80 views

Ethernet link not detected in ubuntu 14.04 after update

Since I ran some update in the past week or so, I have not been able to get a wired connection. Specifically: Initially, during boot up, the ethernet link light is on As ubuntu boots up, the link ...
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7 views

My Cisco Netgear

I have a desktop no working lan cable and my router doesn't read them so I use a cisco netgear. The problem is when I installed ubuntu that I can't get it to recognize my cisco so I can access the ...
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1answer
77 views

Ubuntu 14.04 LTS - Wifi Doesn't work until I press Suspend and Resume

When I boot up my laptop running Ubuntu and log in to my user account, the wifi does not connect. When I click the wifi icon in the top right, all the options are disabled except from VPN Connections. ...
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0answers
21 views

Ubuntu Netwok problem

So this is my problem. I have a server which I run Ubuntu 14.04 on. I also have the same Ubuntu on my pc which is a double boot. Now I have tried getting Samba and Splashtop to work on my server but ...
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19 views

Ubuntu won't connect to my router, But connects to my hotspot on my phone. Why is this?

I have installed Ubuntu for the first time, and it won't authenticate to my router. It connects just fine to my wireless hotspot, and i'm not sure if it can connect via ethernet cable. Any fixes to ...
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0answers
7 views

Wake-On-LAN (WOL) not working if hibernating for a longer time

I am using pm-hibernate to set my 12.04 server to power saving mode. If it is woken up using Wake-On-LAN after a short time (e.g. 10 minutes), everything works OK. But if I try to WOL the server ...
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1answer
19 views

How do I change the primary DNS address of my DSL connection in Ubuntu 14.04?

I am using a DSL network connection in my Ubuntu 14.04. There has been set up a primary DNS address of my ISP by default. But I want to use Google Public DNS. I tried to edit the connection by going ...
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1answer
45 views

Rogers or Rogered? [on hold]

I have recently switched to Rogers internet. I can connect to my wireless router, but it can not connect to the internet. I have searched for answers, but came up short. (Windows connected fine, ...
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35 views

Ubuntu 14.10 (Utopic Unicorn) doesn't connect to wireless networks

I'm using 6-7 years old LG MB500, just installed Ubuntu 14.10 (Utopic Unicorn), and I can't connect to my school network (WPA-WPA2 ENTERPRISE,TLS, MSCHAPv2, no CA certificate). The computer displays ...
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1answer
29 views

Track Network Usage in Wifi Connection

I'm a student staying at a communal residence of 6 people and the rent includes internet access which is supposedly uncapped but if you really push your downloads(lets say more than 300GB) the ISP ...
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2answers
5k 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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3answers
5k views

Git cloning error

I've just started to learn git and I tried to run this command : git clone git://github.com/schacon/ticgit.git It did not work and I got this error message ...
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0answers
37 views

Ubuntu 14.04.2 32-bit cannot connect to internet

I just installed Ubuntu on my old desktop today(removed Windows completely), and I am unable to connect to the internet. When I checked behind my CPU for the network port, the lights blink until ...
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0answers
31 views

WiFi randomly turning off or disconnecting (lenovo t540p, Ubuntu 14.04)

I installed Ubuntu 14.04 on my lenovo t540p. Everything is working good, however, the wireless keeps turning off or disconnecting from time to time. This is my iwconfig: eth0 no wireless ...