Managing and using network connectivity on a Ubuntu system

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wifi connection on ubuntu 14.10 is very slowly and inestable after some time of use internet

my wifi connection is very slowly and inestable, i install dual boot on my machine in windows 8.1 wifi is ok, but in ubuntu kernel 3.16 after some minutes is each time more slowly, my card information ...
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8 views

How to install Edimax EW-7811Un

I can't connect to the Internet using Edimax EW-7811Un on Ubuntu 14.04 LTS I tried everything can anyone help me install the driver can one send me code for terminal to install the driver The ...
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Ubuntu 14.04 Ethernet Configuration not working

I would like to connect my laptop (ASUS N56-JN) through ethernet. I haven't been able to do so for a while now and I have tried most of the methods suggested in the other questions on this. The cable ...
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1answer
8 views

No internet connectivity despite all other devices working

I have configured a router and all of the devices work except for my linux box, when I boot it to windows, it can connect via wifi. When I connect it via ethernet it works, but through wifi, even ...
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Font dependency on network

I have a PC running Xubuntu 14.04, and for development purposes am disabling/enabling the network (trying to build some robustness into an application). The thing is: the machine behaves strangely ...
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Is there any trick to make my network adaptor sleep without super user permission? [duplicate]

i want to stop/pause my LAN Connection.That is what i needed and i don't want to use super user permissions.
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1answer
22 views

Network connectivity problem

I have installed ubuntu 14.04 along with windows 7. I recently upgraded win 7 to windows 8.1. But, it wasn't working properly so I made a fresh windows 7 install. Windows is working fine but ubuntu is ...
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31 views

Wireless extremely slow on Ubuntu 14.04 LTS

I installed Ubuntu 14.04 LTS alongside Windows 7 about a month ago. Since then my internet connectivity has been extremely slow. I am connected using WiFi and I have a Intel wireless 7260 network ...
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10 views

Adding firewall rule makes multiple entries

I am trying to add a rule to my Ubuntu 14 iptables to allow NTP (123) though using the command for "Allowing Incoming Traffic on Specific Ports" here: https://help.ubuntu.com/community/IptablesHowTo ...
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29 views

Ubuntu server cannot access internet, however can use SSH

So as stated I can access my server remotely, and locally using SSH, however I dont have access to "The internet". By this I mean I cant access webpages. dtipp@mc-server:~$ ping www.google.com ping: ...
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Network problems setting up an Ubuntu server in VirtualBox

Before I get into my problem I would like to start with what I am trying to accomplish in case my approach is non-optimal. I want to setup a virtual environment that mirrors our production ...
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1answer
29 views

How do you update the DNS resolver configuration without causing downtime?

A note New question, since everything else on this matter appears to be outdated and/or conflicting. Hold your close votes, please :) The problem On stock installs of Ubuntu 12 and 14 Server, the ...
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belkin n300 f9l4500 doesnt work on ubuntu 14.04

I am running ubuntu 14.04. I am relatively new and I tried to install ndiswrapper-1.59 and it say there is now directory at all. I do not have a wired internet connection at all (my apartment only ...
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24 views

How to get web interface for ubuntu 14.04 [on hold]

I want to enable web interface for my ubuntu in virtual machine over windows 7. Can you suggest which networking adapter should be used.. Thanks in advance
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2answers
35 views

Unable to connect to Remote Desktop ?

I am trying to connect to Remote machine (Windows 7 OS) using Remote Desktop Viewer. Protocol I'm using is RDP and Host is local IP of the machine I am trying to connect to. On Windows I have ...
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15 views

Network Manager StrongSWAN IPSec connection: add exception route

I just upgraded my VPN server from racoon to OpenSWAN (pfSense from 2.1 to 2.2), I managed to craft a working configuration for Ubuntu by following this wiki page. I added '0.0.0.0/0` as a subnet ...
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35 views

can not enable wifi on Xubuntu

Please read the question in full before marking it as duplicate, I have just installed Xubutu 14.04 on my VGNFE31H laptop The laptop has two wifi devices. First: The laptop has a built in wifi card ...
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Ubuntu 10.4 ETH0 info missing

I have tried finding help regarding this issue at other forums with not much luck hoping someone can help me here. Here is my issue... I am running Ubuntu 10.4 server that's been running good for ...
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How do I configure Ubuntu to share wifi connection with a single computer on a LAN? [duplicate]

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

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
39 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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22 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
23 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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22 views

Network disconnect option grayed out (Issue still apparent on latest releases and updates)

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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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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19 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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33 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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1answer
25 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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22 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
10 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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45 views

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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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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38 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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36 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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31 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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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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1answer
20 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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34 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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30 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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26 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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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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22 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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2answers
59 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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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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1answer
23 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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54 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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1answer
44 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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31 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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10 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
55 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 ...