Managing and using network connectivity on a Ubuntu system

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Can't connect to PPTP VPN with ufw enabled on Ubuntu 14.04 with kernel 3.18

Suddenly VPN disconnected and can't reconnect no longer on kernel 3.18.1, so I try to install kernel 3.18.2 but my problem still exist. But I can connect to VPN with 3.14 kernel easily. The output of ...
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63 views

How to Install/Configure/Manage Server/ProxyServer for my small office to control everything ?? (Ubuntu 14.04)

I am totally newbie to Servers. I'm running a small web based office with having 25 employees. It's been 3 months & i'm watching that my team is sucking up all my internet data in ...
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2answers
44 views

How does Ubuntu (or Linux in general) decide over which network connection to use, when there are several connections present (e.g. LAN, WiFi, etc…)

I am asking myself for quite some time this question. With a normal laptop you can have at least two internet connections: ethernet (wired LAN) and wifi (wireless). If you use a USB cellular modem ...
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30 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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32 views

Removed network-manager and now network won't connect

I dislike ubuntu network-manager intensely so I have recently uninstalled it from a Lubuntu 14.10 machine in my company network and now I can't connect to the network. I have edited ...
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34 views

Unable to connect to my university wifi

I am on Ubuntu 14.04.1 and trying to connect to my university wifi (UWF). The security is a WPA/WPA2 enterprise PEAP. I enter my credentials but it just keeps asking for my password over and over ...
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2answers
27 views

Set network manager dns

I have Ubuntu 14.10. When I'm at work I can browse the internet without problems. Now that I'm at home, I can connect, but I'm not able to browse the web. Some informations: the output of ifconfig: ...
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1answer
34 views

forticlient vpn broke the non-vpn dns

I am on Ubuntu 14.10 and I installed forticlient to connect to my work network (following their doc) and some time later I started having big trouble connecting to most internet site. After some ...
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1answer
56 views

I can't access the internet through my raspberry pi when connected through ssh [closed]

Proof of the error When I try ping 8.8.8.8 through SSH I get this: PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data. --- 8.8.8.8 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, ...
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28 views

Cannot connect to college Wi-Fi 802.1g

I am new to Ubuntu.On just installed ubuntu 14.04 I am unable to connect to my college wifi 802.1g.It (khn-wifi)is displayed there in Network Manager menu but when clicked it again and again asks for ...
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22 views

test of usb on ethernet mode

I am trying to connect my DELL XPS 13 developer edition to a network with a USB to Ethernet adapter (this laptop doesn't have an Ethernet port). I am not able get any signal. I have tried using this ...
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17 views

How can I connect wifi card via serial-Usb and get a interface of it

I got a external Wi-Fi card as a chipset on board,and connected to my laptop via serial-USB adapter. And meanwhile I got the driver for wifi-card installed. And I checked the device by using dmesg | ...
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11 views

installation of Ralink RT2070 usb adapter

can anyone please suggest the suitable driver along with the procedure to install Ralink RT2070 usb adapter on my ubuntu 14.04, i have tried the steps which i got along with the usb adapter but its ...
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1answer
27 views

error install openvpn in ubuntu 12.04 lts [closed]

$ sudo apt-get install openvpn Reading package lists... Done Building dependency tree Reading state information... Done openvpn is already the newest version. The following packages were ...
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1answer
13 views

Multiple networks with DHCP prioritizing one

I'm trying to setup a client machine connected to two networks, both going out to the internet. Both networks, eth0 and vlan (eth0.8) should use DHCP. I want to use all the domain-name-servers, ...
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2answers
23 views

Network Issues ubuntu server

I have a question in regards to network connectivity. I have a mac mini that is running ubuntu server 14.04 and I'm have difficulty not only using apt-get to update and download but for some reason ...
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33 views

Trouble with wired connection

I'm running Ubuntu 14.04 and having problems connecting to a wired connection. My computer is having problems connecting to the network. Up until now, I have been able to solve this problem by doing ...
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1answer
69 views

Able to Ping and Telnet but not Browse any website

I have a fresh install of 14.04. I am unable to browse any website using both Ubuntu browser and Firefox (the only browsers installed by default). However, when I drop the terminal I am able to ping ...
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22 views

VirtualBox networking can be enabled only via recovery mode

I've installed ubuntu server with minimal system without network connection (disable network adapter) in VirtualBox, because my connection is so slow and it's take forever to install with network ...
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25 views

Teracom 3G T3G72A USB Modem is unable to connect to internet

Ubuntu 12.04 is able to detect Teracom 3G USB Modem (T3G72A) and NetworkManager also enables Mobile Broadband but when I click network connection it is unable to connect to internet. Any pointers ...
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1answer
39 views

PPPoE connection not configuring properly

I've looked through different posts about this type of issue but am not able to find a working solution. After running pppoeconf in terminal the option to connect through the configuration was taken. ...
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1answer
69 views

driver 8812au install with NO ethernet access

I apologize in advance if this is covered in a previous post. However, I've searched and searched and have only found solutions for people with access to an ethernet connection. I am currently running ...
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2answers
66 views

How can I connect my java phone's internet to my pc?

Itried a lot to connect my java mobile for sharing internet in my phone. But I don't know how to make the connection true. How can I connect my mobile phone(java) as a mobile broadband to share ...
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1answer
23 views

PC visibility in local network

The thing is my pc with ubuntu installed is not visible in local network. I want to test web-app which is working on my pc (localhost:8000). From my phone destination is unreachable. Should i allow ...
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35 views

Wired Internet connection stopped working on Ubuntu 14.04 LTS periodically

I have faced peculiar problem, let me explain the whole history. At first I have started to use Ubuntu 12.04LTS for my simulation purpose. But I recognised that internet connection (wired) stopped ...
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Trickle still not limiting on dynamically linked applications

I've researched on many sites about bandwidth control and traffic shaping, ending up with Trickle. An article from TuxRadar says: Not only that, it can't work with all TCP connections either. ...
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1answer
27 views

How to redirect URL:PORT traffic to multiple external IP:Port?

Currently, I'm using iptables to redirect incoming requests for "website.com:27015" to "xx.xx.xx.xx:27015". Problem is, since iptables redirects via the port 27015, I can only redirect to one single ...
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1answer
17 views

Why won't my BIND / Apache configuration work?

I am trying to set up a BIND configuration with an Apache webserver. What I am trying to achieve is to by using the URL www.exampler.net access the content that can be found on my Apache webserver's ...
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30 views

Laptop says connected to specific WiFi but wont work

I have an Acer c720 chromebook. I used ChrUbuntu to install Ubuntu on it. Using Ubuntu, it is able to connect to most wifi networks. However, it is not able to connect to one particular wifi network ...
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1answer
34 views

How do I run GUI version of NetworkManager on DWM?

I was using wicd-gtk to connect to networks but for some reason it doesn't connect me to some networks and NetworkManager seems to be working fine. How can I launch GUI version of NetworkManager if I ...
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2answers
23 views

Unclaimed interfaces on Samsung n210

I wanted to bring back to life my netbook Samsung n210 and decide to try it with Ubuntu 14.04 LTS. I first run the Live version from my USB pen drive, and it worked as a charm! Everything was ...
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PPTPd + Privoxy for Ad blocking VPN

I found a bash script that converts adblock plus lists into Privoxy filters and I want to use it to block ads via VPN settings on Windows, KDE, and Android. Also, I want to change the DNS servers to ...
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1answer
21 views

Connecting to IP#1 automatically redirects to IP#2

I have setup Ubuntu Server 14.04 on a independent server, with its internal IP 10.10.10.9. This is supposed to be a closed(as in, should only be accessible by other 10.10.10.X IPs only), and works ...
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Wifi laggy on rt3090 Ubuntu 14.10

Dear anyone that can help a beginner Ubuntu user, the wifi on my laptop is extremely unstable, Using the rt3090 internal wireless card, but Ubuntu is loading rt2800 drivers. My ethernet works ...
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1answer
130 views

Ubuntu 14 - WIFI unstable and slow with rtl8723be

I have a very similar problem with this post: Ubuntu 14.04 Slow and unstable wifi connection But I could not comment there and that's why I'm asking a new question. I have a notebook with dual boot ...
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1answer
42 views

Re-enable Network Manager?

I started doing Ubuntu literally a day or so ago. To get a certain USB NIC to work, I had to disable the Network Manager; the readme stated that the Network Manager would interfere with the Command ...
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1answer
35 views

What “flavour” or type of LAN should I be using? [closed]

I have Lubuntu 14.04 installed & running well on an old P4 machine (32 bit). I have Ubuntu 14.04 installed and running well, as a dual boot with WinXP, on a newer Core2Duo Asus MB system. Ubuntu ...
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1answer
50 views

Ubuntu 14.04 LTS hangs in Lenovo G510

I have installed Ubuntu 14.04 LTS in Lenovo Essential G510 laptop after erasing Windows 8 which came pre-installed(after trying Windows 8 and Ubuntu dual boot with hanging problem persisting). The ...
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40 views

Configuring BSNL EVDO using teracom modem

I thought of starting a new thread because all the other threads were confusing. My problem: i have a Teracom T-U500 modem for bsnl evdo internet connection There is a problem with usb_modeswitch ...
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ethernet not working on 14.04

I am a new ubuntu user.My ethernet is not working but wireless is working fine.(The cable is not detected. Output of : sudo lshw -C network *-network description: Ethernet interface ...
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19 views

Connectivity problem to one speficic ip

Scope: Ubuntu 14.04 server with tomcat7 hosted on Hyper-v. The app running need connectivity to another network through a vpn. The route to this network is added in the network interface file. This ...
0
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1answer
57 views

Remote Access to Ubuntu (as guest OS) from Linux Mint (as host OS) in VirtualBox with ssh

I'm trying to access remotely to Ubuntu virtual OS from the host OS which in this case is linux Mint. My Ubuntu version has no GUI, just a terminal interface. And change the network setting in ...
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11 views

Sharing from one wireless port to a Wifi card

I have a Toshiba satellite M35. I have a wifi connection, using the built in Intel Corporation PRO/Wireless 2200BG, to the internet and I can share it easily to the ethernet without any issues. Using ...
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35 views

How to configure the external interface on an OpenStack compute node

I am trying to configure the external network parameters on a compute node but I have a problem. Below are the configuration details of /etc/network/interfaces. This file describes the network ...
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37 views

Ethernet connection not working (1 Gbits/s - worked good before)

I have a quite annoying problem : since few days (around 2 months) my linux ethernet connection is not working (it worked good before, don't know why it's not working anymore). I have a dual boot ...
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1answer
106 views

Slow connection with 14.04 in a WIFI network [duplicate]

I have a ProBook HP laptop with 12.04 (PB-1), it connects to the WIFI and works fine. Now, I have just installed another ProBook (PB-2) with 14.04 (not 12.04), also connected to the WIFI, and ...
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1answer
99 views

Windows 7 & 8.1 -> Ubuntu 14 - Folder Sharing

NOOB LINUX user here... Recently installed Ubuntu 14 on a Intel NUC. Everything configured and working. I have a 4TB EXT USB 3.0 drive that I want to use as my HTPC data drive. Installed SAMBA ...
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Why does my Ubuntu 14.10 sends Network Packets to Broadcast when i Plugin a USB Device

I use PamUSB for Multifactor Authentication. Now I found out, that every time when I Plugin a USB Device my Ubuntu sends some networkpackets, all other services are deactivatet. Packets: package ...
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1answer
26 views

Unable to open https webpages

i am new here so please forgive me if i didnt put this question "by the rules". So, the problem: few months ago I wanted to switch from Win to Ubuntu 14.04 on my netbook (that i dont use that much), ...
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ubuntu 14.04 wired connection packet loss

I am running 14.04 on a new machine and have been unable to get a stable wired internet connection. kernel: 3.13.0-32-generic network card: RTL8111/8168/8411 If I enable DHCP, it sometimes ...