Managing and using network connectivity on a Ubuntu system

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How to check Active Linux machines in LAN [on hold]

How to check Active Linux machines in LAN.In ubuntu 12.04. Anyone knows please suggest me.
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25 views

Why I can't I telnet to a specific port?

the port 7778 is in listen, netstat -tulpn tcp 0 0 127.0.0.1:7778 0.0.0.0:* LISTEN 22776/java but I can't telnet that port from remote machine while I can telnet other ...
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1answer
13 views

How to install Ubuntu from a network / How to boot a system from a network using grub?

Can Ubuntu be installed on a system which doesn't have any working DVD drive or USB port but it has ethernet port? openSuSE can be installed from network using grub. See this ...
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19 views

OpenVPN: Cannot access local IP adresses

I did set up OpenVPN-AS (32 bit) as described here: https://www.digitalocean.com/community/tutorials/how-to-install-openvpn-access-server-on-ubuntu-12-04 After installing OpenVPN I upgraded my Ubuntu ...
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0answers
22 views

Using iptables to redirect all traffic to my localhost

So I've just installed DD-WRT on my router and I wanted to redirect all http requests to my local host located at 192.168.1.50 (port 80) but I'm unable to find any way of doing this. I've tried doing ...
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2answers
37 views

No wifi capabilities on Toshiba Satellite A665

I recently got a Satellite A665 from a buddy who was looking to get rid of his stuff. The first thing I did was try to put on Ubuntu 14.04 which went just fine as it has for me in the past. But I ...
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19 views

Cannot see a particular wifi network [on hold]

I have installed ubuntu 13.10 in my laptop. After the installation, when I'm trying to find the wifi networks, I see others' wifi network other than mine. The ssid of my internet is not showing up, ...
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14 views

connection sharing between ubuntu 14.04 and xbox 360

I have an xbox 360 and a laptop with Ubuntu 14.04. What I want is to share the wireless internet connection of my laptop with my xbox via an ethernet cable. How can I set this up?
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3answers
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cant remotely connect to mysql

I've got a 3 servers & 1 windows machine running in a LAN HTTP server (Apache2, PHP5 & phpmyadmin) - 10.0.0.10 DNS - 10.0.0.1 MySQL - 10.0.0.40 Windows - 10.0.0.157 i've just installed a ...
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25 views

Cannot connect to a Windows pc in a Linux network

I have a network running here on a Ubuntu server. A DHCP and a DNS server are running. I now have one Windows computer in that network and several computers with Ubuntu installed. I can ping and have ...
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1answer
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in a public/private network deployment of MAAS + Openstack why does MAAS need to know about the public network?

Mainly to @andreas who wrote the guide MAAS network layouts for the Landscape Autopilot You state: MAAS only manages the private network, for which it will setup DNS and DHCP, but it has to know ...
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Wireless connection issue. Loosing connection every 5-30 minutes

I recently installed Ubuntu on my laptop. At first, the wireless network was not working at all so I had to install the network drivers manually, following this tutorial. The problem now is that I ...
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22 views

X server can't start since 14.04.2 LTS update

I have an AsusZenbook Prime UX31A and I've been happily running Ubuntu on it since I bought it two or three years ago. Being a linux user since 10yr+, I know my way around the system, but here I have ...
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1answer
21 views

How to set up an old PC to run a gaming server and have people connect it?

For starters, I am extremely new to the ubuntu community and even with UNIX itself... I have managed to wipe an old gaming computer, stack it with some ram, install ubuntu desktop 14.04, and from ...
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2answers
51 views

I deleted my resolv.conf how do I get it back or how do I create it again

I was changing my DHCP IP address to static on my server by sudo gedit /etc/network/interfaces and managed to edit the file and save it. I then went to change resolv.conf but then it went blank and ...
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15 views

Networking Ubuntu 14.10 to Windows 8.1

I'm running a dual-boot Ubuntu 14.10 on a Windows 8.1 Asus laptop and am trying to connect to my Windows 8.1 Asus desktop via my home network. I can see the desktop Asus from Ubuntu and know the ...
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10 views

how to create wireless network without LAN and internet connection

I tried to create my wireless network without LAN and internet on axsb embedded device. This device has ARM Linux, I want to connect device e.g Laptop, tablet etc through embedded device for using ...
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39 views

Unable to get wireless internet Qualcomm Atheros QCA6174 802.11ac

I've been looking around for hours to find a driver or a solution to get my wifi working on my new laptop (Acer Aspire V 17 nitro). But without success. I have a fresh Ubuntu 14.04 Installed, This ...
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34 views

Unable to access phpMyAdmin remotely

I've got a 3 servers & 1 windows machine running in a LAN HTTP server (Apache2, PHP5 & phpmyadmin) - 10.0.0.10 DNS - 10.0.0.1 MySQL - 10.0.0.40 Windows - 10.0.0.157 I'm currently trying to ...
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0answers
8 views

Can't see vlan packets on ethX.Y

I have a switch / AP connected to a server via eth1. Packets from the switch are untagged and can be seen on eth1. Packets from the AP are tagged with tag 2. Those packets can be seen on eth1 with ...
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1answer
45 views

TP-Link WN822n v3 (RTL8192cu) on Kubuntu 15.04 Beta 2 (linux 3.19.0-10-generic)

i've just installed Kubuntu 15.04 Beta 2 and i'm looking for a way to get the wifi adapter to work. The old ways of installing the driver using dkms don't seem to work anymore because of the newer ...
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1answer
21 views

Why can't I install software through my working Internet connection?

I have recently installed Ubuntu 12.04 on Dell Vostro 1014. While I was installing the OS, my system was connected to a network via the LAN cable. The network required a proxy for connection. Now when ...
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1answer
17 views

Help installing the network scanner from a Brother MFC-J6910DW?

The printer driver install and setup is completed and working fine. (Installed via Brothers install scripts) The machine is connected to the network on 192.168.1.4 and if I point a web browser to ...
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2answers
45 views

Can't connect with ethernet. System keeps trying to connect then give up

Recently i did a fresh install of version 14.04 on my desktop. Despite of some problems, everything is working fine. The only thing that i can't get to work is my Ethernet connection. When i try to ...
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How to fix network devices offline

I have Lenovo G560 with Ubuntu 14.04 LTS and Windows 7 dual operating system. Wi-fi is working fine through Bluetooth in Windows. But in Ubuntu I am not able to connect (both wired & wi-fi) to ...
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How cleanup configuration of network interface without ifdown

I'm trying to develop a wifi remote configurator. Now I'm fighting with ifdown command. This command work good if you use the right "sequence": ifup wlan0=wlan0-HomeWiFi ifdown wlan0 but when I ...
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1answer
36 views

get mac address of device

I have a scientific instrument, which I am trying to connect via cross over cable. I need to get that device's mac address so that I can configure the communications server. How can I get the MAC ...
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33 views

Automatically load module on system startup

I have a Netgear A6100 USB Wi-Fi adapter connected to my desktop, using the 8812au kernel module. However, I have to run sudo modprobe 8812au on every system startup. How can I get Ubuntu to ...
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1answer
20 views

KDE Network Manager Notification Options Not Available

KDE Network Manager is suppose to have notification options for Connection Activated or Deactivated are missing here. I am on Kubuntu 14.04 LTS fully updated. You can see in the picture that some of ...
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0answers
33 views

configuration of dlink dwa-123 for kali [closed]

im using kali . as there is no askkali.com , i wish and hope askubuntu.com is friendly have family sense to help me as we are in linux big family . okay here we go . its said i have problem with ...
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1answer
55 views

[SOLVED]Ubuntu doesnt install any driver

the thing is simple... I have a hp pavilion g4, i used ubuntu for some weeks and then it started to fail. First of all, the computer started to have problems with my wifi connection. Because of that, ...
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Ethernet on laptop only works occasionally

The Ethernet connection on my laptop works only occasionally. Wi-Fi on my laptop works, so the problem does not seem to be with the Internet connection. Plugging in the Ethernet cable and turning off ...
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15 views

Use Interface Metric to Change Interface

I am using Ubuntu 12.04 64-bit on a laptop, and I want to switch default network interface between wlan0 and eth0. By using ifmetric (shown on this page), setting eth0's metric to 1000 and wlan0 to 0 ...
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8 views

bootp server in a Virtual Machine

I have a HP LCMS that I am trying to set up in a Virtual machine on virtual box. The Virtual Machine is windows xp, and the host is ubuntu 14.04.2. The LCMS requires there be a BOOTP server running to ...
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Implement Catch-all HTTP Server using DNSMASQ

Ubuntu 14.04 | dnsmasq My goal is to setup a catch-all HTTP server using an Ubuntu 14.04 workstation as DNS resolver. I have installed dnsmasq on my Ubuntu 14.04 OS using apt-get install dnsmasq and ...
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Hung Wireless on AE1000 usb dongle

I recently switched over to using Ubuntu and I seem to be having problems with my wireless connection. I'll try to give the best description as possible, so it would appear that my wireless has been ...
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0answers
40 views

Start programming [closed]

I am a beginner ubuntu user, and I am interested in learning a programming language. My demands are that I would like it to help me master the command line, and be a good base voor learning future ...
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26 views

Hostapd with localhost server

I have hostapd and isc-dhcp-server working on my linux 14.04 box. My WiFi devices can find the hotspot and are assigned an ipaddress. At this point there is no connection through to eth0. I also have ...
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18 views

Transparent Proxy Configuration does not work

I need a little help with setting up a transparent proxy using squid3. I have the following situation: I am behind a explicit proxy and want to put a transparent proxy in front of it, so software ...
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1answer
28 views

Internet sharing with static mac-addr to IP mapping

I can create a network between my ubuntu 14.04 and another machine by connecting ethernet cable between my ubuntu machine and second machine, and then setting "IPv4" to "share to other computers". ...
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3answers
38 views

What is the difference between Pinging loopback address and pinging the system's IP address?

What I found was loopback tests whether the TCP/IP suite of our system is working properly or not and pinging our IP makes sure that NIC is working fine. This is okay but I wish to know its working ...
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Routing all internet traffic through interface of a host

I’m learning few networking concepts and I’ve got several hosts created in my VirtualBox setup. I have 2 adapters created as “host only” network (where the VM and host machine can see each other) and ...
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54 views

How do I enable Wireless hardware switch in a Samsung np270e5e?

I installed Ubuntu 14.04 and the wireless worked fine.. However after install and reboot my wifi is being disabled by a hardware switch. Is a uefi machine and Windows8 is not working anymore. I try ...
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1answer
47 views

lshw not showing wireless card

After a long battle with my Netgear WNDA3100v2, I can now see my adapter with the lsusb command, but it is not showing up on the lshw. I did get the Broadcom BCM43xx driver installed successfully, so ...
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23 views

Bit Rate issues on ubuntu 12.04 Centrino Advanced-N 6205 wireless card

I'm having some issues with my wireless connection. I'm using Ubuntu 12.04: $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu ...
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Unusual behave - Virus Like

I am facing a very strange behave on my Ubuntu 14.04 LTS box. I have an IPTV system providing cable TV and Internet through a router. My Ubuntu box is connected to the router and provides file serving ...
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Network printer makes noise every time i insert/remove a USB device

I know that I've encountered an answer to this question before, but i can't seem to figure out the right search terms to find the answer anywhere. I have an epson WF4630 at my office and an epson 845 ...
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0answers
57 views

nslookup on DNS server failing [closed]

I'm just trying to set up a DNS server and trying to nslookup ns1.smallbus.co.uk and i'm having a few issues with them. when i nslookup ns1.smallbus.co.uk I get the address 192.168.100.1 (external ...
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1answer
30 views

Can't connec to the Internet [on hold]

I just installed xubuntu. I'm using a VPN on my host machine. I can't connect to the internet. I tried pinging a public IP address with no luck. I have stopped and restarted networking.
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1answer
66 views

Is my system being controlled maliciously via wifi? [duplicate]

For many weeks now I have had the feeling somebody is controlling my computer over the wifi and etc. I have hundreds of screenshots that look something fishy about too, here are some of the software ...