Managing and using network connectivity on a Ubuntu system

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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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30 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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26 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
31 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
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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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35 views

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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76 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
51 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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1answer
30 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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39 views

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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9 views

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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1answer
34 views

Can't connec to the Internet [closed]

I just installed xubuntu 14.04. I'm using a VPN on my host machine. I can't connect to the internet either with the VPN on or off. I tried pinging a public IP address with no luck. I have stopped and ...
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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 ...
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1answer
25 views

Changing wifi username

My pupils are supposed to log on to the school wifi using individual usernames/passwords. Is there any way of not storing the usernames of previous users? Currently they have to edit connections, ...
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0answers
23 views

network DISABLED on new install

Linux newbie here that is completely stumped. I have a new install of Ubuntu 14.04.1 LTS on a HYPER-V virtual server. Installed fine, but it was unable to obtain an IP address. I'm thinking that ...
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1answer
22 views

System Monitor -Network History shows activity when internet not being used

I am new to Linux, I noticed that the system monitor's network history shows activity when I am connected to the wifi even when I am not using my browser . Is there a way I could see which application ...
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1answer
34 views

Internet connectivity does not work in Ubuntu Server 14.04 on Windows 8 VirtualBox host

I have a PC with Windows 8, with Oracle VirtualBox installed on it. In the File>Preferences>Network menu in VirtualBox, I have created three host-only networks: Host-only network 1 - 10.10.10.1 ...
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0answers
28 views

Network bonding multiple isp connection [duplicate]

Linux novice here... I have 2 Internet connection with 2 ISP providers with 2 NIC. I tried for a long time to combine these 2 isps connection to use like a single connection. Home Connection ...
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1answer
24 views

How to block access to all SSIDs except for a preferred SSID

I work in an enterprise environment and I need to block access in Ubuntu 14.04 to any unapproved SSID in a lab setup. The client only wants users in the lab to be able to access one specific SSID and ...
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0answers
12 views

Setting wireless to default in ubuntu server 12.04

I am using ubuntu server 12.04 to control a robot. There are laser scanners connected to eth0 and eth1, and I am using wicd-curses to control the wireless. I am sshing into the robot computer from a ...
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0answers
18 views

OpenConnect VPN taking a long time to show the dialog box

The VPN I connect to (a Cisco AnyConnect VPN) normally pops up the connection dialog box for username and password (I have two factor auth) very quickly, but today it took a really long time ...
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0answers
24 views

apt-get update problem in ubuntu server 14.04 using oracle virtual box

I have installed Oracle virtual box 4.3 on windows 8, then i created 3 virtual machines namely controller, network and compute. After configuring static ip for all of these i have opened controller vm ...
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Losing wireless networks on battery power 14.04

Running Ubuntu 14.04. Using a Dell Inspiron 5520. I assume this has to have been asked somewhere before, but Google has not been showing me any love whilst looking for a solution. If my computer is ...
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Ubuntu VPN connection worked fine until restart of laptop

http://pastebin.com/zB5sHMtv Here is what I get when I run tail -f /var/log/syslog and try to connect to my VPN. It was working fine till I restarted my laptop, and now I cannot connect, while my ...
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1answer
23 views

OSSEC HIDS reports “Interface entered in promiscuous(sniffing) mode”

I have installed the latest version of OSSEC HIDS (2.8.1), and I keep now getting these email notifications from it: OSSEC HIDS Notification. 2015 Apr 08 11:26:17 Received From: ...
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I'm using DHCP.I Cannot ping to local network. but can ping to public Ip

I'm Using Ubuntu 14.04LTS. I'm using DHCP. I can access internet. Also I can ping to any public IP address. But the problem is I cannot ping with any other system in my network. All other systems are ...
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1answer
33 views

Cant access Google and facebook

I am using Ubuntu from last 5 years. From last 3 days i am experiencing a problem related to internet, I am unable to open either google.com or facebook.com for first half an hour, allother websites ...
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13 views

Print crashes often

I noticed that lately, Print crashes often (multiple times daily). I don't remember this ever happening, before it started. I guess it has something to do with the issue stated in this question: (Show ...
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0answers
12 views

X server doesn't start with network?

My Ubuntu system doesn't start the graphics when the network is connected. If network is connected, the system says "Ubuntu" at the loading screen but then goes to a blank screen. I can press alt+F2 ...
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1answer
44 views

What do I need to do to get Software Updater to work though I'm connected and can browse the internet?

What do I need to do to get Software Updater to work though I'm connected and can browse the internet? Each time I try to update I'm met with the message Failed to download repository information. ...
1
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1answer
42 views

Why the attack's ip address has a string 'dia'

This is a record from netstat –lnt | grep ^tcp: tcp 0 0 xx.xxx.xx.72:ssh 106.49.174.61.dia:55983 ESTABLISHED "x" is hidden by me :) my questions are: why does the address have ...
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36 views

Erratic connectivity problems with Eduroam on 14.04 - possible workarounds?

I have to connect to eduroam through TU Delft settings from the following link ...
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10 views

Install Ubuntu on Local Network? [duplicate]

I have a Mac OS X machine and a Linux box both on the same local network. I can ssh into both and launch apps using ssh -X. My question is this: Can I remotely boot the Ubuntu installer located on ...
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25 views

Issue with network connectivity on Ubuntu 14.04 LTS

I have a dual-boot Dell desktop with Windows 7 and Ubuntu 14.04 LTS and one physical network drop. The Windows side connects without issue. The Ubuntu kernel does not want to connect to the network. ...
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Is there a way to create a 10G network interface for VMs in KVM2.0?

We have installed & configured the KVM 2.0 (qemu-kvm 2.0.0+dfsg-2ubuntu1.10) on Ubuntu 14.04. The physical server is connected to 10G network, KVM is configured in Bridged mode But the issue is, ...
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1answer
28 views

Sporadically unable to connect to ubuntu 14.04 LTS server using domain name

I use a DDNS which is automatically updated by my router every time a new IP address is assigned to the domain name. The no-ip domain name is pointing to the correct IP address. Currently I am ...
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1answer
73 views

Ubuntu Phone (Aquaris 4.5) How to connect to a wifi network wich requires an account?

So I tried to login to the WiFi network at my University, which requires an account and password, but I never came that far. Whenever I select one of the networks (there are 2 usable networks) it ...
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43 views

Ubuntu 14.04 very slow wifi connection

Okay, suddenly today I have experienced very slow wifi (wifi only, modem still works great) connection on my router. Signal only shows 1-2 bars (the router is next to me, checking from phone it is 4 ...
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71 views

Host to Guest one way connection issue

I have guest run on my machine on qemu with configuration: /usr/local/kvm/bin/qemu-system-x86_64 -enable-kvm -cpu host -smp 8 -hda ${TEST_VIRT_ENV_IMAGE} -m 4096 -netdev user,id=user.0 -device ...
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Trouble with WPA-EAP wireless network connection with Sony Vaio VPC-EA43FX [duplicate]

Just installed Linux and connects fine to the wireless network at home which is a typical WPA network. The problem though is at my work where the network there is WPA Enterprise with Protected EAP. On ...
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1answer
19 views

Setting up DNS on JUJU for local

So I have found Juju, which looks amazing! However a huge blocker for me is not knowing how to setup DNS. I have a dedicated server running Ubuntu 14.04LTS with JuJu installed, running local ...
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24 views

Kernel reports wlan0 “connection lost” frequently [duplicate]

I'm getting this message frequently: wlan0: Connection to AP f8:d1:11:44:01:06 lost This happens only on my work, not my house. I workaround this with sudo service network-manager restart or ...
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38 views

wireless internet connection suddenly slows down on ubuntu 14.04 lts

I have Ubuntu 14.04. Recently wireless internet has slowed down for no apparent reason, but wired connection is working at Max speed with no issues at all. I have tried different solutions including ...
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1answer
13 views

Having trouble installing cowpatty [duplicate]

Does anyone know where to get the newest version of cowpatty? I've typed the following: wget http://wirelessdefence.org/Contents/Files/cowpatty-4.6.tgz but it comes back with 'error 404 file not ...
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1answer
18 views

Set up A- and PTR-records automatically

is there a way to make the DNS or DHCP server to set up the A-record and PTR-record for each IP in a subnet? instead of adding one by one? thanks
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1answer
72 views

How to configure Wireless Network (broadcom 802.11 b/g bcm4312) on Ubuntu 14.04?

I installed Ubuntu 14.04 alongside Windows 7 recently. On booting to Ubuntu, I have a problem with connecting to wireless internet. The wired LAN is working properly. The Broadcom Wireless Adapter has ...
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13 views

NFS reporting clientid is in use

Two weeks ago, our network switched around and since then I've had issues with a workstation. It was originally configured as a static IP and now it is switched to DHCP. The home directory is an NFS ...
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1answer
29 views

Ubuntu 14 can detect wifi but cannot connect to internet

I just had my ubuntu 14 installed, but every now and then it fails to connect to internet, even though it showed that it's connected to wifi. Anyone knows how to fix this? to be specific, it will not ...
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2answers
64 views

Wireless randomly disconnects from time to time

For some reason, my laptop's wireless connection randomly disconnects from time to time. It may suddenly disconnect when I'm editing a Google Docs file, when I'm cleaning my files or when I've walked ...
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2answers
29 views

I want to using multiple VMs and multiple NICs

I have a windows machine with virtualbox running and 3 NICs [eth0/eth1/eth2]. Eth0 is connected to ISP. Other 2 are connected to each other through a switch. [yes, it is a switch, yes I need it there] ...