Managing and using network connectivity on a Ubuntu system

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Can't access internet in KVM virtual machine running RHEL

I have the VM running on 14.04. When I checked for network connections on 14.04 it's available. But, the network connections are unavailable for RHEL6.5 running on my VM. I executed iwconfig to view ...
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wired network not detected on Ubutu14.04 LTS

Internet was working fine when I use Ubuntu without installing. But when I installed Ubuntu internet was not working, and even network drivers both wired and wireless are not working and not even ...
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1answer
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Ubuntu Server 14.04 Drop UDP packet

I use Ubuntu server as part of my system and now I have seen something interesting. I have a router that sends me ethernet 802.11 packets. I generate this packet in the router and then send it under ...
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I can't connect to Virtual Ubuntu Server from smartphone

I'm developing a web app for my degree. Due to security reason I installed Ubuntu Server on VMware Workstation and, with IP that I found thanks to ifconfig command I can reach the app from desktop ...
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ssh hangs when executed from Code

i am trying to log the RSSI value of wlan0 interface for a remote system. I run the following command to do that. sshpass -p <pwd> ssh <username>@<IP> iwconfig wlan0. I am executing ...
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passerelle sms kannel in ubuntu 14.04 (exit code = 16)

I need your help , I have virtualized Ubuntu 14.04 with kannel installed virtualbox on it with and I have a modem Huawei E1552 orange , my virtual machine recognize the modem ( wvdialconf ) but when I ...
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6 views

Will Biosdevname stay disabled when I update my system?

I wanted my server, 14.04.2, to use the old style of network interface naming, e.g. eth0. I used the Biosdevname part of the answer found here, editing /etc/default/grub but not purging the ...
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15 views

Since the update to 15.04, my dual-boot Dell XPS can't use WiFi

Since the update to 15.04, my dual-boot Dell XPS can't use my Wifi network. It can't even update itself now. Network is fine when I boot to Windows. When I reboot to Ubuntu, I can see both of my two ...
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9 views

Access webserver of VM

I have a problem with accessing my apache webserver (who is running on my VM) from my Windows 7 host. I check the ip address with ifconfigand then try to browse that IP address on my Windows 7 it ...
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2answers
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Network manager must be restarted after wakeup in Ubuntu 15.04

Upgraded from Ubuntu 14.04 to 15.04 on my lenovo T410 a couple of weeks ago and I have been having some problems with my network connection ever since. Everything worked fine with 14.04, but now I am ...
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ubuntu server 12.04.01 don't have internet

There is no GUI installed and below are useful information about my server: $ cat /etc/network/interfaces # The loopback network interface. I disabled this one. #auto lo #iface lo inet loopback # ...
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Problems on Kubuntu machine connecting to some sites after AT&T uverse upgrade

I recently had the U-verse service upgraded, and noticed that Facebook and youtube, and sometimes Yahoo have problems loading and displaying content. I am running Kubuntu 14.04 LTS, and using the ...
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Initial samba connection slow

So I have a 30 windows computers network connecting to a Fedora 20 server. This server serves as both a samba server and a gateway. I'm having troubles with the slow connection from windows to samba ...
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5 views

Route all LXC container traffic through host VPN connection

I have a host with an OpenVPN connection working on tun0 but not routing traffic through it. How would I configure an LXC container to route all it's traffic through the OpenVPN connection on tun0 ...
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8 views

How to connect Dual NICs in same system to each other

OK here is what I want to do, it may seem odd but its part of a piece of test equipment and I'm trying to validate that both Ethernet connections work on the same system. I have a system (many ...
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23 views

Can't see 5ghz networks, despite iwlist channel results

I can't detect 5ghz wireless networks, despite iwlist channel saying I should: $ iwlist wlan0 channel (...) Channel 36 : 5.18 GHz Channel 38 : 5.19 GHz Channel 40 : 5.2 GHz ...
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18 views

Wi-fi is enabled but unable to view Wi-Fi networks. [system wireless is ON]

Please help me. My Wi-Fi is not working from few days but my LAN is working fine. System wireless is ON. System is updated according to me. system has : Network controller [0280]: Intel ...
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ifdown: interface eth1.10 not configured Ignoring unknown interface eth1.10=eth1.10

Trying to add a vlan pool: This is the entry that I had made in the /etc/network/interfaces file: iface eth1.10 inet static address 172.85.85.1 netmask 255.255.255.0 ...
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2answers
19 views

Missing WiFi drivers on old Mac

I am having trouble with the Wifi drivers on my new instillation of Ubuntu. This is my first time using Linux, but I am familiar with Unix from OS X. I have replaced OS X with Ubuntu on an older model ...
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16 views

using ddclient with namecheap dns service doesn't update IP

I have just set up my first ever home server. I created root, made the IP static on my local network, installed openssh, and can now ssh into the computer as long as i am connected to my homes router. ...
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1answer
17 views

TRENDnet TEW-648UBM 802.11n 150Mbps Micro Wireless N Adapter not working

Okay, so I purchased a usb wireless adapter for about 25 bucks in the hopes that it might work better than my on-board Broadcom one. When I type in the following command: lsusb I get the following: ...
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How to setup Samba to register with an Active Directory Domain Controller?

I am trying to setup an Ubuntu 14.04 server on a windows network. The server has a static IP address assigned to it. I need to be able to register the hostname (argo) of the server with AD domain ...
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Why can't I download the certificate from a wifi network?

Trying to log into my library's network but it keeps saying that I need to designate what certificate to use- the only options are ignore or designate. Designating involves finding some cryptic file ...
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1answer
18 views

rtl8192ce can't associate to access point

I'm at the very beginning of the Ubuntu Installer where it asks to connect to a wireless network. The router, linksys, shows up on the screen, but fails to connect. When I run iwconfig I can see that ...
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Cannot connect to university wireless network, “disconnected - you are now offline”

I have trouble connecting to my universities wireless networks. My computer (running Ubuntu 14.04) shows me the available networks and tries to connect to them. It fails continuously just showing the ...
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Windows7 machine cannot access Linux share folders via Samba, help please

I have a linux and a windows 7 machine connected via samba. My linux machine is able to gain access to the folders on the windows 7 machine via the browse network tab in file manager but the windows 7 ...
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1answer
39 views

DNS Issue in ubuntu 14.04

I am facing DNS resolving issue sometimes in my Ubuntu 14.04.2 LTS trusty. I have configured my system with network manager to work with static IP assignment. I have also tried by changing DNS server ...
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486 views

Output only MAC address on Ubuntu

In Ubuntu, with command ifconfig -a, I obtain all the information about my ethernet/wifi interfaces. But I need to obtain as output only the MAC address, like: ab:cd:ef:12:34:56 57:89:12:34:ac:23 ...
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Ubuntu 15.04 : The save button in the 802.1x security is disabled when you choose PEAP in Authenication in network setting

The save button is disbaled when the PEAP in the authentication is choosed in the Network Connection ---> 802.1x Security. because of this I'm not able to connect to my network
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Why is Ubuntu resolving non-existent names to a local machine?

The domain www.hjhhfuddsa.com does not exist. However, if I browse to it in any web browser running under my Ubuntu 14.04 machine, I see the configuration page for an old NAS enclosure at ...
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2answers
35 views

Realtek RTL8723BE Wifi Disconnecting After few minutes

I have Realtek RTL8723BE Wireless LAN. I am successfully connected to a network and doing works for minutes. Suddenly I noticed after few minutes that not a single page is opening, showing resolving ...
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1answer
41 views

Use of Predictable Network Interface Names with alternate kernels

Almost constantly, I use kernels from the Ubuntu kernel PPA, or kernels I have compiled myself, using the Ubuntu kernel configuration. The problem is when I am using the stock kernel it seems to ...
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1answer
27 views

Can't connect to Ubuntu server

I installed the Ubuntu 15 server on a different computer and brought it to my Dell power edge 1950. After that I booted the power edge and now it is not connecting to the router. All I see is a solid ...
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19 views

XPS 13 with infinity display internet troubles

I have a new XPS 13 with infinity display,and with a Broadcom network controller: BCM4352 802.11ac. The Ubuntu version I'm running right now is 14.04. It's a beautiful machine, but I keep having wi-fi ...
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6 views

suppress http proxy not found message

On my Ubuntu laptop I use a HTTP proxy PAC script located in my own network to be able to use my preferred settings wherever I am. I always start my network connections manually so I can make a choice ...
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1answer
24 views

D-Link DWA-130 rev E1 RTL8191SU Wont Connect to Network (14.04)

Having a problem with getting my D-Link usb Wi-Fi dongle to connect to my wifi network. The dongle works, it scans and gives back the SSID's that are available, however when I try to connect, it ...
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1answer
24 views

How does DNS resolution work without any nameserver entries in resolv.conf?

I have a query on the purpose of the resolv.conf file. If I delete the name server entry from the /etc/resolv.conf file, my browser still able to do the DNS query. As far as I know, any URL is first ...
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2answers
29 views

Virtualbox and networking

I have installed Win 7 in Virtual Box but am unable to see my NAS Drive. I have checked under network and can see the internet. I looked under network in Virtual Box and it is set to NAT.
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45 views

nameserver 127.0.1.1 in resolv.conf won't go away!

I've read that I should have nameserver 127.0.1.1 in my /etc/resolv.conf file only if my machine has its own DNS server. Since it doesn't, having it causes problems. But no matter what I do I can not ...
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1answer
24 views

Lost Network Connection after apt-get upgrade from Ubuntu 14.04.1 to 14.04.2

I recently did sudo apt-get update and sudo apt-get upgrade on my Ubuntu Server 14.04.1 installation and it upgraded to 14.04.2. I shut down the machine for the weekend. When I started the machine ...
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12 views

Direct Shared Connection Traffic to Specific Interface

On Server 2, I have interfaces eth0, wlan0, and wlan1. On Server 1, I have eth0. I want to share wlan1 on Server 2 with Server 1 via eth0. I want Server 1 to only use Server 2's wlan1, and Server 2 ...
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27 views

Cisco AnyConnect network traffic when running on Ubuntu 15.04

I recently upgraded my laptop from Ubuntu 14.10 to 15.04 and found that whenever I open a vpn connection using cisco anyconnect I immediately see a lot of outbound network traffic. This only stops ...
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20 views

How to persist on a wifi connection after disconnection?

I've got a Ubuntu machine running a software that requires internet. However, sometimes the wifi fails (router reboot for example) and doesn't find the network again, until I manually service ...
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54 views

ap-hotspot not working after update to 15.04 (64 bit)

I have recently updated to Ubuntu 15.04 (64 bit). My `ap-hotspot' configuration was functional in the earlier installation. In the current scenario, the devices present around my computer are no ...
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12 views

Ubuntu 14.10 won't connect to a captive portal but will in a vmware client on same machine

Okay I have Ubuntu 14.10 on an Acer c720 Chromebook and have a very strange question. I haven't seen anything like it when searching so I'm asking. I can't get any browser (firefox, Chrome) to bring ...
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17 views

Cannot connect to samba share after upgrading from 14.10 to 15.04

My Blackberry Playbook mounts samba share when connected via usb cable: After upgrading when trying to open share I get following error: ~$ smbclient -L 169.254.0.1 -N Connection to ...
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1answer
73 views

Fresh Ubuntu 14.04 LTS doesn't detect Broadcom BCM4312 Wi-Fi

I just installed Ubuntu 14.4 LTS on 32-bit Dell Inspiron 1545 (that was actually pre-packaged with Ubuntu 10.x in about 2010). For some reason, it doesn't have the capacity to scan for nearby wi-fi ...
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54 views

Torrent being used by another person in the network [duplicate]

I'm using Ubuntu 14.04 LTS, and I know it comes with Transmission (even through I never used it or any torrent client in Ubuntu). I know that it can be a little dangerous if you use torrent clients ...
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Offline Driver Installation intel(R) 82562V-2 10/100 Network Connection [on hold]

I have recently acquired a Dell Vostro 200 with a missing hard drive, i got a hard drive off a optiplex 720, and it now has GB160, i installed PCLinuxOS LXDE, was ecstatic to boot it up, and when i ...
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1answer
25 views

Remounting SMB shares when changing between wifi/wired networks

I've been battling with this for a while with mixed results. I frequently move my laptop between it's dock (wired) and my couch (wireless). Anytime I switch networks, I have to manually run "sudo ...