Managing and using network connectivity on a Ubuntu system

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61 views

Direct ssh tunnel through a reverse SSH tunnel

I have 3 PCs: A is behind a firewall and cannot be reached from outside the local network B is outside the A network, has a public DNS but cannot see A C is a laptop without public DNS that often ...
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3k views

Integration multiple internet connections ISPUnity vs Ubuntu Bonding

I have Ubuntu 13.04 with 2 ethernet cards and a WiFi card. I also have 3 ISP connections. I have to configure linux to use all 3 connections. My main concern is to increase outgoing bandwidth (FTP ...
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244 views

Ubuntu 14.04 - Wifi keep disconnecting - thinkpad t450s - Realtek wireless

The wifi connection disconnect many times per hour. The problem only occurs at my work, not at home. Maybe there's something to configure about the wireless driver or something... Here's the driver : ...
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86 views

How to wake my PC with any packet, not just a magic packet?

Currently, I can wake my PC by sending a magic packet from another device on the LAN. However, the PC will not power on when I send the packet from outside the network (WAN), even though I have my ...
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239 views

Failed to mount Windows share: Invalid argument

A very similar question has been asked before by robazefa, but no one answered it. For the last month or so, my Ubuntu 14.04 LTS box has been been unable to open a couple of folders shared from ...
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1k views

Configuring Huawei E3276 modem

I'm having trouble with my mobile broadband modem (Huawei E3276) on Ubuntu 14.04. lsusb output: Bus 002 Device 024: ID 12d1:1506 Huawei Technologies Co., Ltd. E398 LTE/UMTS/GSM Modem/Networkcard ...
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301 views

(32) Ad-Hoc mode is not supported by this device. - 13.10 on i5 NUC

Not sure if this is an Ubuntu issue or intel issue. Any insights will be appreciated. I have an intel NUC (D54250WYK) w/ intel 7260 wireless adapter and Ubuntu 13.10. I can connect to my local ...
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454 views

Juju bootstrap node can't access Ubuntu archives via MAAS

I am trying to install MAAS and Juju on VirtualBox. The network configuration of VirtualBox is set to NAT Network. Everything is just fine. I am able to PXE boot. But when I start juju bootstrap, ...
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213 views

Setting priority of wireless networks in KDE Network Manager

Is there a way to determine the priority of wireless networks? The KDE networkmanager applet works fine, but it often connects to the WRONG wireless network by default when multiple networks are ...
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532 views

Modifying sysctl values inside lxc container

I have made several linux containers using the normal userspace tools (not docker), and I have been setting up a test environment. I want to set up two containers to try out heartbeat, which requires ...
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265 views

Installing Fritz Wireless USB Adapter

How do I install a Fritz USB wireless adapter on Ubuntu so I can access the internet? I have the software required, but I am not sure what to do next. Ubuntu version 13.04. Output of lsusb: ...
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2k views

Error During Apt-Mirror Unattended Install Of Ubuntu Server 12.04 Over Network Using PXE

I'm attempting to PXE boot and completely rebuild a new server with an "Ubuntu 12.04 Server" image over the network using apt-mirror but I get multiple errors mid-way through the installation. I am ...
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613 views

Network Connection Failure: “network disconnected”

I'm using Ubuntu 12.10, and have a Zantel modem (model: Huawei ec122) which is a cdma modem. I have been trying to connect to the internet but every time it loads it says "network disconnected" Does ...
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800 views

Set master mode on a realtek rtl8192ce

The supported interfaces of the network adapter include also AP. But when I try to set the card on Master Mode with iwconfig wlan0 mode Master, I get the following error: Error for wireless ...
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3k views

Playing Age of Empires II multiplayer in VirtualBox Over wi fi network

I installed Age of Empires II (Expansion) in VirtualBox (hosting Windows XP). It works great in single player mode. Unfortunately, I tried playing multiplayer via WI-FI which I created on my Ubuntu ...
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2k views

How can I configure a Canon Pixma MG5300 to print wirelessly?

How can I configure a printer to print wirelessly in ubuntu 12.04 ? I have a canon pixma mg 5300 series, and I am able to print correctly by usb (the drivers were installed). Now I'm trying to do it ...
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820 views

How can I tell Ubuntu to keep the correct routing table?

Ubuntu sets a wrong routing table if the router is switched off and on again: Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.1.1 0.0.0.0 ...
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34 views

RTL8812AE cannot connect to 5ghz networks

I recently purchased a PEX867WAC22 PCI-E wifi card from StarTech (RTL8812AE), and have not been able to connect to any 5 ghz network due to authentication timing out. The driver it comes with is only ...
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19 views

Share internet connection to distribute ubuntu nodes sitting behind master

I'm working on setting up a 20 node distributed system. The data nodes are hp Compaq 6500 pc's running Ubuntu 12.4.5. The master is connected to the internet and I've configured the IP's of the nodes ...
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10 views

Why My ZTC Grameenphone internet 3g is mount failed?

My ubuntu version is ubuntu 14.04 lts. When I'm plug in the device then following massage are show: Error mounting /dev/sr1 at /media/mohammad/GP Internet: Command-line `mount -t "iso9660" -o ...
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20 views

USB stick breaks the network access

Recently I've got a brand new Sandisk Extreme usb stick. It contains a NTFS file system and a encrypted NTFS folder that I can read/write on a Windows machine without issues. But when I plug it into ...
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73 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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17 views

Force users to authenticate

I have set up an Ubuntu server as a firewall/gateway router following the article here: https://rbgeek.wordpress.com/2012/05/14/ubuntu-as-a-firewallgateway-router/ Everything seems to work fine, but ...
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33 views

Aventail VPN tun0 dropping all packets

I'm using Aventail 10.7.1.449 on Ubuntu 14.10 and cannot connect via VPN anywhere, because all packets after the fix one are dropped: tun0 Link encap:UNSPEC HWaddr ...
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50 views

How to get bluetooth serial port tx/rx buffers status?

The problem comes from that I have to send data via bluetooth serial port from a tiny robot to my laptop at baudrate 115200, robot sends 32-bytes packet every 10ms (100 times per second). Transmission ...
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0answers
47 views

WiFi keeps dissappearing

I have an HP Pavilion dv4-4065la. I've been using ubuntu 14.04 since last year (before I was using Windows...so yeah, I know nothing about linux) and nothing bad happened before, but some days ago the ...
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56 views

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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0answers
112 views

DNS problems, IPv6 not working on ubuntu 14.04; windows or an ubuntu live cd works fine

Ubuntu 14.04 was working fine yesterday. I think I installed some routine updates. Today when I booted up my computer (a thinkpad x220 laptop) I could not get a wired internet connection (there were ...
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0answers
34 views

Where do I put a dyndns script for IPv6?

I am using: /sbin/ip -6 addr|grep -v temporary|grep 'scope global'|grep -oE '([0-9a-f]{0,4}:){1,7}[0-9a-f]{1,4}' to grep my global, non-temporary IPv6 address, that is advertised by my router using ...
2
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0answers
135 views

Ethernet Lights Not On When Cable Connected And Not Working

I have two OS and second OS connects to internet easily, so it's not a hardware problem. The output of lspci is: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM ...
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0answers
85 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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0answers
56 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 ...
2
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0answers
92 views

Neutron Quantum Gateway vs Neutron API, which charm to use?

We are running 14.04 Trusty/Juno and when deploying "Neutron" we have a question of which charm we should use or if both are to be used. Quantum Gateway or Neutron API or both. The charm ...
2
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0answers
136 views

How to be more specific when configuring vlans at Openstack Neutron with Juju?

I have a Openstack Juno deployment, based on MAAS and Juju charms. Im using neutron networking, with neutron-api, neutron-openvswitch and quantum-gateway charms. I would like to be using vlan in my ...
2
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0answers
182 views

Ubuntu 14.10 - Lenovo E420 - Wireless is not working

Earlier till ubuntu 14.04 the wireless was working for lenovo thinkpad E420, in ubuntu 14.10 it stopped working. Earlier for ubuntu 12.10 Modified /etc/modprobe.d/blacklist.conf and put an entry near ...
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0answers
65 views

Cant have both wireless and wired connections enabled at the same time

I have installed Ubuntu 14.10 recently and I have a problem with accessing my storage server via eth0 and connecting to Internet via wlan at the same time. I have to disconnect one of them to use the ...
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0answers
115 views

How do I force nmcli to reconnect to different uuid?

I have a bash script that checks my network environment and mounts shares accordingly. If I'm at work and have a hard-wire connection to the LAN, then I'd like to activate a hotspot connection for ...
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0answers
619 views

no wireless connection on ubuntu 14.04 of my ASUS laptop TP500LA-CJ059H with Wireless: 802.11b/g/n

Here are the information about wireless on my laptop. Thanks in advance. ########## wireless info START ########## Report from: 21 Oct 2014 15:20 WST +0800 Booted last: 21 Oct 2014 15:01 WST +0800 ...
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0answers
56 views

Wireless hotspot problem

My Ubuntu laptop connects the Internet though data card. When i try to use it in my mobile by turning on wireless hotspot in laptop i couldn't find any networks in my search result in the phone. I had ...
2
votes
0answers
46 views

How to change pptp vpn remote password 12.04

I'm looking for a way to change my pptp VPN connection password on the remote server, is there any way to do this? I know that from windows if the password expires the connection automatically prompt ...
2
votes
0answers
176 views

How to trick android and ios devices into thinking they are connected to the internet

I have an ubuntu machine setup as an access point, but it is not connected to the internet. I simply want to transfer data between it and smart phones. The problem is, all devices seem to want to ...
2
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0answers
140 views

Wake-on-lan from suspend

I am trying to wake up my laptop from suspend using WOL but it didn't work at all. I found this old post for the same problem but I don't see how I can do this for Xubuntu 14.04 that I am using. I ...
2
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0answers
44 views

Why the programs don't connect to internet except for the browser?

I solved a problem of getting a "DNS resolving failed" in my computer, now I can surf through internet with the browser without problems but programs, such as: dropbox, spotify, mendeley desktop ...
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0answers
63 views

Are there differences between ubuntu server 12.04 and 14.04 in network configuration during the installation?

I decided to turn my old laptop into a server just to learn about servers and linux. I installed the ubuntu server 12.04, I chose my wireless connection during the installation and I installed the ...
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0answers
63 views

How do I find which OS layer (iptables, rp_filter, etc) is dropping a packet?

Let's say that I'm running a ping towards a machine and I see from tcpdump that the icmp echo reply is being received at the ethernet port but the ping program is not getting it. So I know that ...
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0answers
368 views

Ubuntu 14.01 LTS can't access some websites

Something is wrong with Ubuntu Kernel and Windows DHCP,DNS Server. First i will explain my problem in few words and then ill post all my configurations. My ubuntu computer is behind a all-in-one ...
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0answers
320 views

Why are browsing samba shares from Ubuntu (Nautilus) so much slower than browsing from Windows

I have a samba share over the a vpn server. Browsing the share takes 60 times longer from Ubuntu than it takes from Windows. From a Windows 7 Virtual Box (and any other machine in the shop) it takes ...
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0answers
62 views

How do I create a DHCP server, with a router that doesn't allow me to disable DHCP?

I have an Actiontec V1000H Modem/Router from my ISP Telus, they have blocked access to all their 'advanced' settings like DHCP/Bridging. I have setup a MAAS server I have a few things I'd like it to ...
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0answers
356 views

Ubuntu 14.04 - Network problems (wireless and DNS)

I have seen a very similar problem on post: Cannot resolve dns on 12.10 install but with no clear answer and my problem is related to Ubuntu 14.04, another particularity is that this problem started ...
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131 views

Wifi and ethernet networking stopped working in ubuntu 14.04

I have a System76 Kudu Professional version kudp1, it came with ubuntu 13.10 but I upgraded it to 14.04. After the last upgrade I did it stopped detecting ethernet and wifi networks. nm-tool output: ...