Managing and using network connectivity on a Ubuntu system

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Sharing wired internet connection via router

I'm trying to set up a desktop which is running Ubuntu 14.04 to share existing ethernet connection to a router. The existing ethernet connection is an onboard connection and the output ethernet will ...
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1answer
15 views

DNS configured in network manager but not working

I have 2 DNS configured in network manager for my connection (Selected DHCP Addresses only). The DNS are working good if used with nslookup. /run/resolvconf/resolv.conf # Dynamic resolv.conf(5) ...
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MAAS Power-on problem IDRAC IPMI 2.0

I'm currently having a problem in getting MaaS (v1.7) to properly provision a Dell PowerEdge R630 server. The MaaS vm itself is able to detect the server automatically, and once the dell server boots ...
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Wired LAN not connecting

I have a PC running on dual core with a wired networking card. It was an always on connection using BSNL and all was working fine until when the wired network failed to connect. I just tried all the ...
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1answer
27 views

Network error on ubuntu 14.10

I have a ubuntu 14.10 server that took a long time in booting up, when it does boot up, it doesn't with network (it gave me long delays in bootup). dmesg | tail gave [ 225.013622] init: networking ...
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30 views

Network Manager VPNC

I am trying to connect to an Xauth Ipsec VPN, I have entered all my relavent infromation and the VPN seems to fail without an error that I can debug. Uses Username/password, Group name and then a ...
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1answer
40 views

Bluetooth disconnects, when wireless LAN is heavily loaded

Has anybody already had an issue with the Bluetooth Loudspeakers (Bose) that the sound is interrupted or stops sometimes. After some testing I found out if I disable Wireless LAN the connection works ...
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24 views

Ubuntu using wrong NIC for internet connection

I have a machine running Ubuntu 14.04 LTS. It is not permanently connected to a screen, and not within cable range of my router. It uses a wireless connection for internet, and until recently, also ...
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1answer
30 views

My pc is disconnecting automatic from wi-fi [closed]

Laptop : HP pavilion g6 Router : Huawei HG538 OS : Xubuntu Problem is my pc automatically disconnect from wi-fi in 1 hour after boot.
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2answers
47 views

Wake-On-LAN for ASROCK H81M-ITX

I'm using Ubuntu 14.04.1 on an ASROCK H81M-ITX motherboard. I'm pretty sure I have the BIOS configured correctly for wake-on-lan. I read this forum post about what you need to do from the ubuntu ...
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Ubuntu to Windows slow via NFS while everything else saturates gigabit speeds

I've read everything I could get my hands on and I'm still quite stumped. Hoping experts here can help. Everything seems to be functioning quite optimally with my network, as well as my internet ...
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1answer
39 views

Terminal says “Interface doesn't support scanning”

I have been trying to get Wi-Fi to work on Ubuntu 14.04 (I just don't and can't get ethernet) I have been trying too follow the guidline here: ubuntu 14.04 connect to a wifi network using command line ...
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40 views

WiFi keeps dropping out but still shows as connected

I installed Ubuntu the day before yesterday and am still having a few teething issues. Every half hour or so my wireless connection just stops, but is still indicated as online. Disconnecting and ...
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48 views

How can I use Ubuntu server 14.04 to remotely access my homenetwork?

At home I have a server with Ubuntu server 14.04 installed. This homeserver is mainly used for backups and storage of family files within the network (for this I use owncloud). I want to gain access ...
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1answer
28 views

Remove network interface permanently

I'm trying to remove a network interface permanently. For some reason, ifconfig lists eth0 and eth1, although the latter RX/TX metrics remain at zero. I suspect that extra eth1 entry might be causing ...
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42 views

OpenVPN doesn't connect on Ubuntu, but works on windows

Cannot deal with openvpn connection. It works on windows, but on Ubuntu linux 15.04 script end 'Initialization Sequence Completed' and unaccessible .local resources. I checked many links and answers, ...
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1answer
59 views

Ubuntu nat router port forwarding

I have set up a ubuntu server as a NAT gateway. My others desktop client can browse internet without problem. And my bit torrent client also works fine by setting up forwarding in the gateway. However ...
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2answers
66 views

Where in System Settings do I set a static IP?

I can't find where you can set a static IP in the network settings. Anywhere top level?
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16 views

How to share resources connected by USB on a wireless Network (eg HDD, Flash)

I've got two Ubuntu machines running 14.04 LTS connected over a Wireless network. I can share folders on the internal HDD on both machines with no problem but when I try to share a resource connected ...
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78 views

I have a Dell Inspiron 15 3543 with Ubuntu 15.04 as dual boot but wi-fi doesn't work and it doesn't detect the mobile broadband

I bought a dell inspiron 15 3543. i installed Ubuntu 15.04 as second boot option , but it does not detect any wi-fi signal. Also it does not detect the mobile broadband when i plug it in the usb ...
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1answer
34 views

Reset network settings to what Ubuntu installs

The problem is I messed up lots of files (such as networkmanager.conf) and other because my laptop was not connecting to an ad hoc network, it connected to other hotspots like my androids shared ...
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12 views

Network manager can find all but the default network on startup

I recently installed Ubuntu and everything is still vanilla except for i3wm which I am using instead of Unity. When I startup Ubuntu it cannot find the default wireless network that I set during the ...
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1answer
34 views

Open ports for public

I am quite new to Ubuntu or any Linux family OS. I am trying to run a server on my laptop (for development reasons, however I have tried this on azure Ubuntu VM too). The server runs on 5222 port and ...
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Firefox/Clementine only use eth0 as gateway but not eth1

hy! I have two nics, that are configured via dhcp, internet is reachable via both: 1) 192.168.15.x gateway 192.168.15.1 2) 192.168.1.x gateway 192.168.1.1 Sometimes 1 is down via the firewall (as ...
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44 views

Wifi interference between phone and desktop

Since I'm using Ubuntu I'm having problems with the wifi. It connects correctly, and I can use internet for some time, but suddenly the internet stops working. It says that it's connected, the icon ...
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42 views

“enable wifi” is disabled in ubuntu 14.04

i am using dell inspiron 14 and Ubuntu 14.04. Suddenly "enable wifi" option in taskbar right side network menu us disabled and not clickable. As i remember, i was using wifi hotspot option for the ...
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1answer
26 views

How to configure apache and iptables to allow incoming connections ubuntu server?

I am trying to configure my server to allow apache running on port 80 to allow incoming connections. I ran this command sudo iptables -A INPUT -i eth0 -p tcp --dport 80 -j ACCEPT But Still I can't ...
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Problem with two network cards with differnt vlan networks

I have a virtual machine with Ubuntu Server 14.04.2 installed. This virtual machine has two network cards which are in two different vlans: eth0: vlan1, ip 10.10.51.240, mask 255.255.255.0, gw ...
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2answers
42 views

How does the system admin gets the ethernet address of computers in the network?

I am very new to system administration. Have a doubt, how does the system admin gets the Ethernet address information of the computers in the network. Actually my doubt is how does he determine the ...
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30 views

Ubuntu Network problem on startup

I have been running an ubuntu server for a while now without issue. We recently lost our internet connection for weeks so had to try to get the server to work with a 4G mobile Broadband usb dongle. ...
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99 views

Acer Aspire 5560 - Wireless Network Doesn't Work on Ubuntu 15.04

According to the system, wireless networking is enabled, but the issue is that you can't actually see any wireless networks to connect to, even though there's plenty of them around. Ethernet however, ...
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20 views

Reset static routes?

I'm messing around a Mikrotik router to make multicast IPTV configuration. Trying some manuals I've been messing with routes command at some point, thinking that it would just not be permanent, as ...
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2answers
52 views

SOLVED - Cannot connect to network using a WiFi USB Adapter

This question has been solved. Thank you for all your help. The solution was just to downgrade. Didn't even need to install the OS for it to work, it worked inside the installer. My mother's old ...
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1answer
10 views

samba username case issue in samba 4.x

I have a problem with a samba service on my server. It's began since ubuntu have switched to samba 4.x in their distributions and continues til last one 15.04. I have a user ag on my server and user ...
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19 views

Can't get on wireless networking. I'm having a proxy problem

I just installed Ubuntu 14.10. I'm having no trouble accessing the Internet through the wired Ethernet connection. I have all the settings set up for a wireless connection. However, when I click on ...
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2answers
34 views

How can I completely reset wifi settings?

I know this question has been asked before and I have yet to find an answer. Is there a way to completely reset wifi or networking settings of ubuntu 14.04 LTS? I want to reset them, not fix an issue ...
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1answer
40 views

Port forwarding to local server

I want to be able to access a server which is running on my local machine via the Internet. I setup port forwarding on my router: Public Port Range: 80-80 Target IP Address: 192.168.0.4 Target Port ...
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1answer
29 views

Bios/Firmware/EFI upgrade changed network port config

I did a EFI/firmware update on an Intel server board and the next thing I see is that the networking just stopped working... Little deeper and I saw that the NIC port labels were changed from em1, em2 ...
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25 views

Internet wired connection holds only few seconds/few requests before needing to call dhclient again

I have a dual boot ubuntu/windows 8, everything was working fine, suddently, after a reboot from the linux partition, the DNS resolution seems to be in trouble : I have to run dhclient before each ...
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31 views

DHCP server on subinterfaces

I have created two subinterfaces on eth0 : eth0:0 with IP 192.168.10.1/24 eth0:1 with IP 192.168.11.1/24 Configured /etc/dhcp/dhcpd.conf like that: option domain-name-server 194.204.159.1; ...
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Set preference on wired network connections

I am running Ubuntu 14.04 LTS with Unity on a Laptop. I have configured two different wired Connections named "home" and "office". I use the work connection more often than the home connection. ...
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1answer
27 views

How can I setup an Internal Network with Virtualbox? (Ubuntu 14.04)

Hi I've been trying to setup an Internal Network with two Ubuntu 14.04 virtual machines. But I've been unsuccessful so far. They both have the Internal Network adapters with the same network name, now ...
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14 views

Cant connnect wlan on recovery mode

I am trying repair and fixing my Kubuntu after failed update my kubuntu form 14.04 to 15.04, i know how to repair but i have need first turn my internert on i am trying this on root shell (yes in ...
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1answer
17 views

Installing Tripwire

I just installed a fresh version of Ubuntu 15 and while I installed it I did not connect to the Internet. I have read you should install tripwire first thing after a fresh install and before you even ...
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Trouble with configuring networking devices

I have a dual boot system. With Windows in the other partition. My wifi-hotspot and bluetooth works perfectly there but in ubuntu i face this issue where in hotspot creation says that there is only ...
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3answers
455 views

How to open shared SMB resources in the form “\\host”?

I want to download data from my university local server, whose IP is like 10.1.2.3. From Windows I could open Run..., type \\10.1.2.3, and the local server window opens. How is it possible to ...
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wifi connected and after some time no internet access ubuntu 15.04

my wifi shows connected and works fine for a while but after some time i am not able access internet but the wifi remains connected in ubuntu 15.04 . i have HP Pavilion 15-p045TX with BCM43142 ...
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58 views

Wifi conneceted but no internet and it Disconnects Ubuntu 14.04.1

I'm using : Ubuntu 14.04.1 LTS X64 bit on Lenovo Y50-70 Wifi have been crazy on Ubuntu I'm connected to my home wifi network with security : WPA2 PSK after booting my laptop and connecting , I've a ...
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Make Ubuntu set custom DNS for new connections by default

I am using custom DNS servers. For each new connection I have to add custom DNS servers manually. Is there a way for all new networks to have different DNS servers automatically?
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1answer
78 views

Help with Belkin Dual Band Wireless Adapter AC867

I've been trying to get my Belkin AC867 Dual Band USB adapter to work with Ubuntu 15.04 with no success. I followed this tutorial ...