NetworkManager is a set of co-operative tools that make networking simple and straightforward.

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How do you make sure that new hostname is successfully broadcast to the network?

I am trying to reset my hostname, but I am not sure if the broadcast is successful or not, is there a way to check? user:~$ sudo hostname newhostname user:~$ sudo dhclient sudo: unable to resolve ...
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63 views

Cannot Connect to WPA2 Enterprise on Ubuntu Phone

I wrote a NetworkManager config file by myself and I also tried the one mentioned by Stunts in this post. I put each of them into /etc/NetworkManager/system-connections/ but nothing happens. I ...
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1answer
119 views

Network manager core dump 15.04

I am trying to get someone to respond to this question: Ubuntu 15.04 reboots by itself But in the meantime I get this on Uuntu 15.04 nm-applet (nm-applet:4109): nm-applet-WARNING **: Cannot grab ...
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1answer
52 views

Apartment Network Issue

Ok so I'm trying to SSH into my home machine from work/school. Problem is, even though I set up my router appropriately, I can only ssh into it when I am in my apartment's network (not my own ...
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1answer
130 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
85 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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1answer
188 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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1answer
62 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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13 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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27 views

VPN Configurations lost after boot

I had VPN connections stored in network-manager and everything worked like a charm. However, i recently deleted all my VPN connections and added new ones and now, after every reboot they disappear. ...
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2answers
87 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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1answer
258 views

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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19 views

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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148 views

Creating a WWAN profile in NMCLI, or alternate way of connecting to 3G via CLI?

I need to connect to the internet via a TP-Link MA260. After spending hours with usb_modeswitch and other tools, I finally got the device to be recognised as a modem and have the interface wwan0. ...
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19 views

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
63 views

Different proxy servers to diferent networks

I'm looking to a alternative to configure a different proxy each time that I connect to a different network. By example: Network 1 (cable) - Servers - proxy 192.168.0.1:3128 Network 2 (wireless) - ...
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2answers
203 views

Network manager applet doesn't show wired network connection

I have the latest installs of network-manager and network-manager-gnome. I installed Ubuntu Server LTS 14.04, then installed Cinnamon on top of that. I have LAN network connection (can browse, etc.). ...
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38 views

Reconnecting interface from nmcli

I'm writing application in which I have to disable all network interfaces. Because nmcli nm enable false is only temporary (and autoconnects after some time), I use nmcli dev disconnect iface ...
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1answer
235 views

Can't connect to my dsl connection in ubuntu 15.04

After the recent upgrade, when I tried to connect to my dsl, it shows like this.. Connection activation failed. (1) Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/5' ...
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1answer
154 views

Xubuntu's Network Manager cannot detect wifi on Lenovo G450 laptop

I just recently installed Xubuntu 14.04 on dual boot in my Lenovo G450 laptop. For some reason, I can only connect to the internet on an ethernet cable since the Network Manager fails to detect any ...
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50 views

“wicd needs to access network cards” at startup

I find that every time I start up my machine (ubuntu 14.04 with xfce 4.10), wicd prompts me for a password before it will startup the applet. In contrast to what some other people have posted, my ...
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59 views

Wireless network icon won't display on the panel

I check the nm-applet on the terminal and this is what it showed up I search on the web for possible solutions for that and i tried it but it doesn't work out.
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2answers
3k views

Why nm-tool is no longer available in Ubuntu 15.04?

Why is the nm-tool command line tool not available in Ubuntu 15.04?
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22 views

Ubuntu 14.04 lts not booting in new location

When at home, my laptop boots and operates perfectly, including the WiFi. However, when I take it to work, the boot process is interrupted. The graphical envirmonment appears, but nothing works. I ...
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109 views

cat: /var/lib/misc/dnsmasq.leases: No such file or directory

I've searched all over the internet, but couldn't find any answers of my problem.. I want to connect my Raspberry Pi to my laptop. But whenever i try to check the ip address of my raspberry, i get ...
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35 views

Having problems with negative monitor channel, intimidated!

When I try this command: aireplay-ng -1 0 mon0 -a xx:xx:xx:xx:xx:xx I get this output: No source MAC (-h) specified. Using the device MAC (xx:xx:xx:xx:xx:xx) 17:51:23 Waiting for beacon frame ...
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41 views

long delay to connect to vpn with network-manager

I upgraded from 14.10 to 15.04 and since then it takes ages to connect to vpn (vpnc) from the network-manager. First, I hit this bug which makes nm-applet unavailable at startup. After starting it ...
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190 views

Execute a network script at wake-up with systemd (15.04)

I would like to connect my VPN after wake-up. 1) I have created a script in my home (wakeup.sh) #! /bin/bash (echo "Sortie de veille: lancement de wakeup le $(date '+%d/%m/%Y a %H:%M')" sleep 30 ...
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2answers
128 views

NM broken on new install - not saving oVPN pwd or init mobile PPP

I've (re)installed 15.04 on my X1 Carbon (migrated back from Fedora). Initially I tried restoring /etc/NetworkManager, but that got me nowhere fast, so I reverted to the stock's backup & manually ...
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0answers
63 views

Can't connect with WIFI through nm-applet

I installed Ubuntu Server 14.04 with i3 on my laptop. The reason why I chose for the Server edition is because I wanted a minimal configuration. Additionally, I installed network-manager to help ...
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2answers
304 views

Connect button grayed out in 802.1x authentication dialog

Since I upgraded to 15.04 I can't connect to our office wired network anymore since I can't press connect in the authentication dialog.
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2answers
111 views

How can I update a Network Manager connection from the command line?

I have a bunch of Ubuntu machines on my work ethernet LAN and I need to modify the default gateway. I'd rather not traipse round, interrupt people's work, to right click an applet, preferring instead ...
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2answers
2k views

DSL connection problem after installing Ubuntu 15.04

I have just installed Ubuntu 15.04. I tried to connect with my broadband DSL connection. When I entered the cable it was showing that it could recognize the cable. Then from edit connection I added a ...
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37 views

WiFi and Lan Network is not working - Ubuntu 12.04

I have a problem with my network connection. I have been using the same laptop with Ubuntu for more than a year, and suddenly yesterday all the connections stopped working (both wireless and wired). ...
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1answer
3k views

Ubuntu 15.04 network manager causing slow boot

Since upgrading from 14.10 to 15.04 a few days ago the boot time, grub OS screen to login screen, has increased from 12 seconds to about 40. This is my systemd-analyze critical-chain output: The time ...
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0answers
50 views

Blocking a domain with dnsmasq - is dnsmasq.conf being ignored?

I'm trying to block a particular domain by having it resolved to 127.0.0.1. I set up /etc/dnsmasq.conf to block this domain, like so: $ cat /etc/dnsmasq.conf address=/blocked-domain.com/127.0.0.1 $ ...
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99 views

How to run OpenVPN as unprivileged user with Network Manager?

Recently I noticed that when running openvpn as a client on my friends Ubuntu Gnome 14.10 system, the actual openvpn deamon is running as root. $~:ps aux | grep openvpn root <xxxxxxxxxxxxxxx> S ...
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3answers
678 views

No WiFi on a system76 laptop after upgrade to 15.04

I just upgraded System76 Gazelle laptop to 15.04 and wifi no longer works. It sees many networks and tries to connect to mine, but fails repeatedly (/var/log/syslog seems to indicate authentication ...
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2answers
546 views

Can't get online after installing Lubuntu 15.04

I upgraded to Lubuntu 15.04 yesterday. I originally installed Lubuntu at school several months back, so it was done using the school's Ethernet connection. At home, I set up my own DSL connection, ...
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1answer
58 views

ubuntu 12.04 File Permissions or owner were insecure

Let me explain a little bit about what i am trying to do, i am trying to manage Network Manager files via a non root user and i keep getting the error message that says: keyfile: updating ...
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3answers
88 views

DNS not working after upgrade from 12.04 to 14.04

I've recently upgraded my desktop from 12.04 to 14.04 and now my internet connection isn't working. I can access my router. I can go to Google by entering its IP address. My resolv.conf file: ...
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1answer
90 views

dnsmasq disabled on Network Manager

When I first started using Ubuntu, it would always use dnsmasq. I mean when I would enter $ nslookup www.bing.com The result would come from 127.0.0.1. But after installing and configuring ...
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83 views

Activating VPN fails always after temporary loss of internet connection

I have a few correctly set up VPN connections and use them frequently with nmcli. This works most times, but occasionally I can't connect any more with none of my saved VPNs: ...
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1answer
69 views

Xubuntu - missing checkbox “connect VPN automatically”

I'm trying to make my VPN connect automatically (on startup or when I got disconnected from Wifi) and most of users have a checkbox directly in network-manager. I don't. I thought I have old ...
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1answer
21 views

How to broadcast a folder in network of class B network?

I want my specific folder on every pc which is in common network of my college so how to broadcast that folder is there any command like ssh? please help me fast.
1
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1answer
79 views

Unable to set proper routing between two networks

Three boxes running three different ubuntu flavours (14.04, 14.10, 15.04). I'm trying to get all of these to talk between themselves, while being on different subnets, and I can't figure how, yet. ...
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45 views

"How do I find BOOTPROTO information for eth0

Where can i get BOOTPROTO information in ubuntu? File "/etc/NetworkManager/system-connections/Wired connection 1" doesn't contain BOOTPROTO information.
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1answer
53 views

Where does Network Manager write connection settings for eth0?

In Ubuntu I have configured network through network manager. Every thing is working fine.My machine is pinging self machine as well as remote machine. but file /etc/network/interfaces doesn't contain ...
0
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1answer
58 views

Ubuntu 14.04 ethernet connection using graphical network manager

I am trying to connect Ubuntu 14.04 to the internet with an ethernet cable. I have turned wireless off. The cable works off a Windows laptop that I am using now. When I plug in the cable 'wired ...
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0answers
39 views

Only allow one random IP access a specific port

I have seen a SOCKS 5 proxy service provider, it provides: Basic package: the same account (corresponding to a specific port) only one terminal at the same time Platinum package:the same account ...