Managing and using network connectivity on a Ubuntu system

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Canon iR adv c5235 on 1604 driver creates error

After installing 1604 MATE and using all thoughtout options, printer will not print without an error. I installed driver from Canon website and tried then installing the printer, but printer is not ...
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NetworkManager[757]: <warn> [1461836136.9728] (wlan0): error getting signal strength: No such device

I get this error in the syslog and kern.log: NetworkManager[757]: [1461836136.9728] (wlan0): error getting signal strength: No such device I have both an ethernet and wifi connection: ...
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18 views

Minecraft server problem

I have a problem with my server minecraft server. My server is hosted on Ubuntu 14.04.4 LTS (Server version, not the desktop) at my home, so my problem is: I can run my server but I can't join my ...
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Can't connect Usb modem on Lubuntu 16.04

My usb modem is detecting in network manager, however on clicking connect button, it keeps on going for few minutes and disconnects thereafter. Please see output of various queries below- lsusb: ...
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2answers
24 views

Troubleshoot personal internet failure

I have Ubuntu 14.04 and we have Wifi in the house. Lately (every 2 days), my laptop fails to connect. The Wifi sign loads forever (you know the white lines going bottom-up recursively). The issue is ...
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10 views

Auto Printer Authentication

We have a few Ubuntu machines connected to Active Directory. I'd like to connect our networked printers to them (shared over SMB). Is there a way to automatically authenticate using the username and ...
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3answers
28 views

Upload dialogs for Firefox and Chrome now differ; FF's doesn't include network drives

As long as I can remember (and I've been running 14.04 LTS since its release!), Firefox and Chrome have both used the same upload dialogue for, e.g., Gmail, or StackExchange image uploads. Chrome, ...
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8 views

I want to add Windows Server 2008 Domain to bind

We want to replace DNS Server which is currently Running in our Windows Server 2008 R2 to Ubuntu Server Bind9 Service. I have to somehow add or tell Ubuntu Bind to use example.local as our main ...
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13 views

Kubuntu doesn't want to connect to known networks anymore, only new ones

This problem happened all of a sudden, without an upgrade or so being done. I have had no trouble connecting to networks in the past. Since a few days ago however, I can't connect to existing ...
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22 views

Ubuntu 14.04 check wireless network adapter is working or not?

I have asus P53E laptop with running ubuntu 14.04. All thing was going on good. But suddenly I can see that the wireless is not working. I made several restart the system also googled over thousands ...
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18 views

How to Share existing ntfs partition to windows network with specific users

Im a newbie in Ubuntu so I need all the help I can get. Here's my situation: I have an hdd with 2 NTFS partitions: 1. Windows System & 2. Data What I would like to accomplish is to put this hdd ...
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21 views

MAAS virbr0 interface created

MAAS server had two interfaces eth0 external net and eth1 internal (for pxe boot). Somehow I am seeing a virbr0 under interfaces and an IP assigned to it. Not sure where that interface and its IP came ...
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72 views

rtl8723be drops wifi connection on hp pavilion notebook ubuntu 16.04

I have recently bougth a HP Pavilion Notebook and performed dual boot with ubuntu 14.04 lts and noted that no wifi networks on first boot. I've searched a lot (really) and did lots of stuff (installed ...
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46 views

IPtables Config to Passthrough Internet 16.04

I am struggling to finish the config on my Ubuntu 16.04 fileserver to pass on the internet connection to my HTPC. See the network layout below: [Internet] <--> [DHCP Router] <--> ...
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which file contains network configuration for MAAS?

Ubuntu : 16.04 MAAS: 2.0.0 beta 3 Which file contains network configuration for MAAS?
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Bind9 Name Server slave having master file transfer problems

I have a master name server set up and now I am trying to configure the slave. Bind9 appears to load and run fine, however I am getting the following error: Apr 27 12:47:21 ns2 named[23563]: dumping ...
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14 views

bq E5 phone Network Error when logging in to my UbuntuOne Account

I cannot log in to my UbuntuOne Account from my bq Aquaris E5 phone anymore. It always tells me network error, but the network is working (can use the Browser) and the credentials are correct. My ...
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154 views

Can't connect to smb share after upgrade to Ubuntu Gnome 16.04

After upgrade to Ubuntu Gnome 16.04, I can no longer access my networked media tank's smb share. It's an old (2009) Popcorn Hour A-110. When I connect to server smb://192.168.0.5 in nautilus, I get ...
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how do i reinstall wifi card drivers

I'm very new to Ubuntu but (like an idiot) I decided that it would be a good idea to play around in the terminal. I was trying to fix Firefox as it was terribly slow. as far as I can tell my computer ...
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55 views

Ubuntu 16.04 Tor Transparent Proxy

I want to setup an Ubuntu Server 16.04 to act as a transparent proxy for all traffic from a specific subnet to Tor. To be specific, I want all traffic on a subnet 10.20.0.0/16 when using the Ubuntu ...
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2answers
57 views

How to install RTL8723AE driver on ubuntu 16.04?

I'm trying to config ubuntu 16.04 on a MSI s12 notebook, but the network adapter (RTL8723AE PCIe Wireless Network Adapter) is not recognized by ubuntu. $ iwconfig syas: lo no wireless ...
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170 views

Why Wired Internet is not working in Ubuntu 16.04 LTS?

You know, I was waiting for this release from last 3 months eagerly. I even downloaded it through torrents to help in anyway I can. When I installed it and I saw that it doesn't recognized my ...
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48 views

Unable to connect the weak wifi signal to Ubuntu 16.04

I have Ubuntu 16.04 installed in my computer, I have Broadcom Wifi in my computer. This wifi is not able to connect to the weak wifi signals around the computer, these are connected by my friends' ...
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24 views

DNS lookup sometimes failing for git clone

Every so often when I try to clone or pull a Git repository from my private hosted Gitlab server I get an error stating that the name or host could not be resolved. I figured this was because a DNS ...
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1answer
28 views

Set specific network interface for internet access (II)

I am using Ubuntu 14.04 with MATE, and my problem is that when I use a local Ethernet cable to access local network via a router (which is not connected to Internet), and at the same time Wireless (or ...
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Unable to understand ifup/ifdown proceedings

I am trying to setup virtual ip for ucarp. But after configuration something strange happens with ifup ifdown as try to view the configurations. I change /etc/network/interfaces like # interfaces(5) ...
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79 views

Problem when setting 802.1x authentication in Ubuntu 16.04

I live in a campus and we need to set certificates and private key in 802.1x tab to connect. The problem is that when I try to add the private key, it says: "Unencrypted private keys are insecure" and ...
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13 views

Proxychains error

I got some difficulties in running anything through proxychains for example bridie (twitter client): **First of all due to ISP blocking, I need to run most of network apps through tor. And Tor browser ...
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1answer
45 views

problem to use plasma-nm on xubuntu 16.04 (Solved)

I used to install and setup hotspot that support android phones using the plasma-nm package but in this fresh installation of xubuntu 16.04 it's not working each time i try to setup the hotspot it ...
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45 views

Slow connection to linux servers

My connection to my servers is slow. When i try to download directly from my dedicated server (hetzner server 1gbit duplex with 200 mbit guaranteed upload) i get around 5 mb/s of download, while my ...
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Is it possible to offer a DHCP lease between 8am and 5pm and block access otherwise?

I am wondering whether dhcpd can be setup for some leases to only work between certain work hours instead of 24/7. I know I could use CRON and restart the DHCP server with configuration A (allow ...
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1answer
21 views

Broadcom BCM4352 not showing all wifi networks

I have a 2015 Dell XPS 13 (9343) with Ubuntu 16.04. Wifi is working using bcmwl-kernel-source 6.30.223.248+bdcom-0ubuntu8 and everything works fine except that I cannot see all wifi networks around, ...
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85 views

Realtek RTL8188EE drivers in Xenial?

I just updated my pre-Secure Boot, pre-UEFI* Toshiba 2012 Satellite P755-S5390 laptop from 15.10 to 16.04. In 15.10, the wireless adapter worked fine. Now, Ubuntu refuses to acknowledge my laptop has ...
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WiFi is off and cannot be turned on

Installed Ubuntu 15.10. While installation the WiFi was turned off forcefully and cannot be turned on. Cannot find any help within the system to reach the hardware status to enable it. Any help.
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Wired Connection Icon shown in Menu bar, although connected to a Wireless network

I recently installed Ubuntu 16.04 LTS in my laptop. I connect to a "Wireless connection", provided by my hostel. It devices connected to the wireless connection have to access the web through a proxy. ...
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Websites not loading in Ubuntu in both chrome and firefox

I am running ubuntu 14.04 and i am using a DSL Connection.From last few days i am having problem in loading some websites like ubuntuforums, hackerrank, mdn etc. I have tried alsmost all solutions ...
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77 views

Can't connect to Internet via Ethernet wire

I've instaled Ubuntu 16.04 yesterday, next to Windows7. I am connected to router via Ethernet wire - it works fine on W7, but on Ubuntu I can't see any website, and can't ping anything. WiFi ...
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2answers
252 views

No Wifi in Qualcom Atheros - Ubuntu 16.04 - Acer Aspire E 15

After Installing Ubuntu 16.04 in Acer laptop with Qualcom Atheros , it does not work. I tried , sudo rfkill list all 0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: acer-wireless: ...
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Conserve public IP access when using VPN

A remote computer with Ubuntu 12.04 LTS has a public IP and has to access computers in my local network. I already have a VPN server launched and the remote computer is successfully authenticating ...
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1answer
44 views

(wired) network down after a while with 16.04

I'm running 16.04 since a few days, and I'm noticing something: after some time (hours or days - I quite never shut down this computer), the network connection stops working. I can't connect to ...
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24 views

Ethernet connection is not working after suspend ubuntu 14.04 only restarting MANUALLY the network manager works [on hold]

Ok, first at all, I've seen this exact same question many times in many sites with many solutions and none of them works for me. I'm using Elementary OS Freya = Ubuntu 14.04 32 bits at the time of ...
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89 views

no wired connection after upgrade to 16.04

After upgrading from 15.10 to 16.04 (64bit both), I can no longer establish a wired connection to the internet. I am using a desktop PC without wireless card, so I am relying on ethernet. The cable ...
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9 views

Sending mail from one system to another on the same network using sendmail?

I am trying to use sendmail to set up a local mail environment in which all of the machines on the LAN can send and receive mail from each other. I am able to send and receive mail on the localhost ...
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1answer
82 views

Lost wifi after 16.04 LTS upgrade (from Ubuntu 15.10)

I'm an Ubuntu newbie, i have an Acer Aspire ES1-520 . Everything was working fine until some days ago when i've accepted to upgrade to 16.04 LTS (64x). Now i cannot use wifi. Is there a way to come ...
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Network Manager Ubuntu 16.04 - wifi connected no wifi networks listed

After I resume from suspend, or disabling WiFi & re-enable or disable networking and re-enable or connecting via ethernet and then unplugging cable, I pickup and connect via wifi internet ...
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21 views

Ifup/ifdown problems in Ubuntu 14.04

I am condiguring my eth0 NIC connection through /etc/network/interfaces file. But each time I changed this file, I ran ifdown eth0 and it responded with waiting for lock on ifstate file and stuck ...
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11 views

Block internet acccess unless VPN is active

I need to connect ONLY through a VPN, so if the VPN is down or the connection to the VPN is lost there should be no routes to Internet available, is this possible? To exemplify: UBUNTU OS MACHINE ...
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8 views

Are there any Linux compatible PCI wireless cards that support wireless AC?

I'm looking for a wireless card for my desktop PC that supports dual band 2.4Ghz and 5Ghz, and also wireless AC. I looked on thinkpenguin.com but it seems they only have cards that support wireless ...
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80 views

new 16.04 install doesnt recognize network devices

just built a server with S2600WT2 motherboard i installed ubuntu 16.04 but no ethernet cards are recognized i looked in the boards drivers and the only network Linux drivers are for redhat or suse so ...
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Bluetooth not working in dell inspiron 15 3000 series 3542 laptop [duplicate]

I have dual boot with windows and ubuntu 16.04. Bluetooth works fine with windows but it doesn't work in ubuntu. I guess it is some driver problem ( not an ubuntu version problem as this problem is ...