Questions concerning network connections.

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21
votes
6answers
14k views

16.04 LTS wifi connection issues

I discovered several issues with wifi connection after installing 16.04 LTS. First, wifi doesn't reconnect normally after sleep or hibernation. Sometimes the network icon turns into a "up and down ...
18
votes
2answers
50k views

Wifi problems with rtl8723be in Ubuntu 14.04

I have dual booted my Windows 8 laptop with Ubuntu 14.04. The wifi driver is Realtek rtl8723be. It didn't use to work but I updated the kernel to 3.18 and reinstalled the driver and that seemed to ...
16
votes
2answers
8k views

Is an Internet connectivity indicator applet available for the Unity panel?

Because my internet connection is very unstable at the moment, I'd like to use a small indicator applet for the Unity panel. Since I'm connected through a WLAN/Wifi Router, I can see in the network-...
12
votes
3answers
35k views

What does “ping: sendmsg: No buffer space available” mean?

I had an intermittent issue (which resolves itself spontaneously, after using a different connection for a while) that caused Internet requests to fail, with one particular wireless network. After ...
11
votes
4answers
14k views

Problems Connecting MSN with empathy

I don't know if I am the only one with this bug, but I can't use my MSN account with a freshly installed Ubuntu 11.10 with Empathy. It used to work with my Arch Linux, but now with Ubuntu, it ...
9
votes
5answers
14k views

Why is Steam not able to connect Steam-Network?

This is the output when I try to start steam. It closes with the Message "Keine Verbindung zum Steam-Netzwerk möglich..." (No connection to Steam-Network...) Removing appcache didn't help so far. ...
8
votes
5answers
11k views

Why can't Ubuntu access my Raspberry Pi across LAN?

Okay, I recently got a Raspberry Pi, and I got it connected to my Wi-Fi - I enabled the SSH and installed Hiawatha, and I could access it just fine from my Desktop, which was running Puppy Linux at ...
7
votes
2answers
9k views

What should my MAC address be? (now shows 00:00:00:00:00:00)

I have three computers all wired into my router. The box I'm posting this from is running Ubuntu 11.10, and another machine is running Xubuntu 11.10 Both connected automatically when the ethernet ...
7
votes
4answers
15k views

Strange connections by gvfsd-http --spawner

For a little while now, a strange connection has been showing up on my netstat made by the command: /usr/lib/gvfs/gvfsd-http --spawner :1.1 /org/gtk/gvfs/exec_spaw/2 By the time I notice it, the ...
7
votes
2answers
26k views

Ubuntu 14.04 Network Problem

I have an issue with my Ubuntu 14.04. I am able to connect to wireless networks without any problems, but when I am in my Dorm Room, I cannot connect to my wired Internet connection. It works fine ...
7
votes
2answers
7k views

How do I connect to a VPN in GNOME-Shell?

I used to be able to choose "connect to vpn" from the network-indicator in Ubuntu but since I've upgraded to Ubuntu 11.10 I'm only using GNOME-Shell and I can't find anyway to connect to a VPN from ...
7
votes
4answers
7k views

Is it possible to use nmcli completely without nm-applet?

Since I don't use GNOME now and try wmii, the nm-applet is no longer available for me.I know there is nmcli for the control. What I'm really interested in is that can it really be a substitute for nm-...
6
votes
6answers
6k views

How to get the connected wifi network ssid?

I want to obtain the currently connected wifi networks ssid in a bash script. I am trying to write a backup script where the script will perform a backup to a NAS server if it's connected to my home ...
6
votes
7answers
5k views

What are common causes for greatly decreased internet speeds?

Two days ago I set my computer up to dual-boot with Windows 7 and Ubuntu 11.04. On windows 7, my download speed averages around 500kb/s, regardless of time of day. On Ubuntu, downloading simple ...
6
votes
2answers
526 views

Shell script to ban an IP

Some of the IPs are opening thousands of connections of my server. I have a Ubuntu 14 server. I check total connections using following command: netstat -an | grep tcp | awk '{print $5}' | cut -f ...
6
votes
2answers
1k views

Does the Ubuntu One sync work?

I have been on this for several hours now, trying to get a simple second folder to sync with my (paid) account. I cannot tell you how many times I removed all devices, removed stored passwords, ...
6
votes
1answer
12k views

Ubuntu 12.04 LTS - Apple iPad 3 (iOS 7 non-jailbroken) USB connection problem

I've bought an Apple iPad 3 (iOS 7 non-jailbroken), and I'm trying to connect it to my PC running Ubuntu 12.04 through the original USB cable. After I plugged in the cable, I got this message on the ...
6
votes
2answers
3k views

Unable to connect to wired DHCP connection via my PC?

Hi As I upgrade my pc to ubuntu 11.10 I can't connect to the wired connection ! It doesn't even find my Device MAC address !!What can I do ? ifconfig -a eth0 Link encap:Ethernet HWaddr ff:ff:...
6
votes
1answer
3k views

Unable to login to steam ; Steam is having trouble connecting to the servers

Since Steam came out on Ubuntu (official) I've installed it and tried to log in but it didnt work at that time. I thought the servers were offline and I would try it later again. Steam is giving me ...
6
votes
1answer
626 views

Why does Network-Manager close when it cannot bind to any connection?

When Network-Manager is not able to bind my Ubuntu to any connection, after a while it closes. The icon in the notification area (or indicator area) disappears, and it does not run any more. For ...
5
votes
2answers
19k views

Get a list of network connections my machine is making

On Ubuntu, how do I get a list of network connections my computer has made in the last few days? Is there a easy way to do this?
5
votes
4answers
9k views

'Activation of wireless network connection failed' error with a BSNL BroadBand modem# DNA-A211-I

I'm getting the message 'Network Connection Failed' frequently when I connect to wifi using 12.04. I was using the same connection without any problems, in Ubuntu 10.04 and Windows Vista. What might ...
5
votes
2answers
999 views

How do I tether to a Nokia E61 mobile phone?

I have a Nokia E61 mobile phone with 3G internet connection. When I connect it to the computer via USB cable and choose IP pasthrough, this line appears in the list of network connections: Wired ...
5
votes
2answers
8k views

ssh: connect to host github.com port 22: Connection refused

So I followed the guide on how to add a SSH key to GitHub, and added a new SSH key with a passphrase to GitHub and the SSH agent. Now, if I run ssh -T git@github.com as described in the guide to test ...
4
votes
1answer
2k views

Why do Ubuntu Servers connect to likho.canonical.com:80?

We have some Ubuntu 12.0.3 servers in our network and I can see several denies per day on our physical firewall. The Ubuntu servers are attempting to connect to 91.189.91.15 (likho.canonical.com) ...
4
votes
1answer
8k views

how to clear server or network share connection history in ubuntu 13.04?

How do I can delete connection URL present in file>Connect To Server. for security reasons I want to remove all that connection URLs to which i have connected.
4
votes
1answer
13k views

How to scan an entire network using Nmap?

Is there a way to scan an entire network using nmap? What I want to do is scan my network for all the devices that are currently connected to it.
4
votes
3answers
2k views

How to determine which WiFi technology is currently used in connection?

I would like to check which 'technology' (a/b/g/n) is currently used by my WiFi card for the connection and to check which standards it can use. How can I check that ? EDIT Alright, I have tried ...
4
votes
4answers
9k views

In Wired Connection settings save option is getting grayed out

Each time I switch to manual configuration, of wired connection in Ubuntu 12.10, the save button gets grayed out. As soon as I start setting it in Manually, it gets grayed out.Please help ! One ...
4
votes
3answers
12k views

MSSQL connection from Ubuntu

I need an easy and complete tutorial for making a MSSQL connection from Ubuntu. I think I installed FreeTDS and UnixODBC but configurations are very complicated I didn't understand the issue. I ...
4
votes
2answers
6k views

Problem Internet connection Ubuntu 12.04 Server (trough VirtualBox)

My final goal is to access my web projects trough external network. So, I have : Internet connection trough wireless router (ISP's IPs are internal, so and the IPs which the router sets to my ...
4
votes
3answers
2k views

Setting up Gmail and Thunderbird in 11.10

I am trying to setup my Gmail with Thunderbird. I put in the details, the imap and smtp settings were filled in automatically. They were correct I checked. Initially when I clicked on done, to ...
4
votes
2answers
4k views

Can I connect my Ubuntu laptop to my HDTV wirelessly?

There are some devices that allow to connect laptops to High Definition TVs. One good example is Intel WiDi device. The problem is that most of them do not support linux/ubuntu. It would be nice to ...
4
votes
1answer
1k views

How to share an Internet connection over Bluetooth from the Phone to the PC

I am on vacation and have a phone (N900) with an Internet connection. I have no Internet connection for my laptop. I'd like to connect the phone and laptop over Bluetooth (second choice: per USB cable)...
4
votes
4answers
297 views

How can I trigger something once I connect to internet?

I wonder how can I make the machine do something each time it connects to internet ? like checking for updates once I'm connected to internet ? Thanks
4
votes
1answer
605 views

How can I prioritize wireless networks with network-manager

Mostly I use my laptop in an environment where different wireless networks are available and I would like to preferably connect to one of those and only fall back to the other one if that one is not ...
4
votes
2answers
5k views

Pidgin will not connect to MSN any longer

About 3 weeks ago, pidgin stopped connecting to the MSN network and I get the "Connection error from Notification server: Connection refused" message. This issue occurs in both my Ubuntu 12.04 machine ...
4
votes
1answer
6k views

Lenovo IdeaPad z570 wireless adapter isn't working properly in Ubuntu 12.04

So, the anamnesis: Machine: Lenovo IdeaPad z570 WiFi-adapter: Intel Centrino Wireless-N 1000 OS: Ubuntu 12.04 $ uname -a $ Linux username-Ideapad-Z570 3.2.0-32-generic #51-Ubuntu SMP Wed Sep 26 21:...
4
votes
1answer
2k views

Open port 5000?

Yesterday I tried to use this heroku command: heroku run db:migrate and after a long wait it said that it was in timeout After many tries I've googled about this and I found that, since also other ...
4
votes
2answers
2k views

Cannot connect to eduroam from ubuntu

I am trying to connect to eduroam from ubuntu, asks me for certificated. I asked my college tech support and the answer I got was "I don't know nothing about linux ubuntu, all machine are windows or ...
4
votes
0answers
4k 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 ...
3
votes
2answers
1k views

How to get connection to both wifi as well as LAN in ubuntu 14.04 LTS?

On my Ubuntu 14.04 LTS laptop, I have a LAN connection with a static IP address as well as a WiFi connection to the internet using DHCP. LAN connection goes to a switch and WiFi connection from a WiFi ...
3
votes
2answers
9k views

How to copy files between two computers using SSH [duplicate]

I have 2 computers: PCA and PCB. I am also using a SSH connection that goes from A to B. So here's my problem: I have a folder saved on the desktop of PC A and I need to copy it to the desktop of PCB ...
3
votes
2answers
1k views

How to check if I can connect to a server port?

I have a Riseup account, but I just can't get the SMTP to work. I have tried all the tutorials, nothing. Neither Thunderbird nor Sylpheed work. Then I thought that my ISP might be blocking the ports ...
3
votes
2answers
6k views

Deluge daemon connection?

My deluge-console is suddenly giving me this error Failed to connect to 127.0.0.1:58846 with reason: Connection refused why is this error.I have done nothing and the GUI deluge runs fine.Its the ...
3
votes
2answers
209 views

system log question- auth.log

I'm pretty new here. I was looking at my system logs and noticed this: Jul 21 00:57:47 htpc sshd[13001]: pam_unix(sshd:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=188....
3
votes
1answer
317 views

How to connect to a laptop running Ubuntu on the same home wireless network?

I am running Ubuntu 14.04.1 LTS 64-bit on both of my laptops and they are both connected to the same home Wi-Fi at the moment. I want to connect to the other computer via one of the computers, say ...
3
votes
1answer
2k views

How to connect mobile broadband using terminal? [duplicate]

I configured new-mobile-broadband connection. I know that I can connect by clicking as following: But I want to connect manually to that mobile broadband by using terminal. How to do with terminal ...
3
votes
2answers
14k views

Juniper network connect on Ubuntu 14.04 cannot find 32 bit Java

I have Ubuntu x64 and trying to install Juniper network connect. Installed 64bit jre/jdk, icedtea and 32bit jre sudo apt-get install openjdk-7-jre icedtea-7-plugin sudo apt-get install openjdk-...
3
votes
2answers
171 views

Slow Adhoc connection

I am controlling my robot from my laptop. The robot itself has its own laptop and is broadcasting an adhoc access point. I noticed that the speed between both laptops is really limited and peaks at ...