Managing and using network connectivity on a Ubuntu system

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juju deploy fails with “lookup store.juju.ubuntu.com: no such host”

I have a MAAS setup (using KVM) with 1 MAAS controller and 1 server node. I could "juju bootstrap" successfully and following is the output of "juju status" vishal@maas:~$ juju status environment: ...
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1answer
377 views

No wlan after standby

since I use Ubuntu 13.10, I'm experiencing a bug: I activate standby I press any key to continue working on my laptop The computer is on again, but the wlan doesn't work. → The wlan network ...
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1answer
391 views

Wicd does not like to reconnect upon resuming in the same or different location

Ubuntu 13.10 - Samsung Series 9 - Wireless connection only Issue: Wicd does not automatically re-connect after the laptop is suspended. This happens when the laptop is turned back on in the same ...
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2answers
99 views

Wireless won't connect after resume - adapter is not asleep

Running 14.04 on a Samsung N150. I am having the same problem as described in this post To reiterate, this is NOT the 'adapter sleeping' problem; it sees the network(s) and starts trying to connect ...
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0answers
10 views

nm-applet disappeared from top panel Ubuntu 14.04

Can someone please tell me what this error is? (nm-applet:2819): nm-applet-WARNING **: Could not find ShellVersion property on org.gnome.Shell after 5 tries ^Cnm-applet-Message: PID 0 (we are 2819) ...
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ubuntu 12.04 booting freezing on “Booting system without full network configuration…”

I have Asus laptop with Ubuntu 12.04 on it, the problem start after I change the permission of /etc which result that I can't execute the sudo commands when I tried to change the permission I got this ...
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2answers
3k views

how to delete blacklisted items from /etc/modprobe.d/blacklist.conf?

My wireless doesn't work with Ubuntu 12.04.(it worked with 10.04 LTS) I have a Dell Inspiron 1501. I followed the steps posted below: Run these: sudo apt-get install --reinstall bcmwl-kernel-source ...
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17 views

Xorg high cpu usage when wireless connection is active

I use Xubuntu 14.04 LTS 64-bit (3.13.0-43-generic) on a low-end notebook (AMD C-70, 2GB RAM, RTL8188EE) and a router D-Link DSL-2640B. The wireless connection looks fine, but it is impossible to use ...
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1answer
12 views

Waiting 60 more seconds for network configuration [duplicate]

My laptop (Ubuntu 14.04) is taking too long showing a message "Waiting 60 more seconds for network configuration"
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2answers
38 views

Where are my iptables?

I ran the code: iptables-save -t nat -A PREROUTING -d 79.3.191.226 -j DNAT --to-destination 192.168.0.14 But I don't know if it worked since I cannot find the iptables file inside my directory. ...
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1answer
30 views

What does this mean? [duplicate]

E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Limit. Current value: 25165824. (man 5 apt.conf) E: Error occurred while processing octave-io (NewVersion1) E: Problem with ...
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Network fails and won't reinitialize Ubuntu 14.04

I have a freshly installed Ubuntu-Server 14.04 instance. Nothing is installed yet other than the base system, OpenSSH server, and LAMP server (as selected in the install process). It is connecting ...
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1answer
19 views

Forwarding ports with iptables not working?

I have an ubuntu server (14.04.1) which is asking as a router for my network. It has an internet facing interface, eth0, and a second interface, eth1, for connecting to my 10.0.0.0 network. I am ...
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1answer
31 views

Ubuntu 14.04 LTS wireless not working

So I have Ubuntu 14.04 LTS installed on my Dell studio 1555 and my wifi was working before but after a recent update and upgrade, it stopped working. Here are the contents of my wireless-info.txt file ...
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1answer
18 views

wireless interface gone after installing systemd 218

I Installed systemd-218 from the sources. After that I rebooted the system. Now I am unable to see any wireless interface. I tried reloading the ath9k driver. But no luck. The lsusb commands output is ...
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1answer
57 views

ASUS X550C wifi

There is a lot of similar problems, but this one is a bit different. I have no phy0: Wireless LAN Ubuntu: 14.04.1 sudo rfkill list all 0: asus-wlan: Wireless LAN Soft blocked: no Hard ...
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51 views

Ubuntu doesn't connect to ethernet, it works only on second connection

I have ubuntu 14.04 running on a lenovo w540 About a month ago suddenly I had no ethernet connection, At the begining it worked only if I type sudo dhclient -v eth0 I played a little bit, and re ...
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36 views

Cannot access some smb share

I was working in windows domain from local Ubuntu account and accessed all windows shares by typing every time my windows login\pass Then I joined my machine to our domain and started to use my domain ...
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1answer
23 views

cannot connect to websites by their domain name but ip addresses

I looked at the related questions but I still don't have an answer. My initial problem was transmission not connecting to any peer, I applied some suggestions, after half an hour I realized that I ...
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0answers
25 views

How do I configure internet connection for Terminal on Ubuntu 14.04?

I've installed on Ubuntu 14.04 and with I've Broadband connection setup, Browser connection is OK, but Terminal not connection via internet, when command type "sudo apt-get update" by terminal then ...
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1answer
18 views

Internet connection slowing down till stop

I've just installed Ubuntu 14.04 as second OS on my PC and I'm having a strange issue. When I try to connect to internet I notice a progressive slowing in the network speed till it completely stuck. ...
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2answers
352 views

Laptop can't reconnect to new wifi hub after suspend

I have a Dell Inspiron 5520 laptop with an Intel Centrino Wireless-N 2230 card, running Ubuntu 14.04. The wifi worked flawlessly with my old Virgin Media Superhub, but after being "upgraded" to a ...
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How to display network traffic in terminal

how to display the actual network traffic (wireless) in a terminal? Additionally: Is it possible to add this info to the chart of top?
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MAAS Network question - Node cannot ping to outside world (ip shows up correctly)

Hello AskUbuntu community, For the past few days, I finally jumped on the MAAS train but encountered a few problems with network configurations. I do apologize if I have missed some fundamental ...
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2answers
34 views

Does ubuntu wifi sharing process support samsung Galaxy Tab 2 10.1?

:) Lately, I have been trying to share my internet to my android tab(Samsung Galaxy tab 2, 10.1) via Wifi hotspot. What I did: I have used KDE network manager to create a wifi(shared) profile with ...
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1answer
48 views

Ubuntu 13.10\14.04\14.10 wireless problem

I'm having problems with wireless in Ubuntu 13.10\14.04\14.10, sometimes when i start-up my laptop i can't find my WiFi and after i restart it works just fine but after sometime it drops the ...
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1answer
5k views

TFTP Error code 1: File not found

When I'm sending a file through TFTP remotely, it shows an error like tftp> put MYMIBTable.txt /home/amsys/Desktop/ Error code 1: File not found What is the problem? What is the ...
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13 views

Establish reverse ssh tunnel at OS startup / network connection up [migrated]

I'm trying to setup a reverse SSH tunnel using a middle-man, due to firewall restrictions. I took the following steps: from ssh server do reverse tunnel: ssh -R 8080:localhost:22 ...
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1answer
17 views

Can my network use Ubuntu Openstack?

I have a small network of computers, I am migrating from Arch Linux to Ubuntu's OpenStack Platform for usability reasons. The reason I am asking is because of the following: Installing Ubuntu ...
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2answers
31 views

Why is Linux better? [on hold]

What are your opinions as to why Linux is the boss. Also which distro do you prefer for personal use?
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0answers
36 views

how to rebuild a wifi driver

I have a hp laptop and the wireless chip-set is a rt5390. i know that a lot of people are having issues with the wireless connection but from what i have been reading when people have rebuilt the ...
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2answers
16 views

Cannot get my N300 (DWA-130) D-link wireless USB to work on Ubuntu 14.04

I'll start by saying i'm pretty new to linux, go easy on me ! I've downloaded Ndiswrapper and tried installing the windows XP/Vista driver... But iwconfig shows that there is no extensions.. I've ...
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1answer
45 views

Created a wireless network from my Ubuntu, it can't be seen by nearby devices

I created a wireless network from my Ubuntu, I wanted to connect to that network from my tablet (I don't want to share internet or anything, I just want both devices on the same network). But the ...
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1answer
4k views

Is there a GUI app to setup and toggle hostapd?

Title says it all, I've tried wifi-hostapd-app but I always run into trouble while installing one of its dependencies, dnsmasq specifically. I read one of the workarounds is to disable Ubuntu's ...
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1answer
18 views

Cisco VPN not working although it says connected

I am using Ubuntu 14.04 and I am trying to connect to my university network via VPN. I installed Cisco VPN and seems to be working normally. I connect to the network and it says connected, but when I ...
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1answer
28 views

Can't connect to WiFi after suspend

After resuming from suspend, the Network Manager detects my WiFi signal, but eventually gives up when trying to connect to it. These fixes did not work: $ sudo restart network-manager $ sudo nmcli ...
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1answer
6k views

Ubuntu 12.04 // Likewise Open // Unable to ever authenticate AD users

So Ubuntu 12.04, Likewise latest from the beyondtrust website. Joins domain fine. Gets proper information from lw-get-status. Can use lw-find-user-by-name to retrieve/locate users. Can use ...
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0answers
7 views

mount.nfs connection timed while connecting with utlp kit (as a client)

![enter image description here][1]scenario of my problem is as follows: I have created /naveen/shared direcrory inside the UTLP. I have created /home/mtlc/Desktop/rootfs inside the UBUNTU PC. ...
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Wifi issuse, first time user

I finally built a PC of my own and I created a duel booting system. (Windows 8 and Ubuntu) Win 8 works flawlessly but Ububntu is the most infuriating thing I've ever dealt with. I can't access the ...
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2answers
212 views

/var/log suspicious entries

For fun I tailed /var/log/auth.log (tail auth.log) and there were many of the following: sshd[16225]: Received disconnect from 203.100.83.32: 11: Bye Bye [preauth] The ip appears to be from ...
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2answers
13k views

Wireless not working when using UBUNTU 13.04 on DELL Precision M6300

I installed UBUNTU 13.04 dual boot with Windows 8. all working perfectly well except my wireless. the wireless does not turn on or off. neither it detects any wireless system. Fn+F2 does not turn on ...
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1answer
116 views

14.04 LTS Ubuntu wifi stops working and disconnects after few minutes from rebooting

I installed ( ubuntu 14.4 ) 2 days ago (it's important to mention I'm still a beginner). On the first day my home WiFi worked fine, but on the second day and until now my WiFi stopped working and if ...
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1answer
30 views

Wifi problem with RTL8723ae on Ubuntu 14.04

I have the same notebook and problem as the person here: Wifi problem with Ubuntu 14.04 and RTL8723ae I have tried everything including the suggestions provided there (I installed the non-free ...
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Accidentally deleted everything associated with wifi connection (I think)

I Just returned from a long trip to remember that right before I left I really messed up my wifi connection. I deleted the applet, nothing pops up when I try to "add to panel" or look for wifi in ...
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13 views

Configure Wi-Fi Network Preferences in Ubuntu based on Signal Strength?

I use about 6 different wifi networks, depending on my location. At one location, we have two networks that are the same, but through a network range booster. Unfortunately, this poses the problem ...
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2answers
8k views

Proxy authentication with terminal Ubuntu 14.04

I would like to access the internet to update files etc. from the terminal on a secured proxy network. I've already tried the following: Adding to /etc/apt/apt.conf, /etc/apt/apt.conf.d/01proxy, ...
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How do I can configure Firefox and Terminal via internet Ubuntu 14.04?

I've installed Ubuntu 14.04 and with I've broadband connection setup but it's only some application via internet , But I can't access Firefox and Terminal via internet see screenshot , when Firefox ...
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1answer
1k views

No such command 'sip show peers' when using asterisk

i want to connect two soft phone using asterisk after configuration the sip.conf and iax.conf and extension.conf can't enter any order from cli example of the error: Connected to Asterisk 11.6-cert1 ...
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1answer
138 views

What are the possible threats if internal IP address is publicly revealed?

In many cases, people do not take enough care to remove their IP addresses from some output before posting it to help forums and Q&A sites like askubuntu. Considering one's IP address is revealed ...
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1answer
13 views

How to perform detail packet capture on Ubuntu firewall?

I've routed internet traffic of my other systems on this ubuntu linux system where I have configured packet forwarding. but still I am unable to get internet on other systems. Hence I want to ...