Managing and using network connectivity on a Ubuntu system

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21 views

firefox -37.0.2 not taking proxy username and password

I am behind the proxy server, when i open Firefox-37.0.2 a window came and say "authentication required" after entering the proxy username and password, keep asking continuously "authentication ...
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0answers
20 views

cannot boot - Ubuntu 14.04 server - waiting for network configuration error

i am having problem booting into a ubuntu server. the simple error is "waiting for network configuration" The problem started when the server got turned off due to power failure. i have tried ...
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0answers
13 views

How to connect Huawai EC159 module to Ubuntu 13.11 to access 3G net? [on hold]

I have Huawai EC159 module it is shown in terminal after command "lsusb" but I dont know how to access it so that I can use 3G net on my laptop. Please help me. Thank you.
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6 views

create wpa2 wifi network in 12.04 lts

I was connecting linux and windows in client server model. I have apache configured on my linux.It is working fine with "WEP" SECURITY but how to create wpa2 wifi network in 12.04LTS because I can't ...
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0answers
8 views

TP-Link WDN-4800 WLAN can ping and browse one webpage before not doing anything

I recently put together my first build, and I have a TP-Link WN-4800 WLAN for Wifi. I put it on my motherboard, and it was detected fine right away. It shows up in my network manager and can connect ...
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1answer
27 views

How to change 127.0.0.1 to any IP in ubuntu? [on hold]

I want to change 127.0.0.1 to any IP address in Ubuntu. What are the steps to do this?
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37 views

Trying to ssh into virtualbox static ip ubuntu from debian host

So, I messed with my /etc/network/interface and assigned the different addresses basically blindfolded. I can't even ping google, and really don't know what my addresses should be. This file ...
2
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0answers
34 views

RTL8812AE cannot connect to 5ghz networks

I recently purchased a PEX867WAC22 PCI-E wifi card from StarTech (RTL8812AE), and have not been able to connect to any 5 ghz network due to authentication timing out. The driver it comes with is only ...
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11 views

Does WICD provide options for choosing one of internal and external wireless adapters?

I plug in my usb external wifi adapter, but I can't find where in WICD I can choose to use either the internal or external wifi adapter. Where are the options? Thanks.
2
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20 views

Share internet connection to distribute ubuntu nodes sitting behind master

I'm working on setting up a 20 node distributed system. The data nodes are hp Compaq 6500 pc's running Ubuntu 12.4.5. The master is connected to the internet and I've configured the IP's of the nodes ...
1
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1answer
9 views

MAAS IP Change and IPMI problem

Here is the case: 1) I had my MAAS Server and nodes in lab network 2) I mooed the server to operation ,so I changed the IP address of MAAS 3) I executed these: sudo dpkg-reconfigure ...
1
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1answer
31 views

Ubuntu Network Error (Ubuntu 12.04) [on hold]

We run a 1000BaseT, full duplex network, however we use auto-negotiate to ensure that minimal errors occur. A few days ago, all Ubuntu servers started having an extremely slow upload (to the outside ...
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20 views

Ubuntu 14.04 LTS, Netgear WNDA3100v2 wifi unstable and stops working randomly

I have spend a large amount of my time trying to get my WNDA3100v2 Netgear Wifi dongle to work. After hours of searching I was able to find out how to install the needed,bcmn43xx64.inf driver for it ...
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1answer
16 views

DHCP Stopped working over Bonding

Something recent broke DHCP and Bonding. I used to be able to do this: # This file describes the network interfaces available on your system # and how to activate them. For more information, see ...
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0answers
28 views

Wiereless Not Working in Macbook Pro Retina (2014)

I am a new Linux user. I have had a problem with the detection of my wireless network adapter in Kali Linux for a while. I have posted in their forums but with no success, but as I have seen that ...
1
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1answer
20 views

How to make virtual interface ping to a host in the network

I created a virtual interface as indicated in this Unix.SE post. I.e. sudo modprobe dummy sudo ip link set name eth10 dev dummy0 sudo ifconfig eth10 up sudo ifconfig eth10 192.168.1.150 I want to ...
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12 views

Hadoop 2.6 running on Ubuntu 14.10 desktop Pseudo Distributed mode

I have installed Hadoop2.6 and start daemons: start-dfs.sh and then I try to access HDFS and get connection refused error. Find below anand_vihar@Latitude-E5540:~$ ssh localhost Welcome to Ubuntu ...
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0answers
25 views

How do I repair a “No Route to Host” error?

I test a simple client/server program (C, BSD sockets) but get a No Route to Host message from the call to connect(). Works elsewhere - gory details: Hardware: Older desktop (brutus) running Fedora ...
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14 views

Proxy Network setting for NTP servers in Ubuntu

As debug check list on my host machine is configured to accept UDP packets on the NTP port 123. As I am working PROXY server and trinying to get connected through NTP, but everytime it was sysnced ...
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0answers
13 views

how to set set up TFTPD and DHCP for PXE like booot

I am trying to setup tftpd and dhcp to assign IP address to router and then to pass the server and path to kernel image, which will be booted. All the guides I have located tell me to install and ...
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0answers
13 views

How to disable an auto-detected default network scanner and use the USB scanner

I have a MFC scanner which was auto-detected through the network. When I try to use it, get invalid-argument therefore, I connected it via USB. Through USB it works however, the scanner programs ...
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1answer
55 views

Lost WiFi when loaded into my HP Laptop

I have loaded Ubuntu/Linux 14.04LTS onto my HP Laptop. I did a dual boot with Windows 8.1. Using Windows I have a WiFi connection. When I shut down and reboot into the Ubuntu/Linux I then loose my ...
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15 views

Will this work? [closed]

I have a relative who doesn't have a Ethernet jack to her laptop and was wondering if a USB 2.0 Male to 10/100Mbps RJ45 LAN Ethernet Network Plug Adapter Cable will work. She has a old netbook ...
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14 views

Launch instance getting network error Ubuntu Openstack landscape cloud

I need some help in troubleshooting the network portion of my openstack setup. I have installed the landscape installer successfully. Every time I try to spin up a new instance I get this error. ...
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18 views

No NETWORK for any Linux (guests) on Mac (host) with VirtualBox

In my company I have a mac hosting an official VirtualBox 4.3.22. There is an official guest Win7 with NAT-network configured and working. I tried any linux distro (Ubuntu 14.10, Kubuntu, Mint, ...
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19 views

Setting Up Active Directory With Samba4 & Kerberos

I am new to active directory and configuring domain controllers! I have followed this guide ( ...
0
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1answer
46 views

How to get Wireshark to monitor a specific IP in the background

I have got Wireshark installed and I am wanting to monitor the traffic to and from a specific IP address, so what would be really useful would be if I could get Wireshark to start by itself on startup ...
0
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1answer
21 views

Problem to acces shared folder in Ubuntu 14.04 from Yosemite using IP address

Each time that I have tried in Yosemite " Concect to Server/ server address (smb:// IP adrress i want to connect) " I got an error "there was a problem connecting to the server using the IP address". ...
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0answers
16 views

How to change the Delayed Acknowledgement timer? (14.04)

I am trying to set different values for the timer of the Delayed Acknowledgement and see the different behaviors at packet level. I expected this to be a kernel level option but I can't locate ...
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0answers
22 views

Network married to router

I have Ubuntu 12.04 server, I upgraded to the desktop. My internet connection is married to the router. The Internet connection works fine on that router. As soon as I move the computer to a ...
1
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1answer
35 views

Wireless not working on Dell Latitude E6400 with Unbuntu 14.04.2

I installed a fresh copy of Ubuntu 14.04.2 to a new hard drive in a Dell Latitude E6400. Unfortunately I cannot figure out how to get the wireless working. I know the hardware works because my other ...
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23 views

Wifi Intel Centrino N-2230 not working on Toshiba Portege Z930-118 on Ubuntu 14.04 LTS

After an update from 12.04 in which everything ran smoothly, I'm experiencing issues with my WiFi connection: it can not connect, requires rebooting to start, it keeps dropping connection, and starts ...
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2answers
19 views

Firewall Ports for Filesharing With OSX

I tried searching for this but I'm coming up short. Maybe my wording is wrong. I have my Ubuntu machine showing on my LAN - and I can see it from the Finder Window in OSX - but it won't connect when ...
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50 views

Wireless automatic disconnected

04-22-2015 My internal wireless adapter become disabled (the wireless led indicator isn't lighted), when I mount my laptop on a laptop table from my desk. Restart Ubuntu is the only solution I know ...
0
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1answer
45 views

Ubuntu 14.04.1 Bug - issue with my on-board networking adapter and the ACPI of my computer

This old bug affects me severely, I say old bug because it is very well documented in the following link: Bug report This bug results in two things: My on-board networking doesn't work, and trying ...
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2answers
39 views

Wi-Fi cannot be used, it says it is disabled by a hardware switch (I do not have a disable WiFi hardware switch on my laptop)

I just installed Ubuntu onto my Lenovo Yoga 2 and I cannot turn on or use my WiFi because it says that it is disabled by a hardware switch (I do not have a physial disable WiFi hardware switch on my ...
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29 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
11 views

Link-local (zeroconf) networking with multiple hosts/interfaces

I have a machine (hostname foo) with two wired network interfaces, eth0 and eth1. When I connect another host bar to one of them (eth0), I can see in either one's NetworkManager that it's using ...
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44 views

Ubuntu 14.04 RT 8723 WIFI adapter not working, SIOCSIFFLAGS: Operation not permitted

I have a Radxa Rock Pro on which I recently flashed the Ubuntu 14.04 image. This image should have the firmware for the RT 8723 already loaded. Because the output of ifconfig -a is: eth0 Link ...
0
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1answer
22 views

Im copying data from ubuntu to windows. but the folder name is changing automatically [closed]

Im copying data from ubuntu to windows. but the folder name is changing automatically. I tried same copy to external drive also. After connecting to windows system the name of folder or file is ...
0
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1answer
12 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.
0
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1answer
44 views

Can private IP address be the same as public IP address?

I checked my public ip address at http://whatismyipaddress.com, it showed me 137.189.34.166. When I typed ifconfig in terminal it showed me my private ip address is 137.189.34.166, too. Does that mean ...
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0answers
38 views

Wireless interface become disabled

My internal intel wireless adapter (Intel PRO/Wireless 5100 AGN [Shiloh], and logical name: wlan0) sometimes stops working, and I have to restart Ubuntu so that it will work again. My laptop is ...
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2answers
101 views

Ethernet connection not working after installing Ubuntu 14.04 LTS

EDIT: PROBLEM IS BACK.. I cant figure out a permanent and reliable way around the bug (have managed the bug to go away 2 times) my files keep duplicating themselves with a ~ after their name, so if I ...
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0answers
19 views

Menu bar networking menu disabled

Roughly every 2 weeks (give or take a few days), my WiFi becomes disconnected and the networking menu becomes disabled. I’ve been experiencing this for a few months now hoping I could track down ...
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0answers
40 views

Ethernet not working and wireless is slow

I have a desktop PC that I built that I recently installed Ubuntu 14.04 next to Windows 8.1. It has an Ethernet port on the motherboard (MSI Z97S) and a wireless card in a PCI-Express slot (Asus ...
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19 views

iwconfig all interfaces “no wireless extension”

I installed the new ath10k driver following this procedure : ath10k installation. And afterwards I am not longer able to use iwconfig command. I always get this error : Error for wireless request ...
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0answers
17 views

Gufw log: rejected, denied and allowed connections

I have got Gufw installed, and I have set some firewall rules so that it rejects and allows certain IP addresses. And although I have set it so that it logs-all, I cannot seem to find anywhere where ...
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0answers
21 views

All Networking disabled after RAM upgrade [virtual]

After running a rather large script file from the terminal I got a Java memory heap error. So I decided to try increasing the RAM to resolve the problem... However, after upgrading the RAM from 2048 ...
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1answer
41 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. ...