Managing and using network connectivity on a Ubuntu system

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GNS3 can't running on Ubuntu

Help on ubuntu 14.04 Failed to run gns3 as user root. The underlying authorization mechanism (sudo) does not allow you to run this program. Contact the system administrator.
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1answer
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Automatically connecting to OpenVPN only when using Wifi, not on Ethernet

I have an OpenVPN server set up on my home network using TAP (rather than TUN) devices, such that clients that connect to the network remotely are bridged to the same subnet as my (wired) home ...
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1answer
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Dell inspiron 14R has no network after kubuntu installation

I've just installd the LTS version of Kubuntu, and i can't connect to any network, wired OR wireless.. Most of the answers i've seen here assumed there's only a problem with the wireless, so i'm kinda ...
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About personal hosting and domain names

I downloaded ubuntu server on an old machine in order to learn as much as possible about networking & server management , I want a personal web server to host my files on & access it remotely ...
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apache2 on ubuntu 14 - localhost works but ip doesn't

I've just installed apache2 on my box, along with php5. I can navigate to "localhost" and it works. But I can't access this webserver from another machine... or even locally using the IP address. ...
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Installing NTP and DHCP servers in Ubuntu Server

I have just installed Ubuntu Server in VirtualBox. My homework requires that I install and configure DHCP and NTP server. Alright, so the first thing is installing them! sudo apt-get install ntp ...
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2answers
158 views

Is it possible to store user's home directories remotely?

I work in a small office with 6 PCs and a server. I'm looking at installing Ubuntu on all of the computers, but I'd like users to be able to log in to any one of the computers and be able to access ...
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36 views

How can I create Logical Loopback on Ubuntu?

How can I create a logical local loopback on Ubuntu 10.04 like the procedure here for a Juniper router. (Not talking about 127.0.0.1) Configure a Local Loopback Action To configure a local ...
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Cant connect to internet

I turned on my laptop this morning and cannot access the internet. I am using Ubuntu 14.04. Strangely i opened virtualbox and i can access internet through that. I am dual booting with Kali Linux and ...
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Built a minimal Ubuntu now need to move it to another PC

I've built a bare minimum Ubuntu server 14.04 on my Lenovo H520. I now need to move this HDD to my Acer M290, but when booting it says "Waiting for network configuration..." and finally boots up ...
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1answer
15 views

Problem with MAC address getting changed to the original one upon connection

I am making some tests with my router and it looks like the mac address I change by doing: ifconfig eth0 down ifconfig eth0 hw ether 01:02:03:04:05:06 ifconfig eth0 up Gets changed to the original ...
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1answer
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Is there any way to show vnstat as indicator Unity?

I tray indicator-netspeed but show sum of download and upload, I want to show each one seperate, Then tray system-monitor-indicator and show total network, I want to show just ppp0 bandwith. Is there ...
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Domain name is not appearing in “work network”.Instead it displays “Network 9”

I have configured isc-dhcp-server and provided a domain name "anbu.com" along with the IP addresses and other details. My Windows 7 client got its IP address from the DHCP server. In the Network ...
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1answer
48 views

Wifi problem on Ubuntu 14.04

I have problem with drivers on my laptop. My wifi adapter is Broadcom BCM4313 802.11bgn Wireless Network Adapter I am on Ubuntu 14.04 LTS, and my kernel is : 3.13.0-40-generic I was trying three ...
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1answer
18 views

A chromium thread using port no other than 443 or 80

I tried ss command to know the status of sockets in my system (ubuntu 14.10 ), $ ss tcp ESTAB 0 0 192.168.1.10:51492 74.125.236.200:https tcp ESTAB 0 0 ...
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1answer
32 views

How to create localhost

I am trying to set up a temporary SMTP server to send an email. I am using python for this (smtplib.SMTP('localhost')) and getting a socket error. When I try wget localhost, I get a "failed: ...
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routing through ubuntu server

Im having issues with routing from Windows/Linux/Mac machine through server and from desired interface out. So this is my configuration: My example will be Ubuntu -> Ubuntu -> out First machine: ...
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35 views

Hplip network printer setup cannot find printer (HP Officejet Pro 8620)

I have a HP Officejet Pro 8620 printer and I am trying to setup network scan with it but the hp-setup tool claims it cannot find the printer. However the printer is connected to the network and I can ...
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2answers
23 views

Ethernet connection is not showing in my ubuntu 14.04

These are outputs of some useful commands:- May it helps... 1.-> ifconfig output--> lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 ...
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Ubuntu cannot see eth1

someone can tell me what i doing wrong with Virtualbox and ubuntu?
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Huawei E303F/E303FH/E303FH not able to connect

I installed driver for my Huawei E303F/E303FH/E303FH on my Ubuntu 14.04 LST. Installed successfully but not able to connect internet. I tried to fallowed a document which come with Huawei ...
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48 views

Ubuntu 14.04 - Connection is there but no internet access - messed resolvconf

Let me start with a disclaimer: I have tried to fix my problem by reading similar questions & answers, but so far no luck. Not only that, but I think that by making some changes to resolvconf I ...
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WiFi connection not stable and low

I've been using ubuntu 14.04LTS for about half a year, about 2 month ago I noticed some issues with my WiFi connection like: For no reasons my network manager can switch to another WiFi connection ...
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No network on Dell INSPIRON E1505 Intel Core Duo, win Xp

Hello I have installed Ubuntu on this old laptop and everything works fine but I have no network with cable plugged in and no wifi. I have tried pretty much everything that people suggested in other ...
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How to organize my media files in my home network?

I need a software like Picasa that will work on my home network indexing files, retrieving thumbnails, allowing to tag them all and keeping the files where they are without copying them back to my ...
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network interface stopped working on dell inspiron e1505

I have the same problem with multiple linux distributions. I install ubunto 14.04, the ethernet works fine, try to setup wifi, that doesn't work. reboot system, then nothing works network-wise. ...
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Ubuntu 14.04 AWUS036H (v5) continually re-initializes - never succeeds completely

I have Ubuntu 14.04 running on a Dell Precision M3800. I need to use two wifi cards on this machine (long story) and I have had the internal Intel 7260 working along side a Netgear..something ...
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21 views

WLAN Sensitivity setting is not supported

I need to set and get sensitivity value for WLAN device of my Lenovo machine. I tried to set other settings such as operation mode, txpower and frequency and it works fine. Machine Manufacturer: ...
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3answers
43 views

WIFI Card not working dell Inspiron 17 wifi card

I have a Dell inspiron 17 and I installed Ubuntu yesterday and when I logged in (I was originally on windows 8) there were no WiFi connections at all... I've tried everything and I can't seem to find ...
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HP 470 G1 don't work bluetooth with ubuntu 14.04

When I want to connect with me bluetooth mouns, my laptop doesn't detect it.
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Home Workgroup and use TeamViewer to remote control from phones & ipad - which variant?

Home Workgroup and use TeamViewer to remote control windows 7 laptops from phones & ipad. I also hope to add an older standalone PC to network - which variant (So many, I'm confused) This is why I ...
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1answer
43 views

Unable to connect to mixed b/g/n wifi network on Ubuntu

I cannot connect to mixed b/g/n wifi Network. I am using wl drivers. Connection to other wifi networks is working well, but to this network I cannot connect from Ubuntu (from my android phone ...
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30 views

I can't reach some website

I have 2 PCs and 2 laptops in my office. and they're connected by wire to a router, which is also the DHCP server. The 4 machines are all Ubuntu 14.10. When I only use my laptop, everything is fine: ...
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How to Fix the Intermittent Ping Time out

I am back with a new Question. Its weird as always. My setup is as follow; 2 Ubuntu 12.4 LTS Servers. / LynkSys POE Switch. / 01 LynkSys Router / 3 Proxim APs. The APS are connected via Cat6 to ...
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31 views

Why is my wireless very unstable, even after trying Wicd?

Here is my script output. I'm a brand new Linux user. I installed it on an old Windows 8.1 machine. Wireless Internet will be connected for a minute or two, then I will not be able to load Web pages. ...
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1answer
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Wi-fi doesn't work without reinstalling after every restart - please help me - 14.04

Wi-fi doesn't work without reinstalling after every restart - please help me I'm using Ubuntu 14.04 and bcmwl driver on Dell Inspiron 15 3521 02:00.0 Network controller [0280]: Broadcom Corporation ...
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UMS.sh (run as service) on Ubuntu 14.04 won't read configuration file

I'm trying to get my ubuntu 14.04 to run universal media server so I can stream movies to my ps3 (lowest firmware 4.55 unfortunately - unjailbreakable). After much research on the net I was able to ...
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Troubleshooting network connectivity

This PC is connected via RJ-45 to home based router that in-turn conected via RJ-11 to public phone service shared with ISP. With wrong trace-route and Inaccurate connection data listed in ...
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14.10 Cannot connect to internet through a wired connection. Try before install boot option selected

I'm currently attempting to install 14.1 on a new computer via USB. No Wireless. It's plugged into the ethernet port on a Gigabyte GA-990FXA-UD3 ATX mother board with an AMD FX-6350 3.9 GHz 6 core ...
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ubuntu 14.04 can not access some sites

I recently installed ubuntu 14.04 64 bit edition. I use PPPOE internet connection. But after configuring my connection I found that I can not access some sites like(twitter, odesk, ...
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Most Complete Linux Distro [closed]

My apologies for resorting to this forum for answers! I have been trying to find a distro of Linux that will not take me a lot of time to install and perform some basic Mac/Windows functions such as: ...
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How (or is it possible) to run code inside of /etc/network/interfaces?

The task: generate random mac when an interfaces comes up. #this does work to generate a random mac echo '00 60 2f'$(od -An -N3 -t xC /dev/urandom) | sed -e 's/ /:/g' the inside of ...
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Ubuntu WiFi connection is very unstable

I have Windows 8 and Ubuntu 14.04 dual booted on my laptop. Until last week, the WiFi on both Operating Systems were working perfectly. However, for the past few days my Ubuntu WiFi has been ...
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1answer
24 views

How to allow a WAN connection via a forward port?

My home internet connection has a static IP address (eg: 123.123.123.123) I have configured my router to forward port 9000 to an internal host (192.168.1.101), which is running Ubuntu 14-04. I run ...
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Mythbuntu Public Samba Shares

I have installed Mythbuntu 14.04 and have MythTV running. I am trying to access the Videos and other Samba shares from my Windows 8.1 workstation and get an "Access Denied" when I try. When I type ...
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28 views

Correct way to create VLAN and bridges on Ubuntu 14.04?

All, When I tried to create VLANs and Bridges on Ubuntu 14.04 as following, network connection is always lost on it, what's the problem? Note that the if I only set em1(no em1.100, cloudbr0 and ...
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no-ip is not updating on Ubuntu 14.04.1 LTS

I'm trying to set up no-ip on Ubuntu 14.04.1 LTS, but when I access no-ip website it can't show that no-ip is updating ip address. Is it necessary to open some port? I installed no-ip from this ...
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Alternative Network Manager for Ubuntu 14.04.1 supporting WPA2 Enterprise Encryption

I just installed Ubuntu 14.04.1 LTS 64-bit and I have problems with logging into the wireless network inside the university campus. The settings of the network are as follows and it does not use a ...
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1answer
62 views

14.10 Cannot connect to internet through a wired connection. Still trying before install

I'm currently attempting to install 14.1 on a new computer via USB. No Wireless. It's plugged into the ethernet port on a Gigabyte GA-990FXA-UD3 ATX mother board with an AMD FX-6350 3.9 GHz 6 core ...
0
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1answer
32 views

/etc/network/if-up.d script with password prompt

I want a script that logs me in when a specific interface uplink was established (university LAN). The thing is I don't want to hardcode my password into the script. Is there any way to prompt for a ...