Managing and using network connectivity on a Ubuntu system

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Bypassing Network Manager

Assuming there is more than one ethernet NIC as well as a wireless device on a given system, how can I specify custom settings in /etc/network/interface for one of the NICs but allow Network Manager ...
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1answer
98 views

Setting Up Loopback to Function When Ethernet Disconnected

I'm currently running a fresh install of 14.04. "ifconfig -a" lists the loopback address, however I cannot access the loopback interface (i.e., pass packets across it) unless a networking cable is ...
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1answer
26 views

Communicate from Ubuntu 12.04 to Ubuntu 12.04?

I have two laptops running Ubuntu 12.04 on which I want to build a (virtual) network using VMware Workstation. The first step is to communicate between the hosts by using an crossover cable. I have ...
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2answers
2k views

Networking stopped working after reboot

I powered down my headless, no gui file server to replace a seized fan and now the eth0 interface isn't picking up an IP address via DHCP; during boot it just sits there "Waiting for network ...
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1answer
421 views

How to (re)configure my internet connection? (DNS resolving failed)

A couple of days ago I was working with ipython notebook and it opens me a page in my web browser (Google Chrome) and I was able to work with the notebook (zero problems with my internet). Then, I ...
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1answer
51 views

Which application can mount or open the network shared directory?

I am new to Ubuntu and I don't know how to open the Network and which application can open the network locations ? Actually I tried with the following steps on first time I was connected but after ...
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3answers
7k views

Problem accessing Windows Share from Ubuntu using Samba

I'm trying to connect to my Windows Share from Ubuntu, and I can't access it although I can access my Users folder. The share works fine when I'm connecting from a Windows computer, so the problem ...
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2answers
246 views

Lan party network usage statistics

Me and couple of my friends have decided to make a lan party around 40 to 50 players. I have couple of conserns I need to find solutions for. DHCP server I have now installed a DHCP server (in ...
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0answers
150 views

twitter.com (ssl) not loading

If I'm trying to go on https://twitter.com it just timeout on Firefox. If I use curl : vayan@vayan-desktop:~$ curl -v https://twitter.com * Rebuilt URL to: https://twitter.com/ * Hostname was NOT ...
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2answers
825 views

Shared folder in ubuntu to windows 7

I successfully shared a folder from windows 7 to Ubuntu(in virtual box) but now I want to know how to share Ubuntu(in virtual box) to windows 7 using a command like this: net use x: \\vboxsvr\share ...
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1answer
258 views

Wifi not working after suspend

I have notebook Lenovo Z500, his wireless hw: Centrino Wireless-N 2230 (vendor - Intel). When I close the lid notebook suspends and when it is woken up wifi is disabled and there is no way to enable ...
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1answer
141 views

Problem installing Micromax MMX 355G

I'm using Ubuntu 13.10. After much this and that, I was able to install the software on my Windows XP. It then ran automatically. But when I open my Ubuntu, I cannot find a way to install it. The ...
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17 views

Installing drivers for my wireless adapter [duplicate]

I have installed Ubuntu 14.04 and cannot get my wireless adapter to work, also it does not show or appear in the All Settings-> Software & Updates -> Additional Drivers. I have also tried using ...
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0answers
100 views

Are there differences between ubuntu server 12.04 and 14.04 in network configuration during the installation?

I decided to turn my old laptop into a server just to learn about servers and linux. I installed the ubuntu server 12.04, I chose my wireless connection during the installation and I installed the ...
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0answers
286 views

PPTP connection failures with client VPN

I'm running trusty on AWS and am trying to connect to a client's VPN. They use Softlayer, whose docs recommend connecting with PPTP. I've been able to connect successfully, but the connection is very ...
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1answer
704 views

Ethernet network disconnected - wireless working

I experience a problem after a I moved in to my new home. I connect to internet through a router. Wireless is working just fine, but wired network is disconnected (ofcourse I plugged in the cable) :). ...
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0answers
211 views

Sharing mobile broadband connection through datacable on android device

Okay so I baught a new android device with kitkat and I'm using Ubuntu 14.04 LTS with an LTE device connected as a mobile broadband. I do have a 3g connection on my cell though but when I was browsing ...
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1answer
242 views

Spy wake up on lan packages

I have a windows computer which trunes on by magic I had long time no clue why this happens until I found the command powercfg -lastwake which told me that my NIC woke up the computer. The wired part ...
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1answer
84 views

Messed with DNS, now does not connect to Internet

So I was trying to fix this reverse DNS issue: $ dig HOSTNAME.DOMAIN.com 1.2.3.4 #example $ dig -x 1.2.3.4 OTHERHOSTNAME.OTHERDOMAIN.com I was blindly following online ...
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1answer
891 views

How to enable echo service in Ubuntu?

I want to test my UDP client send/receive cycle with echo service, but there is no /etc/inetd.conf mentioned in Wikipedia page in Ubuntu.
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1answer
456 views

How to get Internet connection working (restarting networking and network-manager does nothing)?

My Internet connection is not working since I restarted my laptop (which is very old). Here's what I've tried: Ran sudo -s then tried /etc/init.d/networking stop: * Deconfiguring network interfaces....
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3answers
3k views

I cannot create a new VPN connection 14.04

I have installed ubuntu 14.04 and it seems like I cannot actually create a VPN connectionor manage the network devices. When I am accessing the network connection using the network icon at the gnome ...
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0answers
1k views

No gateway ping in ubuntu and fedora, but ok on windows

I am facing a confusing problem. while using my home Wifi on ubuntu 14.04 amd64, my internet connection suddenly gives no response but in notification area it is shown as connected. I switched my ...
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1answer
80 views

Cannot write network share

I'm trying to set up my personal computer to access my work file shares. I mounted successfully and I can read files just fine, but I have no write access. Here is the line I added to my fstab: //...
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1k views

SSH into Ubuntu server (14.04.1) Using mac terminal (os version 10.9.4)?

I am having difficulty connecting remotely to the ubuntu server from the mac terminal. So far I have run: sudo apt-get install openssh-server when I try to connect via the ip address I get an error:...
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949 views

WIFI working but Wired Connection not working: Ubuntu 14.04

I have successful connection through WIFI in both Ubuntu and Windows. (I have dual boot:Ubuntu 14.04 installed & upgraded to 14.04.1 and Windows 8.1) But I have problem in wired connection in ...
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2answers
869 views

Cannot connect to wireless router with TL-WDN4800 card on ubuntu 12.04

My wifi card detects my router, but can't connect to it. On windows 8.1, it connects with no trouble. I have made sure that I selected the right security mode, and I have entered the router's mac ...
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2answers
770 views

how to setup split-dns for vpn with network-manager

I want to create a split-DNS config on a 14.04 desktop machine with both a local eth network and a VPN connection. Ie I should send DNS lookups for address ranges that are accessed via the vpn to the ...
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0answers
143 views

Any way to connect to my PPTPD (VPN) while port 1723 is blocked?

I've set up a VPN/PPTPD Network on my VPS with the intention to bypass the blocked ports at my work and in the train so I can watch youtube and stuff. Now the problem is that when I try to connect to ...
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1answer
107 views

Problem connecting to ssh server that is behind another ssh server in nautilus

So I have this school server that I am trying to connect to via nautilus. In terminal it's all easy but I want to be able to open it also in nautilus. In terminal my way of doing it looks like this: ...
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1answer
4k views

Attach a failover ip OVH

today i bought 4 ips from OVH for my dedicated server and i want to attach them . The documentation says to add a new auto eth0:0 in to the network/interface but i want to make sure that this is ...
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1answer
660 views

SoftLayer Desktop VPN client

I'm having an issue using SoftLayer's Desktop VPN client for linux. I've found that I am only able to successfully connect to my VPN secured services the first time I run the client. Every subsequent ...
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0answers
186 views

create a new connection and connect to hidden network disappears from network bar

My wireless network card is broadcom b4313,the default wireless driver installed with ubuntu 14.04 was not supporting access point mode. So I removed the default driver and installed brcmsmac driver ...
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1answer
1k views

Lubuntu 14.04 internet connection very slow (ethernet)

my internet connection is very slow. I have also windows XP installed and it does not have any problem. The PC is an HP Pavilion t3320.it the ethernet adaptor is "rtl8100"
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1answer
1k views

How do I make my laptop act as an NTP server in LAN without connecting to the internet?

I need to set my laptop as an NTP server within my own local area network. From what I notice, I am able to sync the client to my NTP server in a local area network ONLY when a.) There is an ...
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2answers
149 views

Working with two internet connections

That's my server network setup: /etc/network/interfaces auto ethLAN iface ethLAN inet static address 192.168.10.3 netmask 255.255.255.0 network 192.168.10.0 broadcast 192.168.10.255 auto ethOI ...
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628 views

I can ping but can't browse

I have Xubuntu 14.04 with the latest update and having issues connecting to the university's network. I'm running xubuntu on my chromebook and the internet works at home but I just started school and ...
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0answers
177 views

How do I find which OS layer (iptables, rp_filter, etc) is dropping a packet?

Let's say that I'm running a ping towards a machine and I see from tcpdump that the icmp echo reply is being received at the ethernet port but the ping program is not getting it. So I know that ...
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2answers
424 views

Ubuntu Server not reading /etc/network/interfaces

So after getting frustrated searching online and only ever coming up with posts about how to change EM1 to ETH0, I have come here to ask this question: What would cause Ubuntu Server to not load ...
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1answer
491 views

How to compress syslog-ng's network link, now that zlib is disabled in openssl?

In our servers infrastructure, for logging, we use a client/server setup, using syslog-ng, and stunnel as a mean of compression at the network level, through zlib at the SSL layer (syslog-ng doesn't ...
2
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1answer
541 views

Ubuntu 14.01 LTS can't access some websites

Something is wrong with Ubuntu Kernel and Windows DHCP,DNS Server. First i will explain my problem in few words and then ill post all my configurations. My ubuntu computer is behind a all-in-one ...
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2answers
59 views

Networking OK during install but not after reboot

(note wired not wireless) I just put 14.04 server onto an old-ish dell box with a realtek ethernet card on eth1 (eth0 is dead). lspci reports it as RTL-8100/8101L/8139. I did a complete reformat/...
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1answer
1k views

Ubuntu server 14.04.1 LTS wont install any packages after reboot

I just installed Ubuntu server 14.04.1 LTS on my old gaming pc to run a file server on. I got it all installed on the PC and was able to apt-get update and apt-get upgrade and install samba, openssh-...
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27 views

Does the desktop version have a limitation on TCP connection number?

We have a server application in JAVA, these days when the TCP connection number is more than 1000, I get the error message "too many open files", although I have increased the number of file ...
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1answer
136 views

Why is Ubuntu suddenly crippling my network?

I'm running Xubuntu 14.04 64-bit. I have recently started noticing randomly that my wireless adaptor suddenly becomes a jamming device for the network I'm connected to! I see 0Kbit/s in my network ...
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20 views

Networking - how to allow from second lan interface to access first lan interface? [duplicate]

I have one box with 2 ethernet interface: auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp auto eth1 iface eth1 inet static address 192.168.2.1 netmask 255.255.255.0 #network 192....
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3answers
11k views

Lenovo g5030 not having any hardware switch for wifi or bluetooth after installing ubuntu 14.04

In rfkill it shows wifi is hard block and bluetooth is also hardblock. Bluetooth soft unlock is working but wifi soft unlock is not working. Bios wifi is enabled. Can any body help me fix this?
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0answers
637 views

Why are browsing samba shares from Ubuntu (Nautilus) so much slower than browsing from Windows

I have a samba share over the a vpn server. Browsing the share takes 60 times longer from Ubuntu than it takes from Windows. From a Windows 7 Virtual Box (and any other machine in the shop) it takes ...
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1answer
45 views

Program that simply slows down a network?

This may seem like an odd question, but I have my reasons. I wanted to ask whether there is a specific program or shell that I can run to just make constant requests to a network which just eats ...
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1answer
380 views

14.04 - Network Manager takes too much time reconnecting after resume/wake

I have an Intel wireless network card in my notebook. Whenever I resume/wake/unhibernate my computer it takes about a minute or so in order to be able to connect to the Internet again. It's just too ...