Managing and using network connectivity on a Ubuntu system

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How to install squid proxy server on Ubuntu 14.04

I want to install Squid proxy server on Ubuntu 14.04 desktop. I have two network cards installed in the machine. I want use one interface to receive web requests from LAN ( 192.168.0.0/16). I want use ...
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17 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
81 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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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 ...
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166 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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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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19 views

PXE boot issue (error 32) / tftp

I have some old laptops that I'd like to boot via LAN. First, because the drives on these are failing / have failed, and because they're now both over 14 years old, and then for the learning ...
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32 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
108 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 ...
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47 views

Zero network traffic and no wake on LAN with Qualcomm Atheros QCA8171 Gigabit Ethernet

Up until recently, I was using Ubuntu 12.04. My Qualcomm Atheros QCA8171 Gigabit Ethernet network card seemed to be working fine: network traffic and wake on LAN both worked. I just installed Ubuntu ...
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Why does my MTS Mblaze data card keep disconnecting in ubuntu14.04 from time to time?? Plz help me solve this problem

I am a newbie to linux. I use ubuntu 14.04. I also use mts mblaze data card to access the internet. My data card gets recognised very well by ubuntu and i get to connect to the internet hassle free. ...
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Cannot access hotspot internet, after intstalling data card

I have been using iphone hotspot very long time and it was working fine. recently I started using Airtel data card 3G, after lot of going through tutorials and instructions i was able to install it ...
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1answer
34 views

softether VPN access list not working

I installed softether as VPN server on UBUNTU 12.4. nOW I add anonymous user for special range of ips. as you see blow i created a user named 'all' : and i created an access list to deny access ...
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1answer
40 views

Very slow Internet speed due to proxy

I have just installed Ubuntu and I am totally a noob. My proxy was 172.31.1.4:8080 and i added these settings to run the internet mozilla get the normal speed but when i try to download anything from ...
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39 views

reset network@ubuntu 14.04

Hi I've been trying to setup mobile hotspot in my laptop (ubuntu14.04) so I go ahead with "How to setup an Access Point mode Wi-Fi Hotspot?" after changing the files listed in the file I'm unable to ...
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17 views

ssh tunneling to Fritz!Box via RaspberryPi

I have a Fritz!Box that acts as NAS, DHCP and internet gateway. The webinterface of the Fritz!Box is only accessible from the LAN (I'd like to keep it that way, although it could be changed). Can I ...
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29 views

DSL cable NOT detecting on network settings

I have installed Ubuntu 14.04 (dual boot ) without plugging in my internet cable and when I did plug it in to configure my PPPoe connection, it says wired connection unplugged in network settings. I ...
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30 views

Slow network and file copy performance

I'm experiencing a weird problem with my Kubuntu installation. I'm running 14.4 now that was upgraded at least twice using the built-in distribution upgrade. The problems started after the last ...
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redirect mssql traffic via Ubuntu

I'm trying to redirect a Microsoft SQL connection from local LAN to VPN via Ubuntu The Ubuntu has connection to both networks I want to be able to connect SQL from my PC to the Ubuntu and it redirects ...
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1answer
61 views

Ubuntu 14.04 32/64 bits no usb mouse keyboard no network waiting for network configuration

i am used ubuntu and now i am reinstalled 14.04 64 and no mouse or keyboard or network i am use rescue console from install cd to gather this hw info my network card is qualcomm atheros AR8161 ...
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1answer
50 views

Can't ping Arch Linux machine from Ubuntu Server

I have a server and a desktop. Server: OS: Ubuntu Server 14.04.1 IP address: DHCP from Asus router, allocated by MAC address to 192.168.1.4 Connection: wired Ethernet, always on Desktop: OS: ...
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How do I create a DHCP server, with a router that doesn't allow me to disable DHCP?

I have an Actiontec V1000H Modem/Router from my ISP Telus, they have blocked access to all their 'advanced' settings like DHCP/Bridging. I have setup a MAAS server I have a few things I'd like it to ...
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Wirelessly Connecting a Laptop Running Kali Linux with a Pc With Ubuntu

I Have a Pc with Ubuntu 14.04 Installed and a Laptop with Kali Linux 1.0.6 . I have a Router and the pc is connected to the router via a ethernet cable and the laptop is connected to the network ...
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33 views

Network icon is not visible in my taskbar

I am using Ubuntu 14.04. Always, if I could start the system, the network icon will be showing in a taskbar, but suddenly my network icon is not showing in the taskbar. Please tell me how I can get it ...
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47 views

Wifi not working for time warner cable modem

Hi I just subscribed for Time Warner cable internet . They gave me a UBEE DW335 Cable modem . I have ubuntu 14.04 installed and the wifi does not connect only on this particular time warner network . ...
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mounting WD mybook as network share

how do i mount a mybook 2TB drive so it can be accessed from my network? machine is HP SFF W/ AMD Athalon II x2 B24 proc.,4GB ram,KDE4.13 kernal 3.13.0-35 , 32 bit
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How to start openvpn on boot?

I am running Ubuntu Desktop 14.04 x64. I have openvpn installed and a client.conf file in /etc/openvpn. However, openvpn doesn't start on boot. I would try editing /etc/default/openvpn to make it ...
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31 views

Hostname keeps being reverted

I'm struggling with a strange problem on a Ubuntu 14.04.1 LTS VM running on Azure. My hostname keeps getting reverted to something related to my Azure Deployment. In short: the system hostname does ...
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27 views

Setting up a Tracker with Opentracker

I'm trying to run my tracker for the first time. I'd followed the instructions on (https://erdgeist.org/arts/software/opentracker/) and when I run ./opentracker it seems to be working (no error or ...
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1answer
39 views

Sharing folders in NTFS partitions in a network with SMB

I have a computer on my office with Ubuntu 14.04 and a laptop with the same configuration. I would like to share a folder I have in the office computer inside the network. I went to this folder and ...
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1answer
49 views

Configuring two internet connections

First, I'm know there's lots of topics about this kind of problem but I can't found a solution to my specific problem. In my setup I have a Linux server with three interfaces: ethLAN for LAN with IP ...
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ubuntu 12.04 LTS dell inspiron 3137 - wifi issue rectified but wifi data card not working anymore

I installed Ubuntu 12.04 LTS on my new Dell Inspiron 3137. Initially when I inserted the wifi data card (its a Tata Photon Max Wifi Data card), it connected as wired connection and I could access the ...
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Need help adding a remote storage ubuntu 13.10 [closed]

Im trying to root my droid bionic and im having trouble creating a remote storage. Every time i tap connect i get back a window saying "Network Error. There is a problem in your network connection ...
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14 views

Server losing pppoe connection?

Hello, From a couple of days ago, I am experiencing strange behavior with by Ubuntu Server box. I have it conf as a gateway, with two nics and a pppoe connection to ISP. Everything works fine, until ...
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1answer
14 views

Samba Sharing on Mapped Share

So I'm trying to do something that may not be possible. I am running Ubuntu Server 14.04 with the latest samba. I have a Windows 2008 Storage Server Nas with a shared drive, that I mount in fstab in ...
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64 views

Wireless connection is very slow

I installed Kubuntu on my new HP-15 laptop that I just got. Initially the wireless connection was working well, but about two days ago I noticed a decline in the speed of the wireless connection. When ...
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45 views

Ubuntu 14.04 - Network problems (wireless and DNS)

I have seen a very similar problem on post: Cannot resolve dns on 12.10 install but with no clear answer and my problem is related to Ubuntu 14.04, another particularity is that this problem started ...
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12 views

Monitor network traffic usage per user by terminal?

Can you offer me some tools with which i can monitor traffic usage per user in WiFi/Ethernet network per user? And also will be good if i can see PC's name.
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23 views

Default adapter for Internet connection

I would like to ask, how can I solve my situation. We use this laptop with (X)Ubuntu 14.04 at work. At certain situations, we need to be connected to the Internet through 3G USB Modem and at the same ...
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42 views

vino-server: local connection works but not remote connection

I would like to remotely take control over ma grandma's PC, where I installed lubundu 14.04.1. This is not a duplicate of this other question (I want to avoid teamviewer + see below). I configured ...
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static ip in NetworkManager but ifconfig does not show the ip (ubuntustudio 14.04)

i am running ubuntustudio 14.04. I have a development setup where my pc has 2 NICs one of which connects to the internet and acquires dhcp ip from the router, while the other (eth1) is used to ...
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1answer
51 views

WiFi interface doesn't come up

All of sudden, my builtin Wifi interface on the laptop (HP Pavilion dv7, running Ubuntu 12.04, kernel 3.2.0-64-generic) won't come up. # ifconfig wlan0 wlan0 Link encap:Ethernet HWaddr ...
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How to tunnel all traffic through openconnect

I need to connect through cisco VPN: anyconnect. I found few articles (example) describing how to do that using openconnect and network-manager-openconnect. I installed both, configured the VPN ...
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68 views

How to connect my Wireless Epson WF-2540 to my laptop that is running Ubuntu 14.04 LTS OS

I downloaded Ubuntu 14.04 LTS OS on my laptop a couple of months ago. I just bought a Wireless Epson WF-2540 all in one (printer, scanner, fax, and copier) a week ago. I have the printer hooked up to ...
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2answers
61 views

Configure LXC with additional IP ubuntu 14.04

I'm still looking for answer on my question. I have a dedicated server with ubuntu server 14.04, and 2 public ip. I want to add 1 public ip per 1 lxc. I think i've tried everything and nothing helped ...
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56 views

Can't access second NIC

I have 2 NICs with the primary em1 the other is p3p1. It appears from ifconfig dmesg that both are up and working but I can't access p3p1 from my Java test application. No joy with ping either. ...
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openstack: vms exchanging multicast on eth1 fail when one suffers IGMP timeout

I have two identical trusty VMs configured with dhcp for eth1. I installed mgen and configured the mgen scripts to have the two exchange 1 multicast message per second for 360 seconds. One VM stops ...
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How to manage network in packet and out packet?

Looking for solution for Ubuntu system, I had a Computer with 2 different internet connection and 2 IP address. One is static Ip address where second is dyanamic Ip address. Want to receive request ...
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52 views

Can I restore a backup on a different computer than it was made?

I am using the default backup software for Ubuntu 14.04(deja dup). It backs up weekly to a network location. I'm about to put a new hard drive in my laptop, and I would rather just install ubuntu and ...
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32 views

How to route inbound traffic on one interface to another interface in the same machine?

I have searched the forums, but can't find a solution that addresses my use-case exactly. I need to do this on a remote machine and so don't have a lot of latitude to get this wrong (and possibly lock ...