Managing and using network connectivity on a Ubuntu system

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Why is SSH not accessible after installing KDE on Ubuntu Server?

I installed KDE onto my Ubuntu server, which is operating as a file server. It installed a firewall that wasn't there previously. I can't reach any of the services I had operating on the box now, ...
3
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2answers
531 views

How to directly connect 2 Ubuntu PCs via wi-fi?

I want to create a direct link between 2 PCs via Wi-Fi without using a router to avoid a bottleneck. What should i do? Both PCs uses Ubuntu 12.04 amd64.
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1answer
195 views

Ubuntu keeps reconfiguring my network

I'm configuring a "network", between two computers(both with ubuntu 12.04), using a crossover cable and assigning all ips by hand. When I set up an interface, with IP netmask etc, everything works, ...
1
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1answer
577 views

Step by step copy paste tutorial for configuring VNC/RDP without a reboot

I have an existing ssh connection between my computer (A:12.04) and a remote computer (B:10.04) (from A I just type ssh B). I have root access on both. Both use ubuntu desktop edition. I am struggling ...
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1answer
1k views

How come no one outside my network can connect to my Owncloud server?

I installed lawn software for internet online for my server, I installed owncloud 4 on it. I can connect to it using my newwork internet, but no one out side my internet newwork can connect, they say ...
7
votes
1answer
12k views

MySQL server not accessible from remote machine

I have installed MySQL server in my local Ubuntu server (11.10). I can't connect to the server from a remote machine. When I tried:- nmap localhost , It shows the following PORT STATE SERVICE ...
1
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1answer
328 views

Century Link ISP only supports Microsoft OSes

I'm trying to set up my computer to run through my roommates ISP, when I initially get online I have to go through his ISP's set-up process, when I get to the end of the process it tells me that it ...
7
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3answers
2k views

2 internet connections on a single PC

If I have a wireless and a usb internet connection on my Ubuntu 12.04 as in: At the moment, Ubuntu seems to only make use of the Wired connection which is the usb connection. Is it possible to get ...
2
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1answer
140 views

ssh login information

As the admin of my machine, I want users to be able to log into my computer with ssh, but I'm looking for a graphical way to be notified that a user is connected at the moment. If multiple users are ...
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2answers
11k views

DHCP not working on new install

A new Kubuntu 12.04 install is not getting IP addresses from either the wired connection nor from any wireless connection. The cables / router ports / wifi adapter / access point are all known good ...
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1answer
308 views

wired resolves dns but wireless dont

My wireless won't resolve dns but my wired connection does. I've tried: $ sudo /etc/init.d/networking restart and: $ sudo dhclient -r $ sudo dhclient as I saw at that question. But it didn't ...
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4answers
3k views

No internet in 12.04 or 11.10 neither on wired nor wireless

I just installed Kubuntu 12.04 on a new computer with an Asus motherboard containing onboard NIC. The onboard NIC is enabled in BIOS. I don't happen to have a spare network card to test with. The ...
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1answer
5k views

How can I change the port of Remote Desktop?

How can I change the port of Ubuntu's built in Remote Desktop?
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2answers
292 views

Starting over and new to Ubuntu

We have been having repeated problems with our interent service and using windows xp & sp3 (users and premissions) I see no need for them. I started with computers long before windows. Every since ...
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2answers
1k views

Upon booting, wifi won't work until disabled and re-enabled

After booting Ubuntu 12.04 64 bit, I am not able to connect to Wifi, until I disconnect and reconnect. This has been happening for a while but I am finally getting tired of reconnecting after a boot, ...
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2answers
1k views

After upgrading from 11.10 to 12.04 I don't have ethernet connection, how to solve it?

I had a wired network connection that worked fine in Ubuntu 11.10. I upgraded to 12.04 and immediately after the upgrade was completed, the OS reported my cable unplugged. It was not unplugged and ...
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2answers
10k views

Can't connect to windows 7 ad-hoc network

Good day! I have installed ubuntu 12.04 on my laptop and I need to have network connection on it. Have a desktop PC, where I've created ad-hoc wi-fi network(Windows 7) and can't connect to it. So, ...
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1answer
351 views

Why does my Empathy work with wifi but not with wvdial on 12.04?

I really need help for this issue . My empathy works well when I'm online using WIFI .. but it does't work when I'm online using wvdial. . in ubuntu 11.10, empathy works great.. any ideas to fix ...
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1answer
7k views

Network-Manager restart impossible

~$ service network-manager restart stop: Rejected send message, 1 matched rules; type="method_call", sender=":1.77" (uid=1000 pid=10033 comm="stop network-manager ") ...
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3answers
24k views

How do I set up file sharing between two Ubuntu laptops on my wireless network?

I have two laptops running Ubuntu 12.04. Both connect to the same WIFI network to access internet. How do I connect them to each other so that I can access files on one from another and vice versa? ...
0
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1answer
967 views

Are these dmesg gaps causing my 12.04 to boot up slowly?

I am having a really slow boot on ubuntu 12.04. Below is my dmesg log's major gaps: [3.704928] EXT4-fs (sda6): mounted filesystem with ordered data mode. Opts: (null) [26.933486] ...
2
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2answers
587 views

no wired or wireless networking on new install [closed]

This is a new install of Ubuntu. I ran 12.04 from a usb drive for a day or so, and had no issues outside of some latency that is more due to the lack of RAM on my aspire one D255e than to OS. I had ...
0
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1answer
54 views

How can I print a file using a printer connected to a different machine on the same LAN

What's the simplest/best way to print files from any local machine, using a printer connected to only one of them.
6
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1answer
5k views

Static IP configuration causing apt-get errors

I am getting errors when running apt-get update or when installing new packages. Although this only happens when the server configured for a static IP address. Changing the configuration back to ...
0
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1answer
312 views

Quickly and Python Twisted

I am creating a Quickly application that makes use of Python Twisted. When the user launches a window, I want to start the Twisted server I wrote. However, when I do this, it freezes the GUI, because ...
6
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1answer
4k views

Configuring the dnsmasq instance started by connection sharing in NetworkManager

I've got a laptop running Ubuntu 12.04 that is sharing its wifi connection to another machine through the eth0 interface using NetworkManager. This seems to be done by dnsmasq. Now I need to set up ...
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1answer
496 views

Upgraded from 11.10 to 12.04 now no network access

A few weeks ago I decided I should enter the Linux world and read that Ubuntu is the most widely used release. I installed version 11.10 and it worked perfectly. Just this past week I decided I would ...
1
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0answers
859 views

How do I set a system-wide proxy in Lubuntu (or LXDE)? [duplicate]

Possible Duplicate: How do I set systemwide proxy servers in Xubuntu, Lubuntu or Ubuntu Studio? In Ubuntu with Unity, we have an option to set a system wide proxy. When I tried Lubuntu ...
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2answers
72 views

Why is Update Manager non-responsive and why is my wireless off?

I am new in using Linux. The problem I'm having is with the update manager. I have it pinned to the launcher but when i left-click it does not respond. When i right-click it it responds by showing me ...
0
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1answer
1k views

Monitor Internet Usage on Ubuntu [duplicate]

Possible Duplicate: How can you monitor internet download usage? Any idea how one would monitor internet usage on a laptop to find out if any unauthorised program is making internet ...
7
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1answer
8k views

Ubuntu 12.04 recovery mode root shell has no internet connection

I'm debugging some things on my computer and I boot into recovery mode from the grub menu. Then it gives me a bunch of options on what to do next, and I select the one that drops it to a root shell. ...
3
votes
2answers
6k views

Bridging: Loosing WLAN network connection with 4addr on option - Why?

Question: For use with my Xen VM, I need to create a virtual network interface (vif) that is bridged to wlan0. If in /etc/network/interfaces I add auto xenbr0 iface xenbr0 inet dhcp And ...
6
votes
1answer
2k views

Block Ping from a specific IP

I am on a private LAN 192.168.1.0/24. My ip is 192.168.1.3, I want to block only ping requests from 192.168.1.2. I am running ubuntu 11.10. I found two links First tells how to block an IP but not ...
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2answers
717 views

Thinkpad x220 wireless network slows down after some time

I installed Ubuntu 12.04 LTS on my Thinkpad x220. When I connect to a wireless network, the network speed starts out normal. But after a certain period of time (say, 10 minutes), the network speed ...
10
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2answers
9k views

How to disable/enable automatically connecting to WiFi?

Whenever I restart my WiFi router, Ubuntu tries to connect to my neighbours' WiFi networks. There's over 30 wireless networks in the area. Ubuntu prompts me for the password to all of those. This is ...
2
votes
1answer
5k views

Setting up a Network Printer

I have a Canon MP970 printer and I want to setup network printing and scanning on my laptop. I got it set up on my desktop (running Windows 8 Release Preview x64). How do I start?
3
votes
1answer
408 views

Resetting network adapter?

I'm running Ubuntu 12.04. I get a strong wireless signal throughout my house, and the wireless symbol in the upper-right-hand corner shows that it's connected. The problem is, occasionally I am unable ...
0
votes
1answer
946 views

Need to install ethernet firmware for Dell PowerEdge 2650 integrated BCM5703 NIC

I have a Dell Poweredge 2650 and I'm trying to install the ethernet firmware/driver. I found this page but I can't figure out how to install it. Their isn't a loader.conf and I would like to avoid ...
1
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2answers
5k views

How to set-up DSL dialer for Ubuntu 12.04 LTS

I have just installed Ubuntu 12.04 LTS and I'm unable to get my DSL dialer working properly. To set this up in Windows 7 I had to do following: Control Panel ---> Network and Intertnet Network and ...
0
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2answers
758 views

Connection to openVPN Access Server

we are using an openVPN Access Server and I would like to connect to it via the VPN network setting (network-manager-openvpn). I downloaded the client.ovpn and I can connect to the server via the ...
5
votes
4answers
23k views

Ubuntu 12.04 network printing through Windows Samba server

I have to print through a Samba server sharing an HP printer. After upgrading to 12.04 I'm no longer able to get it to work. The printer is shared through a samba server and I need to provide logon ...
2
votes
1answer
238 views

What's the best way to get a file from one computer on my network to another?

I have a desktop, a laptop running ubuntu and an old box running ubuntu server with no gui or monitor. I need a reliable way to move files from the desktop and the laptop to the server. I am now ...
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2answers
3k views

static ip issue

I just installed ubuntu 12.04 and I'm trying to set up my internet access. I just have a wired connection so it should be quite simple. My computer has two interfaces, eth0 and eth1. I'm not sure ...
0
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1answer
199 views

Network connection problem

I am using ubuntu 11.10 LTS. when I switch on my lappy, the network connections i have created works fine, but after sometime (not always) they disappear and no connection lefts available for use. ...
2
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0answers
152 views

Problem enabling “networking” options GUI

From couple of days I'm facing this problem? When I turn on my system (I'm using ubuntu 12.04), I dont get various networking option's when I click the networking option (in top right corner of the ...
1
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1answer
744 views

How do I configure networking when using XEN on 12.04 Server

I'm following this guide, https://help.ubuntu.com/community/XenProposed, and I'd like to setup a static IP address, but I don't know how. I'm using 12.04 Server. This is the step I'm having trouble ...
9
votes
2answers
5k views

How do i find out which program is using internet and how much? [duplicate]

Possible Duplicate: How do I find out which process is eating up my bandwidth? Sometimes there are unusual Internet activity in my Computer. Modem's lights are always blinking and When I ...
2
votes
1answer
6k views

L2TP connection fails!

I've installed l2tp-ipsec-vpn but when I try to connect to the vpn server I get error 500. Here are the logs: Jun 17 12:54:37.449 ipsec_setup: Stopping Openswan IPsec... Jun 17 12:54:38.858 Stopping ...
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votes
4answers
24k views

How to make dhclient forget its last DHCP lease?

What I'm trying to achieve is to get cold-start, zero-state DHCP lease which means forcing dhclient through the full discovery and configuration process (DHCPDISCOVER–DHCPOFFER–DHCPREQUEST–DHCPACK as ...
0
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2answers
3k views

Connecting to multiple networks simultaneously?

Does connecting to multiple networks with different subnet in Ubuntu actually require some extra steps to work correctly? I have 2 network interfaces on my computer, one is wired nic and the other is ...