Ubuntu Networking :: Setup A Network Of 21 Computers Running Edubuntu 10.10?
Feb 7, 2011
I have recently set up a network of 21 computers running Edubuntu 10.10 I use iTalc to communicate with the pcs and also to shutdown all of them at once. The only problem I have, is it doesn't start up again with iTalc. So I switched to ClusterSSH. Only problem I have now is that everytime I run cssh, I need to manually add IP addresses of all the pc's, before I can start issuing commands. Is there a config file or something I can populate with all the IP addresses so that it starts up with all of them already added? And while we are at it, the command to start up a computer on the network?
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Sep 16, 2010
I am wanting to setup an office network consisting of three computers and one server. We already have the equipment ready with Vista Business pre-installed on the computers. I want to be able to create a network which allows users to use any machine as this will reduce downtime should a machine break. Also I would like user's files to be held centrally on the server which makes backups easier.
The most important element here is data backup. As like most businesses we are moving away from paper and using the computers to store important records such as customer information. If this data were to be lost, the business would come to a complete halt.
I have been looking at the idea of installing a Microsoft Small Business Server as it would be nice to have centralised control of the machines. However the cost would be over 800 which can not be justified for three machines and five users. Therefore I am turning to Linux for a alternative solution. I have previously used CentOS and Ubuntu for home use but never really gained much knowledge or experience of either.
It is my understanding that Samba can act as a Primary Domain Controller, which if I'm not mistaken is where it handles the network logins and profiles. Is this correct? I have come across many samba tutorials online but whats confusing is they are all different. Some of the tutorials involve using Kerberos and OpenLDAP. Do I need to learn about either of these? What do they do and what benefit will they bring?
Finally, I see Samba 4 is in development and is likely to bring a lot of new features which aren't available in Samba 3. Is this worth waiting for because I don't want to be upgrading everything again 6 months down the road?
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Oct 8, 2010
is there anyone knows how to setup and configure thin client in edubuntu 10.04?. From the beginning installation until thin client work.we have 2 set of computers. 1 computer installed edubuntu 10.04 and installed LTSP (Linux Terminal Server Project) in the OS without NIC Card. And the other computers has only NIC card.. We setup it in the bios as a "First Boot" Network Card. We connect 2 computers using "pair-to-pair connection". There and after, we restart the 2 computers. "Nothings Happened".
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Mar 15, 2011
I'm trying to setup a OpenVpn on my Ubuntu 10.04 and after doing the configs from here: [URL] I get an error:
[Code]....
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Jan 31, 2011
im trying to connect two computers on lan.One computer has: VMWare Workstation and has Opensuse 11.3 mounted in it.The other computer has: VMWare Player and has Opensuse 11.3 mounted in it.Both computers are connected to a switch with cables.I have followed this guide in both computers:Depanati singuri calculatorul!: Opensuse 11.3 - configure local networkin order to setup a network.In one computer, if i go to: Computer---Network---Network folder, i only see one machine. When in fact i could see both of them right
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Oct 2, 2010
When I try to use Nautilus to connect to another computer on my network, and I attempt to connect using the name of the Windows XP computer I am connecting to, I get the following error; Could not display "smb://computername/". Error: Failed to retrieve share list from server Please select another viewer and try again. However when I attempt to connect using the IP address on the network, it connects instantly. smb://192.168.1.101/ Why doesn't it connect using the computer's name? What am I doing wrong?
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Nov 22, 2010
Does anyone know of an app that I can use to view all the computers connected to my network and the IP addresses to those computers?
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Apr 16, 2010
Just installed 10.04 LTS beta on 3 computers in home. At first, two of them showed up under the network window using places. The third never did and would not find the shared printer. After all rebooted, none show up. All three can access the internet and can display a valid internal network ip address using ifconfig.
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Aug 16, 2010
For some reason, all the computers on my network can't reach each other via their host names. For example, the ping command doesn't recognize host names:
Code:
$ ping file-server
PING file-server (208.68.139.89) 56(84) bytes of data.
^C
--- file-server ping statistics ---
20 packets transmitted, 0 received, 100% packet loss, time 19152ms However, ping works fine if I use IP addresses instead. I would put the address for "file-server" in my /etc/hosts file, except for the fact that DHCP changes it's address occasionally.I attempted changing the line
send host-name "<host-name>";
in /etc/dhcp3/dhclient.conf to
send host-name "file-server";
but to no avail.
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Sep 27, 2010
what I want to achieve is just to be able to say to who ever is killing our relatively fast connect that they aren't the only person using the network. Everyone just says "I hardly download anything." which is obviously untruthful as normally I can download at 1.5 MB/s but now loading even google.com takes way too long (same with pinging and all other sites). Once I do this, I can determine whether or not I need to call my ISP and do the long 'on hold' dance and "have you tried rebooting the router" BS.
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Apr 17, 2010
I am interested and looking forward to get a smartphone or a personal data assistant with calendar/ email/ contacts just like the iphone does.My intention is to be able to sync my smartphone's data with my home server that actually carries my PIM applications. Basically, during the day when I am not home I will modify or add/remove data from the phone. When I arrive home I would like to be able to sync my changes to my server. My laptop will be reconfigured to retrieve and sync from that server.
Proudly running with Slackware on ALL my machines (gotta love Slack!), and Apple being **** by not supporting open source and linux environment, it seems that it will be difficult to have something working out of the box and will probably require jail-breaking the device, etc.. I don't want to rely on external services such as Google calendar except for the email from Gmail.
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Oct 23, 2010
When I goto Places->Network sometimes I see the other Windows computers in our house, and sometimes I don't. How do I make this more consistent?
When I double click on the "Windows Network" icon right now, I get "Failed to retrieve share list from server". Sometimes this works and I get to see the shares on the Windows pcs.
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Apr 15, 2011
I have installed Micro Core onto a usb of mine and am running it on my laptop. I have been able to successfully obtain a connection and valid ip with my router. As you can see below my wireless connection seems valid computer-end and on my router's page it comes under the list of attached devices.Although this is all fine and dandy, I'm am unable to ping my router or any other computer on my network, I am also unable to ping my laptop from other computers on the network. Also by the looks of it I have having no trouble transmitting, but I am not receiving any packets.
[Code]...
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Feb 4, 2010
Im trying to setup multiple domU through the default bridge setup. I am able to access only one of them through the network at a time. If you ping one of the domU it works perfectly but you cannot ping any of the others until you stop pinging the one and even then it takes a bit before you can. Ive looked around for a while and seen similar problems but nothing ever seems quite the same. Im probably missing something really stupid. Or is this the way the bridge is supposed to behave? Do i need to use a routed virtual network?
[Code]....
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Feb 1, 2011
i have recently had a house mate move in and he is using my wireless network, even though i asked him not to give out the network key to his friends either he has or they have hacked my network and are using it when they come over, is there a program i can use to monitor the number of computers that are connected to my network and block them, or is there a way i can just wee what is going on. They seem to just connect and i don't want to have to change the password particularly because that involves changing it on multiple devices.
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Dec 25, 2010
Hi. I have Ubuntu 10.04, nm-applet is running in the background, my battery icon and sound icon are showing but my network icon has been missing for the past 2 days. It was working fine before but now it's not. How can I fix this issue if I don't have an ethernet cord? Is there a way to roll back the recent updates or do I need to reinstall my network manager?
I've tried restarting the system and I've tried killing nm-applet and reloading it using Alt F2. I get some Debug error.
When I try to run nm-applet --sm-disable
It says an instance is already running and then gives me a warning.
I tried removing "iface eth0 inet dhcp" from /etc/network/interfaces and then tried restarting by "sudo /etc/initi.d/networking restart"
It says:
What can I do to connect to the internet? I have a flash stick if its possible to download a .deb package on this mac and transfer it over to my other laptop to fix the problem. If its possible.
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May 20, 2009
I have built a linux router with a pc having two network cards. I am running ubuntu 8.10.
I have enabled forwarding on the router. One network (192.168.1.0/24)is connected to eth0 and another (192.168.2.0/24) is connected to eth1.
The interfaces have addresses 192.168.1.1 and 192.168.2.1.
On any side side of the network, I can ping both interfaces on the router.
However when I ping a machine on the other side of the network, I get 100% packet loss.
I have not touched iptables on the router or any machines.
What I am doing wrong?
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Jun 6, 2011
How do I set up an ad-hoc network? Running Ubuntu 10.10.
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Feb 18, 2011
I'm having ubuntu 10.04 on my pc. How can I setup LAN between two systems in ubuntu?
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Jun 18, 2010
\How can i setup my computer (currently running Ubuntu 10.04 lts) into a router so that other laptop can have a wireless connection to it and be able to access the Internet?
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Apr 7, 2009
Using Fedora 10, can anyone tell me how to setup the network scripts to create two network interfaces for vlan x and y. Both interfaces should obtain an ip from dhcp and both interfaces should run over eth0.
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May 25, 2010
Cannot activate network device eth0!"device eth0 does not seem to be present, delaying initialization".i cannot find my network card while i set up network configuration Now I use dual boot window 7 and fedora 9,I cannot find my network card in select network adapter while network configuration ,i have a network card Atheros AR8132 PCI-E fast Ethernet controller NDIS(620)and for wired in Accer laptop .
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Apr 7, 2009
Can anyone tell me how to setup the network scripts to create two network interfaces for vlan x and y. Both interfaces should obtain an ip from dhcp and both interfaces should run over eth0.
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Aug 12, 2009
I am attempting to setup a network to network VPN tunnel between our main office and a temporary location. This location need full VPN access back to the main office's network.Anyhow we have spent about 3 solid days attempting to make this work without any great success. Here is our network scheme for these two devices.
Network A (Main Office) (OpenBSD using isakmpd)
Network: 172.16.8.0/24
External IP: 1.1.1.1 (obviously not the real IP)[code].....
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Jun 10, 2010
I use to keep a running instance of Apache in order to test my sites locally. I'm usually not that fussy about security, assuming my 80 and 8080 ports are closed (and, well, also the other ones).Anyway this evening I was just logging into PHPMyAdmin when I found the default username was a string of garbled characters. When I entered PHPMyAdmin, I was greeted with the message
Code: Additional features have been disabled in order to work with linked tables. To find out why click here.So I clicked and it seems that the error comes from the table
Code:
$cfg['Servers'][$i]['tracking']
which has been disabled. Everything else SEEMS ok at first sight.So now I have got a few questions.
1) I checked via canyouseeme.org and the default ports are still closed. This mean it should be impossible to even try to do something on my Apache remotely, right?
2) How do I reenable the additional features?
3) How do I check if someone else logged in?
4) What about the garbled name at the login? This should be just a Firefox thing, or actually PHPMyAdmin does suggest the name of the latest login?
5) How do I set up Apache to serve only the computers in the LAN? At worst, even only the local computer would be good.
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Aug 22, 2010
I've currently got a Xen box with 3 Virtual machines on it, in a routed setup. I'd like to put them all on a private internal network as well, which I'm assuming I'd do with a dummy network card and a xen bridge, but I can't find any information about setting up the xen Bridging setup on top of the existing network-route instlal.
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Apr 13, 2010
I would like to set up a remote desktop connection between two computers over the Internet. I already tested remote desktop within a local network but it's far from secure enough this time. I will try to follow this guide [URL] (ssh portforward and internet). This still leaves ufw and how it should be configured. Let's say I have this setup, server computer has ip 12.341.245.124 and the client has 78.12.543.234 how should ufw be configured to be secure? This remote desktop wont be connected to a local network
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Aug 16, 2010
I'm trying to set up a centralized log-on scheme in a research lab with about 10 computers. It's looking like we're going with LDAP - this decision may be out of my control (but if there's an alternative that would be REALLY better, do let me know). My question is we don't really have a domain name, so when all the tutorials say cn=example,cn=com, I can't mimic this exactly. I've been trying to get away with just one, like cn=researchlab. Will LDAP work with just one, or do I need to invent a second also? On the flipside, will it work with more? Our server can be reached by
lab.department.school.edu, could I do cn=lab,cn=department,cn=school,cn=edu?
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Jun 27, 2011
Trying to set up a LAN with an FC14 laptop, FC15 PC and a Windows machine running XP. I have SAMBA installed on both FC machines, but neither of them can see shares on each other or the XP machine. I can ping between all of them. The Windows machine sees all of the SAMBA shares.
When I attempt to Connect to Server under Places on the FC15 PC, I do not have a Windows share option to choose from as I do on the laptop, suggesting smbclient isn't configured correctly on that machine. SMB, NMB and WINBIND are installed and activated on startup on both FC machines. Although I have the Windows share option on the FC14 laptop, it will only connect with the IP address.
Firewalls and SELinux on both machines are disabled. Here are some configuration details:
rpm -qa | grep samba
samba-3.5.8-68.fc15.1.x86_64
samba-winbind-3.5.8-68.fc15.1.x86_64
samba-swat-3.5.8-68.fc15.1.x86_64
system-config-samba-docs-1.0.9-2.fc15.noarch
samba-winbind-clients-3.5.8-68.fc15.1.x86_64
[Code]...
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Nov 18, 2010
I've been learning linux for a while now with half an eye on making a career out of it in future. One sizeable gap in my knowledge at the moment is networking. Is it feasible/desirable to set up a network of virtual machines to use as an environment to learn networking? My budget is non-existent so I was hoping to be able to get a basic understanding of the principles from installing a few desktops, a virtual gateway etc on VMware workstation on my laptop, and doing a lot of reading online.
Is this feasible, or will I just end up learning about virtual networks instead of real ones? Also how much power would be required, because my 3GB RAM lappy has just gone bang and all I have now is a (new) 1GB RAM lappy.
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