Networking :: Thin Clients On The Network All Have The LTSP Server IP While Surfing?

Dec 10, 2009

My 32-bit Ubuntu 9.10 [Karmic Koala] LTSP server has two NICs, one with Dynamic IP set by a DSL modem and the other with static IP of 192.168.0.254. I also have 4 thin Clients that boot from this server without any problems and another computer with Ubuntu 9.04 running some PHP programs with dynamic IP given by the same DSL modem. When I send requests to these PHP programs from thin clients, they all give the LTSP server's dynamic IP as their IP so I cannot trace who has sent this request to response back.

I actually know this is logical. Because the requests are sent by a program that's actually running on the LTSP server rather than the thin client. But my question is How can I run a program on a thin client with it's own IP? I also should mention that the dhcp3-server service running on the LTSP server has no conflicts with the DSL dhcp on the network and I know that the 4 thin clients get the IPs ranging from 192.168.1.101 through 192.168.1.104 from the dhcp3-server service. Because I can ping them while they're on. but /sbin/ifconfig on them shows info about the LTSP server.

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Ubuntu Networking :: Ltsp Server Subnet - Log Clients To The Parent Domain?

Mar 10, 2011

I have an Edubuntu server with two nics joined to the primary windows domain and I can log on with domain credentials and everything is AOK. I used LikewiseOpen 6 to join the server to the primary domain. So, on my Edubuntu server eth1 is connected to the primary domain and has a static IP. eth2 also has a static IP and is the DHCP for the thin client subnet, connected to a switch. IP forwarding is enabled.

DOMAIN - eth1 - Edubuntu Server - eth2 (SUBNET) - switch - clients

So far, so good: I can log on the thin clients with one of the local accounts specified on the Edubuntu server and with that account I can surf the net and, if I supply domain credentials, browse the primary domain. Problem I have is:

I can't work out how to log on to the primary domain with a Active Directory account directly from a thin client. If I try DOMAINuser to log on, after giving the password, the password screen refreshes and 'domainuser@11.*.21.*'s password' appears under the blank password box. The IP in that message is the IP for the subnet and not the primary domain. I feel like I'm miss-understanding some basic simple step but I just can't figure it out.

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Ubuntu Servers :: Install And Configure LTSP On A Server For A HP Thin Client To Boot Off?

Jul 22, 2011

I am trying to install and configure LTSP on a server for a HP thin client to boot off. The version of Ubuntu that I am using is 11.04 x86 and it is a fresh install on a dual core system with 2GB RAM. I followed a guide which comprised of these commands.

sudo apt-get install ltsp-server-standalone openssh-server sudo ltsp-build-client or if your on a 64-bit system with 32-bit machines do sudo ltsp-build-client arch i386 for editing the servers IP values use /etc/ltsp/dhcpd.conf after that you need to restart DHCP server sudo /etc/init.d/dhcp3-server restart
and update sshkeys -sudo ltsp-update-sshkeys and if you updated dhcpd.conf then you need to update you image also by typing in terminal ltsp-update-image

Everything seemed to install as it should but when I try to boot from the thin client it just times out and says no DHCP or proxy invites received. I turned DHCP off on the router and even tried another router, but I still get nothing. I am at a bit of a loose end and I hope someone on here can point me in the right direction of where I am going wrong.

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Networking :: Diskless Thin Clients On Wireless LAN Possible?

Apr 1, 2010

That is, the thin clients will have to get their OS image via TFTP, and their IP address via DHCP on a *wireless card* - is this possible?What spec should I ask for/search for when buying the WiFi card?

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Ubuntu :: Set NTP To Point To An External Server, But My Thin Clients Don't Get That Setting For Some Reason?

Apr 8, 2011

I'm running several Ubuntu servers with LTSP thin clients in our classrooms. It's been a royal pain trying to get them to synchronize time properly.Currently I'm looking at 7 client's login screen and each one has different time. It's frustrating and I've done all the reading I could in regard to NTP and LTSP with time, etc.I'm trying to even set NTP to point to an external server, but my thin clients don't get that setting for some reason. They still pick whatever time they want to present to the end user. Once the user logs in, the time seems to be fine. It's just at the login screen.Since I'm no expert on NTP I figured I'd ask to see what users here thought.

EDIT - I was told that the GUI version of Ubuntu handles NTP at System-Administration-TimeAndDate. Is this true? I was told my /etc/ntp.conf file is empty because that file is only used in the server edition of Ubuntu.

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Ubuntu :: Can't Shut Down LTSP Thin Client When Using Autologin?

Feb 25, 2010

I just finished setting up a new computer lab at my kids school, using LTSP and 22 think clients connecting to Ubuntu.Everything is going beautifully, and I'm using static IPs and autologin so that when each computer is turned on it logs itself in with no userintervention. The problem is, when users go to the top right system menu and select "Shut Down", they are brought out to the login screen for a second and then immediately logged back in automatically to the Desktop. How should I be shutting down the thin clients?he only way to do it at the moment is to have everyone hold the power button down until the CPU shuts off, but it feels sloppy and unhealthy.

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Ubuntu :: Getting A CAC Reader To Work With A PXE Booted LTSP Thin Client?

Nov 30, 2010

getting a CAC reader to work with a PXE booted Ubuntu LTSP thin client?

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Ubuntu Servers :: LTSP Thin Client Splash Change

Jun 6, 2011

I have been working/implementing LTSP based thin clients now using Ubuntu 10.04 LTS 32bit server. I intend to change the default purple Ubuntu splash. I have already removed the "quiet splash" parameters in the pxeconfig file. And it works, giving me a text boot. But what i needed was a replacement for the splash.

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Ubuntu Networking :: LTSP Server Doesn't Have Client Network Card Driver

Sep 1, 2010

I'm setting up an LTSP server using Ubuntu 10.4 64bit, and PXE connecting with thin clients using Atheros cards. The ltsp environment is 32bit.

Unfortunately I get an error message with "No interfaces found! Aborting..." and a kernel panic early during PXE boot.

After an enormous amount of investigation, I've narrowed it down to (probably) being the fact that the ltsp chroot environment doesn't have the correct driver for my network card (I believe it's atl1c). The correct driver IS available in Ubuntu, though, as I can successfully boot the thin client from both 64bit and 32bit live CDs and bring up the network interface.

how can I install the correct driver in the PXE environment?

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Fedora Servers :: Serving Windows Thin Clients

Jan 19, 2009

My brother and I want to set up a server off of which we would provide the processing power for several thin clients. Is it possible to serve the thin clients with images of Windows XP to run?

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Ubuntu :: Thin Clients Not Mounting Local Hard Drive?

Dec 19, 2010

I'm running LTSP on 11.04. The clients boot fine and will recognise the local CD and local USB drives but it doesn't mount the HD?

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Ubuntu Servers :: Running Localapps In 10.04 LTSP Clients?

Dec 8, 2010

I've successfully built my server, and any fat or thin client that I connect to it boots wonderfully, with great response. I've gone through this exercise because we need a more efficient way of testing computers before delivery to our customers. So, I'm trying to run Passmark's BurnInTest. I've run it before with previous versions (9.something, I think) and it worked well, but I needed to build a new server so we can test more computers concurrently, so I figured I'd get the latest release.

My problem occurs when I try to run BurnInTest - it must have root access to test the local USB, parallel, and serial ports, and the optical drive. For the previous iteration I used a script that dropped into a local xterm session, su'd to a root session, and called the BiT GUI. In this attempt, the same scripts, even when I single-step them manually, results in 'authentication failure' when the su is attempted.

I have enabled the root account and created a password for it in the chroot /opt/ltsp/i386, and rebuilt the image, multiple times, no joy. Using ctrl-alt-F1 I can log in as root, and using dmesg I can see the USB device register when I connect it, so as far as I can tell the root account is alive and well, just not available in a local xterm session for some reason.

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Debian Configuration :: LTSP : No Sound With Iceweasel And Flash Plugin On Clients?

Aug 24, 2011

i set up an ltsp server on debian squeeze. after a standard installation, sound doesn't work on clients.

[code]...

when i start iceweasel normally (executed on server side), i get sound on the client. when i start ltsp-localapps iceweasel, i get no sound on flash sites and videos videos.what's wrong ? with local apps, is it possible that the flashplugin-nonfree doesn't talk to alsa ?

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Ubuntu Networking :: Internet-sharing To Thin Client From Server 10.04?

Sep 20, 2010

i want to share the Internet connection to thin client from my Ubuntu server,Internet is accessible to my Ubuntu server but i am unable to boot from thin client to server,i configured DHCP but of no use.can any plz send me the detailed steps to configure thin clients in my network

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Networking :: Sharing Internet Connection To Thin Client From RHEL Server 5

Sep 22, 2010

plz can any one help me in configuring linux server 5.0 to share the internet connection to thinclient and the steps reqiure at client side and server

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Fedora Networking :: LTSP - NFS Server Not Responding?

Feb 12, 2009

Currently have a problem with my LTSP server when using a gigabit switch with a megabit thin client.I am using K12LTSP with Fedora 9.The thin clients get most of the way through booting up then I get error messages saying:nfs: server 172.31.6.1 not responding, still trying.I don't get this problem if I use a 100 meg switch though.I have found several forum posts on the internet which all seem to point to the following webpage with a solution:However, when I make the recommended changes It doesnt make a difference.Below is an example of the default file located at /var/lib/tftpboot/ltsp/i386/pxelinux.cfg with its default settings:

Code:
prompt 0
label linux

[code]....

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Ubuntu Networking :: LTSP Server Install On 10.10?

Nov 17, 2010

I installed in Virtualbox many times and the clients would not connect. The config of the dhcpd.conf was the problem.Now, Everywhere I kept reading it said I had to turn off my hardware routers dhcp. Thats wrong, I have it working with it on and with one network card. Heres the nuts and bolts. Dlink 4100 hardware router assigning address block 192.168.2.200-250 to pcs on the lan. Router is set to reserve and IP for the ltps server nic so it gets the same IP assigned every time from the hardware router. No need to force linux to an ip when it can be set in the router. Then installed LTSP from alt-cd. Once done, dhcp wont run because it conflicts with the hardware dhcp. Found out by trying to restart it and it said stop - Fail when it tried to stop it.

sudo /etc/init.d/dhcp3-server restart
So edit /etc/ltsp/dhcpd.conf.
sudo gedit /etc/ltsp/dhcpd.conf

Mine attached below: The subnet, as long as the 1st three numbers match the rest of lan setup it will work.(192.168.2.0), rest of my lan is 192.168.2.x. Now notice the range is a different block than the hardware dhcp server uses. So all thin clients that connect will be assigned something 192.168.2.100-150 and all hardware connected pcs will be assigned 192.168.2.200-250 from the hardware router. So no conflicts. Then for the domain name server, set it to the hardware router ip. My hardware router is 192.168.2.2. Set option router to the same as hardware router of 192.168.2.2 Nothing in my dhcpd.conf file is pointing to the ltsp dhcp server. Nothing else had to be edited in the dhcpd.conf Next hurdle I had, after any change of the dhcpd.conf, ip's might have changed and you have to reconfig the ssh and the image. run these 2 commands.

sudo ltsp-update-sshkeys
then
sudo ltsp-upadte-image
then
sudo /etc/init.d/dhcp3-server restart

Then thin clients/lan boot pcs all can connect after that.

I have since installed again at work in virtual box, booted from another vbox client and booted from a separate lan pc. Then installed again at home on AMD 3200 Athlon, 1 gig mem. Booted from my main pc PhenomX4, no problems. Pc's must have lan boot available in the bios or net boot available on the network card(most consumer add on cards do not). But most motherboard lan connection do.

#
# Default LTSP dhcpd.conf config file.
#
authoritative;

[code].....

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Ubuntu Networking :: LTSP Server - Routing Multicast Communications?

May 16, 2010

I've just set up an LTSP server, with all its clients on a separate subnet to my main network - the main network is 192.168.1.x, and the LTSP clients are all 192.168.2.x. My LTSP server has 2 NICs, one on each network, and is merrily forwarding normal IP traffic from the clients to the rest of the network. I have a client/server application that has a server on one machine, and clients locate and attach to it using multicast protocols. The server is on the main network, and any other machines on the network can locate and talk to the server quite happily. The LTSP clients, however, cannot - I assume because the multicast communications aren't being forwarded by the LTSP server. How I can get this working?

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OpenSUSE Network :: What Is The Command For Surfing Internet Via ADSL

Aug 31, 2010

what is the command for surfing Internet via ADSL?

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OpenSUSE Network :: 11.3 NFS Server - Clients Cannot Connect

Jan 2, 2011

Upgraded two machines to 11.3 in the past 2 weeks. NFS is broken on both, in different ways. The problem I'll mention here is that the nfs server is running, but clients can't connect.

The server is running:
tinderbox:~ # /etc/init.d/nfsserver status
Checking for kernel based NFS server: idmapd running
mounted running
statd running
nfsd running

It has a valid export list:
tinderbox:~ # showmount -e
Export list for tinderbox:
/usr/local/share/common 192.168.1.0/24

The export exists:
tinderbox:~ # ls -lR /usr/local/share/
/usr/local/share/:
total 4
drwxrwxrwx 2 root root 4096 Jan 2 12:10 common

/usr/local/share/common:
total 0
-rw-r--r-- 1 root root 0 Jan 2 12:10 test.txt

But attempts to mount the export are unsuccessful, both from the local machine:
tinderbox:~ # mount.nfs 192.169.1.200:/usr/local/share/common /mnt -v
mount.nfs: timeout set for Sun Jan 2 12:14:19 2011
mount.nfs: trying text-based options 'addr=192.169.1.200,vers=4,clientaddr=192.168.1.200'
mount.nfs: mount(2): Connection timed out
mount.nfs: Connection timed out

...and from an OpenSUSE 11.0 machine.
moira:~ # mount.nfs 192.169.1.200:/usr/local/share/common /mnt/tmp/ -v
mount.nfs: timeout set for Sun Jan 2 11:52:17 2011
mount.nfs: text-based options: 'addr=192.169.1.200'
mount.nfs: Unable to connect to 192.169.1.200:111, errno 110 (Connection timed out)
mount.nfs: mount to NFS server 'rpcbind' failed: timed out, giving up

I've had NFS running on my local network for over a decade, and never had problems like this before.

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Server :: SAMBA To Share Network HDD With Permissions To Clients?

Jan 12, 2011

In my work I want to build up a Linux based network, where windows and linux clients are going to share a Thecus network drive.Each client will have specific permissions for accessing the samba shares. I have installed Ubuntu SRV 10.4 with gui and webmin.

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OpenSUSE Network :: Transfer Speed Between Samba Server And Win Clients

Mar 12, 2010

I have the problems with transfer speed between samba and Windows XP clients.

Samba server configuration:
Quad Core 6600 CPU.
4 Gb RAM
OpenSUSE 11.2 with kernel "2.6.31.12-0.1-desktop"
Samba - samba-3.5.1-1.1.i586
Test: 4 GB File copying. One file.

Transfer speed from Samba Server to Windows 7 and XP clients:
(Windows clients copy file from Server share -> to local drive)
From Server to Windows 7 client 1:
85-90 Mb/sec
From Server to Windows 7 client 2:
90-100 Mb/sec
From Server to XP1 client 3
75-100 Mb/sec

Transfer speed from Windows 7 and XP clients TO Samba Server:
(client copy file from local drive -> to server Share)
From Server to Windows 7 client 1:
12-20 Mb/sec
From Server to Windows 7 client 2:
30-35 Mb/sec
From Server to Windows XP client 1
20-27 Mb/sec

(Copying file from Windows local drive to Windows remote share)
From Window 7 client 1 TO Windows XP client 1
40-50 Mb/sec
From Window 7 client 2 TO Windows XP client 1
50-60 Mb/sec

Copying file from Windows 7 client 2 share -> TO Windows XP client 1 show me 100-120 Mb/sec speed permanent.
Copying file from Linux hosts to NFS server is stable 50-90
Mb/sec bidirectional.

This part of my smb.conf file
Code:
# version at /usr/share/doc/packages/samba/examples/smb.conf.SUSE if the
# samba-doc package is installed.
# Date: 2009-10-27
[global]
log level = 1
debug level = 0
max log size = 50 .....

I have very slow write speed when copying file from Windows clients to Samba Share. Samba speed is slower than Windows native clients connections ?

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Server :: Allow Wireless Clients Access To Network Based On Their MAC Address?

Jan 11, 2011

Using CentOS 5.5, FreeRADIUS 2.1.7.

Objective is simply to be able to allow wireless clients access to my network based on their MAC address (I have about 10 WAPs around the country which I need to be able to manage user access centrally). Not interested in LDAP or dishing out keys/certificates etc.

I have been trying to follow the guide here. Sounds like it's exactly what I need but I'm not sure about a few things.

1) For each of the conf files am I supposed to be replacing everything currently existing in the respective file with what is suggested?

2) "raddb/modules/file" does not exist, so I assume I should use "raddb/modules/files"?

3) If I uncomment the line:

Code:
#rewrite_calling_station_id
under the "raddb/sites-available/default authorize{}" section, the radiusd startup gives me the following error:
/etc/raddb/sites-enabled/default[69]: Failed to find module "rewrite_calling_station_id".

If anyone familiar with FreeRADIUS 2 could answer these queries I might be on the right path

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Networking :: OpenWRT Is Connected To Internet But Network Clients Can't?

Nov 20, 2010

got an asus wl500gp v2 and i just had to reflash it. Flashing went through fine, but while setting up the PPPoE connection I got stuck. Here is what the configuration looks like:ADSL Modem ---Ethernet--- Router ---Ethernet--- Laptop I set up OpenWRT to connect over PPPoE over the WAN port and the connection is established:

PAP authentication succeeded
peer from calling number XX:XX:XX:XX authorized
replacing old default route to br-lan

[code].....

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Networking :: Identify Route For Some Network Clients Without Netmask?

Jun 10, 2009

have two internet lines from two isp every one pluged to interface eth0 and eth1 and i have eth2 interface to internel network clients now i need to make some clients to use line 1 and other use line 2 i want make this without use netmask , just for selected IP.

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Networking :: Transparently And Securely Identifying Clients On A Network?

Dec 12, 2009

following on from [URL] I was having a little think about how to make this concept more secure. its easy enough to separate known and unknown clients out via MAC address. but that system is easier to break than it is to set up either, sniff out a mac address already connected to the system, and spoof that address.or, more simply, set a static IP on your wifi device, and avoid the redirection completely. so, is anyone aware of a relatively straight forward setup that would allow me to identify clients on my network without relying on MAC address, would more forcefully separate out known and unknown hosts (vlan??). As well as doing so without alerting them to the fact, and without requiring known hosts to do anything special, or install software. Or requiring any more hardware than I have already. (hardware = a debian box with 2 NIC's acting as a gateway between all internal network, and the billion router which handles the outside world not getting in, and a WAP attached to the internal side of the network. also somewhere I have a wifi card that I could attach to the server to replace the AP) I assume some sort of authentication mechanism is required, but I dont know much more past that.

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Ubuntu Servers :: Run A DHCP Server On Home Network To Enable PXE Booting For Ethernet Clients

Feb 27, 2010

I'm attempting to run a DHCP server on my home network to enable PXE booting for ethernet clients, but I'm having quite a few issues getting it all up and running. I'm not entirely sure what is wrong, but I keep encountering errors in syslog as follows:

Code:

Feb 27 02:26:46 servnerr-1 dhcpd: Wrote 0 leases to leases file.
Feb 27 02:26:46 servnerr-1 dhcpd:
Feb 27 02:26:46 servnerr-1 dhcpd: No subnet declaration for eth0 (192.168.1.3).

[code]....

Networking is not exactly my strong suit, but I would like to get this up and running if at all possible.

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Jan 17, 2011

Connection from MANY VNC clients to ONE Server?

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Networking :: DMZ - No Communication Between Server And 2 Clients

Oct 28, 2010

Code:
DMZ
Server--Router0--Modem0 ISP2--Modem3--Router3--Client3
/
Client1--Router1--Modem1--ISP1--WAN
/
Client2--Router2--Modem2 ISP3--Modem4--Router4--Client4

The Server in the above diagram can be accessed by Client3 and Client4 but not at all by Client1 or Client2. Router0 specifies the Server as a DMZ Host. I would be more specific but this is not my server. I don't use a DMZ, I forward ports when they are needed. In this case I represent ISP1 and the server belongs to a befuddled client. Client1 & Client2 can send packets to each other, no problem. Could the DMZ be breaking communication between the Server and Clients 1 & 2?

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Fedora Networking :: F10 As Server And Clients Are WinXP

Jun 21, 2009

I'm setting up a network for a school. The network has 11 client computers (windows xp) and a server (fedora 10) All I need to do is have a share for all the children to use. (this I did by adding each client to the workgroup specified on samba then I just map the drive). The issue turns out to be that I have over 300 users. The users don't always use the same computer therefore I need the users to be registered on all 11 clients. How can I do this? I have been searching and I've not gotten anywhere. How can I add the computers to a domain instead of a workgroup? What can I use?

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