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?
View 1 RepliesMy 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.
In short we are booting Centos 5.4 over PXE to a bunch of diskless clients. Once they are booted - we can login (as local root account) and RDP to windows machines using rdesktop as we require.
The next step of the project is to get user authentication to the Windows Domain controller working for the PXE image.
To do so - we continued with our physical install of Centos 5.4 (used to create the pxe image with rsync as per the wiki page for diskless clients) by following through this page. AD auth works perfect on this box (it has a local HDD install of centos obviously).
Once we rsync'd the changes over to the pxeboot location - and rebooted one of the diskless pxe clients - we get issues.
The issue is that winbind seems to start - however the file "/etc/samba/secrets.tdb" cant be read. We tried removing this file that the PXE clients use and recreating it using
touch /etc/samba/secrets.tdb
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?
View 3 Replies View RelatedI'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?
View 1 Replies View RelatedI'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.
I want to make my computer invisible or hidden to the other computers connected to the same wireless network. In other words, I want to turn off network visibility or network mapping. I think this amounts to the ability to turn on and off the Windows Link-Layer Topology Discovery (LLTD) Responder. [URL]... On windows, I believe this would be comparable to setting the wireless network as Public instead of Home. I like to share files using Ubuntu when I am connected to my Home router, but I don't want to be discoverable or visible to clients on a public wifi network.
I have already created a shared folder on my desktop which installed some sort of networking components to interact with Windows, but I don't want the public wifi network to see this folder, or my computer name at all. I want to be invisible to other clients on the same network. Right now I am visible and can see other clients connected to this public wifi router.
(In case some ask: I do not want to disable SSID broadcasting on the router as it is a public wifi router that I do not have access to.) Can anyone explain how to do this (preferably with a GUI method so I can reverse the steps when I connect to my Home network)?
I have followed everything in the fedora 14 documenation about setting up a diskless pxe boot and I can get past initialization. The kernel and initrd load fine from the tftp server. The kernel starts, then hangs after probing USB devices. The messages show that initrd does not have support for nfsroot. I think I need to better understand how to add this in when I run dracut to build the initramfs image.
View 1 Replies View RelatedI'm trying to set-up a diskless environment on my home network, based on a F12 server and one FC14 client and I have a problem that I think is related to NFS, but googling around I cannot find any solution.
Basicly the client boots correctly, gdm fires up showing the login window, but the system doesn't let me in, if I switch to console (CTRL+ALT+F2) I cannot login with both standard and super user getting a "permission denied" error.
I tryed to mount the exported fs on another computer and ls -l on the mounted dir shows both user and group set to nobody.
If i mount the exported dir on server side (i.e. mount -t nfs localhost:/...) permissions user and group shows correctly
I'm attempting to set up a server for performing diskless boots here. I'm using Gentoo 2008, and have followed the instructions here:
[URL]
I've gotten to the end of the basic DHCP setup, and I can not get the server to issue addresses. I've confirmed dhcpd loads up OK, and is running in top.
Here's the contents of /etc/dhcp/dhcpd:
Code:
# Disable dynamic DNS
ddns-update-style none;
# Assume one default gateway for IP traffic will do
[Code]....
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
View 1 Replies View Relatedplz 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
View 2 Replies View RelatedI know WEP is frowned upon and enverone should be using WPA. And my hostapd AP is working with WPA clients. However, I would like to alow some older clients that can only "talk" WEP to connect. All my attempts so far have failed! Can anyone point me in the right direction? The hostapd.conf file comments suggests that hostapd can support WEP. There are no contraindications or flags that I can find in the defconfig file that suggest that a WEP module needs to be complied-in to the final make.
View 6 Replies View RelatedI have a script which runs a few other scripts (in subfolders of the first script) in order to mount some unix/linux shares) Anyway, when I run the file from rc.local and try to pipe the output into a file the file is empty and the shares are not mounted. however when I run the file it mounts everything.... Also, the script doesn't work on my wireless clients...
View 11 Replies View RelatedUsing 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
I have a mythfrontend box that boots diskless - everything works fine. However, when attempting to upgrade the kernel - grub complains about not finding a device, and the upgrade fails.How do I fix this? Other packages upgrade with no problem.
Code:
The following partially installed packages will be configured:
grub-pc linux-generic linux-image-2.6.32-23-generic linux-image-2.6.32-24-generic linux-image-generic
[code]....
I made a diskless image against Fedora15, during the boot I found it displayed the following error message and went into emergency mode.
The error message:
Starting Relabel all filesystems, if necessary ^[[1;31maborted^[[0m because a dependency failed.^M
[ 107.607155] systemd[1]: Job fedora-autorelabel.service/start failed with result 'dependency'.^M
Starting Mark the need to relabel after reboot ^[[1;31maborted^[[0m because a dependency failed.^M
[code]...
An interesting challenge involving diskless booting a PC
View 1 Replies View RelatedI currently have a debian lenny high performance cluster running seamlessly using dhcp and tftpd-hpa. All nodes are completely diskless, and i would like to keep it that way. I now would like to have a client boot over local into a full KDE desktop.
Here's the cache.
1. I would like the client to also be a node. I would like it to handle processing as the other nodes do, but this one with a full desktop, with ALL data and privileges accessible.
2. The client will have its own workstation graphics. It will need to have that driver loaded without slowing the system.
3. Client will need to be able to use its own usb, bd-rom, dvd, audio, etc. even though it will be booting into the HPC.
4. Wireless. I cannot run 70 ft of lan across an apartment. not happening.
The idea is a media center applicable "powerhouse" with high-end power and graphics for easy media editing, 3d creation, and gaming. Will also be used for webcache over all local, file sharing, and other server applications.
HPC specs:
-headnode: hp compaq p4-ht 3.2 ghz, 4x500gb, 4gb mem, gigabit ethernet, wireless-N
-nodes: 4x p4-ht 2.2 ghz, 2gb mem, no-name brand slim desktops; 2x panasonic toughbooks p4-mobile 1.8 ghz, 1.5gb mem; 3x gateway p3 unknown specs; and 1 hp 530 notebook 1.6ghz core2 duo, 1.5gb mem
-client: hp compaq core2 duo 2.13 ghz, 4gb mem, wireless n, bd-rom, 2x dvd-rom, usb 3.0 card, bluetooth, 1gb AGP nvidia geforce 6800 dual-dvi, no hd.
I need to know how to set up this PXE.
I am currently working on a Diskless Fedora10 based PXE image that should auto login and then launch the ICA client without launching the desktop (so normal autostart will not cut it)I have got the image up and running, the clients boot correctly, autologin etc, but still launch KDE, and I was hoping replace the desktop with the ICA Client.
View 1 Replies View Relatedhow to to setup a PXE boot environment. The server contains a LUbuntu 10.10-installation the client is Ubuntu 10.10 Server (I didn't mix up those two...) So, everything is going fine; the client gets an ip-adres, and boots over PXE. The login-prompt is shown. Problem: I can't login. It seems my users are deleted (better not copied). Of course the system (client) works fine when I boot the system from it's harddrive. The only thing I can guess, there going something wrong with:
[Code]....
My problem is that I can't setup a diskless environment with CentOS 5.4 (server) and CentOS 3.9 (hosts). On the host, I've recompiled the CentOS 3.9 kernel, with these mods:
- added kernel level IP autoconfiguration;
- added NFS file system support;
- added Root file system on NFS;
- added e1000 driver (the host has a gigabit network card);
Then, I have followed the guide at this link: [URL]
But in my dhcpd.conf I'he put other parameters:
ddns-update-style interim;
allow bootp;
allow booting;
subnet 192.168.195.0 netmask 255.255.255.0 {
range192.168.195.70 192.168.195.90;
option routers192.168.195.254;
option subnet-mask255.255.255.0;
option domain-name"lnf.infn.it";
option domain-name-servers192.168.195.254;
option time-offset-18000; # Eastern Standard Time
default-lease-time21600;
max-lease-time43200;
filename"linux-install/pxelinux.0";
next-server192.168.195.254;
}
host dante79 {
option host-name"dante79";
hardware ethernet00:20:38:01:C3:7C;
fixed-address192.168.195.79;
}
I have a PXE server which installed DHCP TFTP AND NFS service. and set them up followed by [URL].
The boot process hanged here:
ipconfig: eth0: SIOCGIFUNDEX: No such device
ipconfig: no devices to configure
[-n eho]
. /tmp/net-eth0.conf
/init: line 3: can't open /tmp/net-eth0.conf
...
What I did try to work around is,
1. Set portfast to all the ports connected the PXE server and client.
2. Edit pxelinux.cfg/default, try different setting in "ip=" (I did not find any menu in the internet which explain to to configure this file).
I need to set up a VPN between 2 clients but don't have the foggiest idea where to start. I have searched the internet in vain, I have yet to discover the steps I need to take.
View 3 Replies View RelatedConnection from MANY VNC clients to ONE Server?
View 3 Replies View RelatedOk, here goes, I have a rdp server sitting at a remote store which is behind a router I do not control.
I might be able to get the phone company to add routing to it but at the moment I'd like to do this with ssh and reverse port routing, because I might need this for other ports later and I never know if the phone company wont break other routings already in place or just screw up the entire thing .
I am able to have a linux box at the site ssh into a server located where I'm at and reverse port forward port 3389 to that server. I can also then ssh into that server from my linux box and port forward 3389 to my box, under another port since my 3389 is already in use. Finally I can use rdesktop to rdp on the my local box which bounces it through the server and back to the linux box which forwards it to the rdp server (A Windows 2008 server to be exact). This is all well and good and works reasonably fast, but, I need to be able to have users on windows boxes at my site do this without all of the rigmarole. I need to, I guess, redirect a normal open port, or create one, on the server where I am so that it connects internally to the reverse forwarded port or open the internal port to the outside. So I guess I need to make it a 'gateway' for that one port, this way all I have to do is point the rdp clients at the main server and port to have it eventually connect to the rdp server in the remote store.
how to go about doing it. I guess I need an iptables entry forwarding the port but I'm not sure what is should be.
The other option is opening up the port 3389 to the outside but I'm not sure how to do that either. Right now I have no iptables entries at all but even if I turn off iptables completely port 3389 is not available if I try to use it from another pc on the network but I can rdp from the server itself using the 3389 port so I know it's working internally.
I have a client in Pittsburgh that has a Mac server and a Linux (RHEL) server on a LAN. They have a Netgear FVS 318v3 router on which they had a VPN running. They could do this because they had the router configured for IP-SEC and they only had Mac laptops as clients. I'm told Mac laptops can be configured to connect to IP-SEC VPNs, but Linux (I have Ubuntu) clients cannot.
I'm told that we need an PPTP VPN, and that the Netgear can not act as an endpoint, but can pass PPTP traffic to one of the servers if we set them up as a PPTP server.
We hired two different network consultants to set up the VPN, but neither one is able to set up a VPN to allow both the Mac and Linux laptops to connect.
Why is this so difficult? Lots of companies have VPNs that allow any client to connect.
Would it be better for us to purchase a different router that can act as a PPTP endpoint?
Do I want the router to act as a PPTP endpoint, or would it be better for me to use the Netgear and set up a PPTP service on one of the servers? Or, is there some better solution?
I'll state the issue and then give whatever extra details are needed. I'm running Ubuntu 10.xThe Linux box is connected to a router via ethernet. That Linksys router is bridged to an AT&T router.The bridging is working fine. The AT&T router's page shows the IP of the Linux box and lists it as a device. The Linksys page shows no errors with packet transmission and receipt. I can ping the Linux box from any client on the AT&T router, and can ping the AT&T clients from the Linux boxI had set the IP of the Linux box to192.168.1.201 while configuring that router, as I had set that router to 192.168.1.200 and it just seemed orderly.The network preferences show eth0 being set to auto dhcp, but the IP is still set to .201 so I don't know that it actually released or renewed.
View 5 Replies View RelatedWere seeing very strange problems related to Alteon and linux clients. We got an Alteon Application Switch 2208(Version 22.0.2) balancing traffic for http, https and ldap. Everything works fine when using windows(iexplorer) or RHEL 5.3 clients, as wget, firefox, or direct telnel to por 80 or 389. But we got some linux machines, a CENTOS 5.5 for example, that can�t make it to work. No special configuration, no different vlans or subnets. It just stay waiting for the response:
[Code]...
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?