Steve,

Thank you very much for getting back to me. This issue has become very
frustrating and a truly appreciate your help. I wanted to make sure that the
Windows 2003 SBS acting as the DHCP wasn't part of the problem so I removed
it from the equation. I am now running the DHCP service on the LTSP server
and only serve static addresses to the subnet that I am trying to remote
boot from (192.168.50.X). This is working fine. The remote client gets the
IP address 192.168.50.35 and then requests the file /ltsp/i386/pxelinux.0
from the TFTP server. The following is shown in the syslog when this
happens.

Jun 8 00:17:20 debian in.tftpd[5411]: RRQ from 192.168.50.35 filename
/ltsp/i386/pxelinux.0

The remote client just hangs here and nothing is ever transferred. I checked
the hosts.allow and hosts.deny and nothing was in there. I added the
following to hosts.allow:

ALL: 192.168.50.0/255.255.255.0

But this doesn't seem to help. Also, there is nothing in the iptables
either. I am completely stumped now. Is there a way that I can see why
tftpd-hpa is not able to send the file? Could this be a netmask issue within
dhcpd3.conf? Does the default install of Debian have a firewall that I don't
know of? Any more help you can give me would be great.

Regards,
Aaron J. Wood




Regards,
Aaron J. Wood
Sun Tire Services, Inc
904-693-0990

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Steve
Cayford
Sent: Saturday, June 07, 2008 1:49 PM
To: ltsp-discuss@lists.sourceforge.net
Subject: Re: [Ltsp-discuss] PXE Boot over multiple Subnets using W2003 SBS
asDHCP Server

Aaron,

To my knowledge, tftp does not reference the exports file. It's more likely
that packets are being blocked by a firewall or by tcpwrappers.

I would look in the logs for dropped packet notices or any information from
tftp -- you can boost the logging verbosity with "-v" in
/etc/default/tftp-hpa (on my Ubuntu machine anyway). Look at the manual page
for tftpd ("man tftpd") for more options; it's a very simple daemon.

Try "iptables -L -n -v" to see if you're dropping packets to port 69 from
anywhere (tftp uses the UDP protocol).

Look in /etc/hosts.allow and /etc/hosts.deny to see if you have any
tcpwrapper rules affecting your tftp daemon.

Hope one of these ideas helps.

-Steve

Aaron J. Wood wrote:
> Steve,
> 
> It does not appear that the TFTP server is responding. The wireshark 
> trace only shows activity from the remote client to the TFTP server on
port 69.
> Could this have something to do with my exports file? I am learning 
> Linux and not sure about a lot of these things. If not, where could I 
> look for something blocking this request from other subnets?
> 
> 
> Regards,
> Aaron J. Wood
> Sun Tire Services, Inc
> 904-693-0990
> 
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Steve 
> Cayford
> Sent: Friday, June 06, 2008 6:16 PM
> To: ltsp-discuss@lists.sourceforge.net
> Subject: Re: [Ltsp-discuss] PXE Boot over multiple Subnets using W2003 
> SBS asDHCP Server
> 
> Is the tftp server responding at all? Your description sounds like the 
> connection is getting blocked on the server before it reaches the tftp 
> daemon.
> 
> -Steve
> 
> Aaron J. Wood wrote:
>> Update:
>>
>> I installed wireshark on the LTSP server and the remote booting 
>> client is in fact getting to port 69 and asking for the pxelinux.0 
>> file. It takes about
>> 15 minutes before the TFTP....errors out and the boot stops. I will 
>> attach a log from wireshark once it is finished recording the boot 
>> process. Does this mean that the file is simply too large to transmit?
>> Any thoughts appreciated.
>>
> 
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Checked by AVG. 
Version: 8.0.100 / Virus Database: 270.0.0/1489 - Release Date: 6/7/2008
11:17 AM


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