[K12OSN] ltsp, subnets, dhcpd.conf

Rob Owens rob.owens at biochemfluidics.com
Tue May 20 18:34:10 UTC 2008

If you want to have thin clients only on subnet 3, then it sounds like 
you should use a single-nic setup.  This means, though, that the K12LTSP 
server will be acting as the DHCP server for the entire subnet.  Make 
sure that is ok, and make sure there is no other DHCP server on that 

If you set it up like this, then the K12LTSP server can be located 
anywhere on your subnet and it will work.  Just make sure it's giving 
out the correct IP addresses for your subnet.  Also make sure that you 
define the proper gateway machine in dhcpd.conf.  It will not be the 
K12LTSP server.  It will be the IP address of the Sonicwall firewall. 
Now that I think of it, you'll also need to set the DNS server in 
dhcpd.conf too.


Will Hatch wrote:
> Hi All,
> I'll do my best to explain my issue.  I've successfully installed k12ltsp in the past.  That was when I was at a small school, with my cable modem sitting beside my desk.  I didn't have to worry about subnets, or changing the dhcpd.conf file.  Here is my current situation:
> This is a three-building school district.  The internet is piped into the high school, where we have a Sonicwall firewall set up.  The high school used subnets 0,1, and 2.  My building uses 3.  The central office uses 4 and 5.  
> I can't find any documentation that says what I have to do exactly, in a case like mine.  All the computers in my building use a subnet of .3.  I have Edubuntu with ltsp installed, I have a universal boot floppy written for clients.  But I know I have to do something to configuration files to get clients to boot.  
> Thanks
> Will
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