Boot over network

[David King]

>> I would like to have a FreeBSD server which would supply a few
>> workstations connected over the network a boot image

NetBSD has some very detailed instructions on netbooting at <http:// 
www.netbsd.org/Documentation/network/netboot/>. It is a little  
specific that the booted machines boot NetBSD, but not the the server  
run NetBSD, and in fact it includes instructions on setting on DHCP/ 
BOOTP/NFS on several architecture/operating system combinations. If  
you have an Ubuntu boot image handy you can probably follow most of  
those instructions and just substitute your image's filename when  
appropriate.