"There are several significant changes in LTSP 5 which make the system much more usable. You will get enhanced security as now the GUI is exported using ssh -X and not the old XDMCP. SSH offers encryption of course which is actually faster and safer. The remote connection is made with LDM a python application that connects using SSH and not the old KDM or GDM. NFS has been dropped and replaced with NBD. NBD or Network Block Device is a network block device which emulates a block device like a hard drive over the network. This allows you to either use this space as swap or use it as network diskspace."
