What alternatives exist to using TFTP in setup

view story

http://serverfault.com – I'm looking for a way to set up clients in a network and have used TFTP so far. Messing around with the server I was able to do a path traversal with something similar like GET asdf/../../../../windows/win.ini. For this and other security considerations I'd like to to switch to something more secure. As far as I know, setting up clients with PXE over the network always uses DHCP and TFTP to download the images. I've seen the possibility to run TFTP service in a chrooted environment or filter incoming traffic on port 69 to make it more secure. I'm not too fond of this, because I'm think there (HowTos)