ftp.ntua.gr:/debian/dists/stretch/main/installer-amd64/20170615/images/netboot/gtk/?C=S&O=D 
Icon  Name                                                                Last modified      Size  
[DIR] Parent Directory                                                                         -   
[   ] mini.iso                                                            15-Jun-2017 11:34   61M  
[   ] netboot.tar.gz                                                      15-Jun-2017 11:34   51M  
[   ] pxelinux.0                                                          15-Jun-2017 11:34   41K  
[DIR] pxelinux.cfg/                                                       15-Jun-2017 11:34    -   
[DIR] debian-installer/                                                   15-Jun-2017 11:34    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80