ftp.ntua.gr:/debian/dists/stretch/main/installer-amd64/20170615/images/netboot/debian-installer/amd64/?C=N&O=D 
Icon  Name                                                                                 Last modified      Size  
[DIR] Parent Directory                                                                                          -   
[DIR] pxelinux.cfg/                                                                        15-Jun-2017 11:34    -   
[   ] pxelinux.0                                                                           15-Jun-2017 11:34   41K  
[   ] linux                                                                                15-Jun-2017 11:34  4.0M  
[   ] initrd.gz                                                                            15-Jun-2017 11:34   23M  
[DIR] grub/                                                                                16-Jun-2017 23:57    -   
[   ] bootnetx64.efi                                                                       15-Jun-2017 11:34  436K  
[DIR] boot-screens/                                                                        15-Jun-2017 23:55    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80