ftp.ntua.gr:/debian/dists/unstable/main/installer-armhf/20190623/images/netboot/?C=N&O=D 
Icon  Name                                                         Last modified      Size  
[DIR] Parent Directory                                                                  -   
[   ] vmlinuz                                                      23-Jun-2019 22:53  4.0M  
[   ] tftpboot.scr                                                 23-Jun-2019 22:53  796   
[   ] netboot.tar.gz                                               23-Jun-2019 22:53   29M  
[   ] mini.iso                                                     23-Jun-2019 22:53   28M  
[   ] initrd.gz                                                    23-Jun-2019 22:53   22M  
[DIR] gtk/                                                         23-Jun-2019 22:53    -   
[   ] boot.scr                                                     23-Jun-2019 22:53  1.5K  
[DIR] SD-card-images/                                              23-Jun-2019 22:53    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80