ftp.ntua.gr:/debian/dists/sid/main/installer-amd64/20190410/images/netboot/debian-installer/amd64/?C=S&O=D 
Icon  Name                                                                             Last modified      Size  
[DIR] Parent Directory                                                                                      -   
[   ] initrd.gz                                                                        10-Apr-2019 21:55   29M  
[   ] linux                                                                            10-Apr-2019 21:55  5.0M  
[   ] grubx64.efi                                                                      10-Apr-2019 21:55  1.2M  
[   ] bootnetx64.efi                                                                   10-Apr-2019 21:55  1.1M  
[   ] pxelinux.0                                                                       10-Apr-2019 21:55   41K  
[DIR] pxelinux.cfg/                                                                    10-Apr-2019 21:55    -   
[DIR] grub/                                                                            10-Apr-2019 21:55    -   
[DIR] boot-screens/                                                                    10-Apr-2019 21:55    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80