ftp.ntua.gr:/debian/dists/unstable/main/installer-amd64/20190623/images/netboot/debian-installer/amd64/?C=M&O=D 
Icon  Name                                                                                  Last modified      Size  
[DIR] Parent Directory                                                                                           -   
[DIR] pxelinux.cfg/                                                                         23-Jun-2019 22:53    -   
[   ] pxelinux.0                                                                            23-Jun-2019 22:53   41K  
[   ] linux                                                                                 23-Jun-2019 22:53  5.0M  
[   ] initrd.gz                                                                             23-Jun-2019 22:53   29M  
[   ] grubx64.efi                                                                           23-Jun-2019 22:53  1.2M  
[DIR] grub/                                                                                 23-Jun-2019 22:53    -   
[   ] bootnetx64.efi                                                                        23-Jun-2019 22:53  1.3M  
[DIR] boot-screens/                                                                         23-Jun-2019 22:53    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80