ftp.ntua.gr:/debian/dists/stretch/main/installer-amd64/20170615/images/?C=N&O=D 
Icon  Name                                                 Last modified      Size  
[DIR] Parent Directory                                                          -   
[   ] udeb.list                                            15-Jun-2017 11:34  6.2K  
[DIR] netboot/                                             15-Jun-2017 23:55    -   
[DIR] hd-media/                                            15-Jun-2017 23:55    -   
[DIR] cdrom/                                               15-Jun-2017 23:55    -   
[   ] SHA256SUMS                                           15-Jun-2017 11:34   72K  
[   ] MD5SUMS                                              15-Jun-2017 11:34   54K  
[   ] MANIFEST.udebs                                       15-Jun-2017 11:34   46K  
[   ] MANIFEST                                             15-Jun-2017 11:34  1.7K
Apache/2.2 Server at debian.noc.ntua.gr Port 80