ftp.ntua.gr:/debian/dists/stretch-backports/main/debian-installer/binary-all/by-hash/ 
Icon  Name                                                              Last modified      Size  
[DIR] Parent Directory                                                                       -   
[DIR] MD5Sum/                                                           12-Nov-2018 16:38    -   
[DIR] SHA256/                                                           12-Nov-2018 16:38    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80