ftp.ntua.gr:/debian/dists/stretch-backports/main/debian-installer/binary-all/by-hash/MD5Sum/?C=N&O=A 
Icon  Name                                                                      Last modified      Size  
[DIR] Parent Directory                                                                               -   
[   ] 9b1ead53e4f1e87fadd1ea7260e85716                                          11-Nov-2018 03:59  369   
[   ] b29cf16e9efb066310633351f96e6ffb                                          11-Nov-2018 03:59  436   
[   ] c3c574620c1f8c820e22d4d19e68ce84                                          18-Jun-2017 11:28  175
Apache/2.2 Server at debian.noc.ntua.gr Port 80