ftp.ntua.gr:/debian/dists/stretch-backports/non-free/binary-amd64/by-hash/MD5Sum/?C=N&O=A 
Icon  Name                                                           Last modified      Size  
[DIR] Parent Directory                                                                    -   
[   ] f173689f4a50d2e9f196435e7a2aed87                               18-Jun-2017 11:28  181   
[   ] f1ac64d179e4dff61e0280af291a1a01                               13-Jul-2020 16:57   32K  
[   ] f59315391e5ca9afafb3f44692c4b960                               13-Jul-2020 16:57   39K
Apache/2.2 Server at debian.noc.ntua.gr Port 80