ftp.ntua.gr:/debian/dists/stretch-backports/non-free/binary-all/by-hash/MD5Sum/?C=N&O=A 
Icon  Name                                                         Last modified      Size  
[DIR] Parent Directory                                                                  -   
[   ] 117b5a24f67bf7ca44550db96bc03f58                             16-Sep-2019 17:05  6.4K  
[   ] d8a528686ccb58ec023d5c830247da5b                             18-Jun-2017 11:28  179   
[   ] f0576e228b49fc146f1e7da06e519dc3                             28-Mar-2020 22:57  6.9K
Apache/2.2 Server at debian.noc.ntua.gr Port 80