ftp.ntua.gr:/ubuntu/dists/groovy-security/restricted/source/by-hash/SHA256/?C=N&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] 2024fa1f9c5296ccfdbc7edc3d78ccb2995db1b5cf9fa..> 11-May-2021 23:27   11K  
[   ] 999fab6bd03ba524573dfc5c36829d4a4ea6f55ec0d27..> 24-Apr-2020 16:54  112   
[   ] cd3c048050a83e4f9412a5c8aa37cd9c1e8c365bb04bf..> 11-May-2021 23:27   12K
Apache/2.2 Server at ftp.ntua.gr Port 80