ftp.ntua.gr:/ubuntu/dists/focal-security/universe/debian-installer/binary-amd64/by-hash/SHA256/?C=N&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] 8b17296664b30492b2382731fe9e331b610624b8d7cc4..> 13-Apr-2021 18:15  3.4K  
[   ] 0e1e0d3887d42e4b404fe35ee6e7485e3b2d50b3565f4..> 13-Apr-2021 18:15  3.3K
Apache/2.2 Server at ftp.ntua.gr Port 80