ftp.ntua.gr:/ubuntu/dists/groovy-security/restricted/cnf/by-hash/?C=S&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[DIR] SHA256/                                          25-Apr-2021 00:13    -
Apache/2.2 Server at ftp.ntua.gr Port 80