ftp.ntua.gr:/debian/dists/stretch/non-free/debian-installer/binary-i386/by-hash/SHA256/?C=N&O=A 
Icon  Name                                                                 Last modified      Size  
[DIR] Parent Directory                                                                          -   
[   ] 0040f94d11d0039505328a90b2ff48968db873e9e7967307631bf40ef5679275     18-Jun-2017 11:11   32   
[   ] 4905a1f86eb8f19247085e85abbb7027dd12522eb2dc7eee9c34203d873995d8     14-Aug-2021 10:42  125   
[   ] f61f27bd17de546264aa58f40f3aafaac7021e0ef69c17f6b1b4cd7664a037ec     19-Jun-2017 23:59   20
Apache/2.2 Server at debian.noc.ntua.gr Port 80