ftp.ntua.gr:/debian/dists/stretch-backports/main/debian-installer/binary-arm64/by-hash/SHA256/?C=N&O=A 
Icon  Name                                                                        Last modified      Size  
[DIR] Parent Directory                                                                                 -   
[   ] 173c78b3134bad3b7868e4039ab5a695d3a9b4ec5444e115e32ad81d78113ddf            18-Jun-2017 11:28  177   
[   ] 78b686db4b3baed0e686fb03e91be8b88705b5b32cf48d2d1afbfe8a324a59cc            16-Oct-2020 17:00  8.7K  
[   ] d741649b6ae557214f5b4adb70e3faeb2238ae0f1f2de2427b930779d24e68d1            16-Oct-2020 17:00   10K
Apache/2.2 Server at debian.noc.ntua.gr Port 80