ftp.ntua.gr:/debian/dists/stretch-backports-sloppy/non-free/by-hash/SHA256/?C=N&O=A 
Icon  Name                                                             Last modified      Size  
[DIR] Parent Directory                                                                      -   
[   ] 5547379c642f934a2b48fae8b36b413d852478e814331bfd8b3caa3fe1c7d4dc 24-May-2021 22:58  1.3K  
[   ] befdf524a451700b5cf41de1099c9b856d83b9087aabb520b403c013084fd509 27-Apr-2020 10:57  598   
[   ] f61f27bd17de546264aa58f40f3aafaac7021e0ef69c17f6b1b4cd7664a037ec 07-Jul-2019 16:53   20
Apache/2.2 Server at debian.noc.ntua.gr Port 80