ftp.ntua.gr:/debian/dists/stretch-backports/non-free/debian-installer/binary-armel/by-hash/SHA256/?C=S&O=D 
Icon  Name                                                                            Last modified      Size  
[DIR] Parent Directory                                                                                     -   
[   ] 705e50448e74656b891962f5cd249c51c17910436f3bd855ca793eaf9e83455d                18-Jun-2017 11:28  181   
[   ] 0040f94d11d0039505328a90b2ff48968db873e9e7967307631bf40ef5679275                18-Jun-2017 11:11   32   
[   ] f61f27bd17de546264aa58f40f3aafaac7021e0ef69c17f6b1b4cd7664a037ec                19-Jun-2017 23:59   20
Apache/2.2 Server at debian.noc.ntua.gr Port 80