ftp.ntua.gr:/debian/dists/stretch-updates/main/debian-installer/binary-powerpc/by-hash/SHA256/?C=S&O=D 
Icon  Name                                                                        Last modified      Size  
[DIR] Parent Directory                                                                                 -   
[   ] df5c56197d838a107c0ac3618ac1dd9038de362690ccc7a8cb78783cafd9ed0f            18-Jun-2017 11:28   92   
[   ] 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