ftp.ntua.gr:/debian/dists/stretch-backports/main/debian-installer/binary-armhf/?C=M&O=A 
Icon  Name                                                   Last modified      Size  
[DIR] Parent Directory                                                            -   
[DIR] by-hash/                                               17-Jun-2017 14:56    -   
[   ] Release                                                18-Jun-2017 11:28  177   
[   ] Packages.gz                                            16-Oct-2020 17:00   10K  
[   ] Packages.xz                                            16-Oct-2020 17:00  9.0K
Apache/2.2 Server at ftp.grnet.gr Port 80