ftp.ntua.gr:/debian/dists/stretch-backports/non-free/binary-all/?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  179   
[   ] Packages.xz                               16-Sep-2019 17:05  6.4K  
[   ] Packages.gz                               28-Mar-2020 22:57  6.9K
Apache/2.2 Server at debian.noc.ntua.gr Port 80