ftp.ntua.gr:/ubuntu/dists/focal-backports/main/debian-installer/binary-amd64/?C=D&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] Packages.gz                                      14-May-2021 09:23   40   
[   ] Packages.xz                                      14-May-2021 09:23   64   
[DIR] by-hash/                                         18-Oct-2019 13:51    -
Apache/2.2 Server at ftp.ntua.gr Port 80