ftp.ntua.gr:/ubuntu/dists/focal-updates/main/installer-amd64/current/legacy-images/hd-media/?C=N&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] vmlinuz                                          01-Feb-2021 10:23   11M  
[   ] initrd.gz                                        01-Feb-2021 10:23   20M  
[   ] boot.img.gz                                      01-Feb-2021 10:23   30M
Apache/2.2 Server at ftp.ntua.gr Port 80