ftp.ntua.gr:/debian/dists/stable/main/installer-amd64/20210731/images/cdrom/?C=N&O=A 
Icon  Name                                                       Last modified      Size  
[DIR] Parent Directory                                                                -   
[   ] debian-cd_info.tar.gz                                      31-Jul-2021 07:20  2.2M  
[DIR] gtk/                                                       31-Jul-2021 07:20    -   
[   ] initrd.gz                                                  31-Jul-2021 07:20   17M  
[   ] vmlinuz                                                    31-Jul-2021 07:20  6.5M  
[DIR] xen/                                                       31-Jul-2021 07:20    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80