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