ftp.ntua.gr:/debian/dists/stable/main/installer-amd64/20210731/images/netboot/xen/?C=N&O=D 
Icon  Name                                                               Last modified      Size  
[DIR] Parent Directory                                                                        -   
[   ] vmlinuz                                                            31-Jul-2021 07:20  6.5M  
[   ] initrd.gz                                                          31-Jul-2021 07:20   55M  
[TXT] debian.cfg                                                         31-Jul-2021 07:20  6.1K
Apache/2.2 Server at ftp.grnet.gr Port 80