ftp.ntua.gr:/debian/dists/stretch/main/installer-amd64/20170615+deb9u9/images/hd-media/?C=S&O=D 
Icon  Name                                                               Last modified      Size  
[DIR] Parent Directory                                                                        -   
[   ] boot.img.gz                                                        12-Jul-2020 20:49   58M  
[   ] initrd.gz                                                          12-Jul-2020 20:49   15M  
[   ] vmlinuz                                                            12-Jul-2020 20:49  4.1M  
[DIR] gtk/                                                               12-Jul-2020 20:49    -
Apache/2.2 Server at ftp.grnet.gr Port 80