ftp.ntua.gr:/debian/dists/stretch/main/installer-armhf/20170615+deb9u9/images/netboot/gtk/?C=N&O=D 
Icon  Name                                                                       Last modified      Size  
[DIR] Parent Directory                                                                                -   
[   ] vmlinuz                                                                    12-Jul-2020 20:49  3.6M  
[   ] initrd.gz                                                                  12-Jul-2020 20:49   36M
Apache/2.2 Server at debian.noc.ntua.gr Port 80