ftp.ntua.gr:/debian/dists/stretch/main/installer-amd64/20170615/images/netboot/debian-installer/amd64/grub/ 
Icon  Name                                                                                       Last modified      Size  
[DIR] Parent Directory                                                                                                -   
[   ] font.pf2                                                                                   15-Jun-2017 11:34  4.9K  
[   ] grub.cfg                                                                                   15-Jun-2017 11:34  7.7K  
[DIR] x86_64-efi/                                                                                15-Jun-2017 23:55    -
Apache/2.2 Server at debian.noc.ntua.gr Port 80