ftp.ntua.gr:/debian/dists/stretch/main/installer-arm64/20170615+deb9u9/images/netboot/debian-installer/arm64/grub/ 
Icon  Name                                                                                              Last modified      Size  
[DIR] Parent Directory                                                                                                       -   
[DIR] arm64-efi/                                                                                        12-Jul-2020 20:49    -   
[   ] font.pf2                                                                                          12-Jun-2019 14:20  4.9K  
[   ] grub.cfg                                                                                          12-Jul-2020 20:49  7.5K
Apache/2.2 Server at ftp.grnet.gr Port 80