ftp.ntua.gr:/ubuntu/dists/focal-updates/main/uefi/grub2-amd64/2.04-1ubuntu26.8/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] grubx64.efi.signed                               25-Jan-2021 16:33  1.6M  
[   ] grubx64.efi                                      25-Jan-2021 16:33  1.6M  
[   ] grubnetx64.efi.signed                            25-Jan-2021 16:33  1.4M  
[   ] grubnetx64.efi                                   25-Jan-2021 16:33  1.4M  
[   ] gcdx64.efi.signed                                25-Jan-2021 16:33  1.4M  
[   ] gcdx64.efi                                       25-Jan-2021 16:33  1.4M  
[   ] SHA256SUMS.gpg                                   25-Jan-2021 16:33  1.5K  
[   ] SHA256SUMS                                       25-Jan-2021 16:33  650   
[   ] version                                          25-Jan-2021 16:33   17   
[DIR] control/                                         25-Jan-2021 16:33    -
Apache/2.2 Server at ftp.ntua.gr Port 80