ftp.ntua.gr:/mirror/ubuntu/dists/devel/main/uefi/grub2-amd64/current/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] grubx64.efi.signed                               23-Apr-2021 14:36  1.6M  
[   ] grubx64.efi                                      23-Apr-2021 14:36  1.6M  
[   ] grubnetx64.efi.signed                            23-Apr-2021 14:36  1.4M  
[   ] grubnetx64.efi                                   23-Apr-2021 14:36  1.4M  
[   ] gcdx64.efi.signed                                23-Apr-2021 14:36  1.4M  
[   ] gcdx64.efi                                       23-Apr-2021 14:36  1.4M  
[   ] SHA256SUMS.gpg                                   23-Apr-2021 14:36  819   
[   ] SHA256SUMS                                       23-Apr-2021 14:36  650   
[   ] version                                          23-Apr-2021 14:36   15   
[DIR] control/                                         23-Apr-2021 14:36    -
Apache/2.2 Server at ftp.grnet.gr Port 80