ftp.ntua.gr:/ubuntu/dists/xenial-proposed/main/uefi/linux-caracalla-amd64/current/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] vmlinuz-4.4.0-2002-caracalla.efi.signed          19-May-2017 18:38  6.8M  
[   ] vmlinuz-4.4.0-2002-caracalla.efi                 19-May-2017 18:38  6.8M  
[   ] SHA256SUMS.gpg                                   19-May-2017 18:38  933   
[   ] SHA256SUMS                                       19-May-2017 18:38  437   
[   ] flavours                                         19-May-2017 18:38   33   
[   ] version                                          19-May-2017 18:38   13   
[DIR] control/                                         19-May-2017 18:38    -
Apache/2.2 Server at ftp.ntua.gr Port 80