ftp.ntua.gr:/ubuntu/dists/impish/main/signed/shim-amd64/current/?C=N&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] SHA256SUMS                                       30-Apr-2021 23:53   80   
[   ] SHA256SUMS.gpg                                   30-Apr-2021 23:53  819   
[   ] signed.tar.gz                                    30-Apr-2021 23:53  1.5M
Apache/2.2 Server at ftp.ntua.gr Port 80