ftp.ntua.gr:/ubuntu/dists/impish-proposed/main/signed/shim-amd64/15.4-0ubuntu2/?C=N&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] signed.tar.gz                                    30-Apr-2021 17:48  1.5M  
[   ] SHA256SUMS.gpg                                   30-Apr-2021 17:48  819   
[   ] SHA256SUMS                                       30-Apr-2021 17:48   80
Apache/2.2 Server at ftp.ntua.gr Port 80