ftp.ntua.gr:/ubuntu/dists/impish/main/signed/shim-amd64/15.4-0ubuntu1/?C=M&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] signed.tar.gz                                    23-Apr-2021 14:36  1.5M  
[   ] SHA256SUMS.gpg                                   23-Apr-2021 14:36  819   
[   ] SHA256SUMS                                       23-Apr-2021 14:36   80
Apache/2.2 Server at ftp.ntua.gr Port 80