ftp.ntua.gr:/mirror/ubuntu/dists/focal-security/main/signed/linux-amd64/5.4.0-72.80/?C=M&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] signed.tar.gz                                    15-Apr-2021 23:34   37M  
[   ] SHA256SUMS.gpg                                   15-Apr-2021 23:34  1.5K  
[   ] SHA256SUMS                                       15-Apr-2021 23:34   80
Apache/2.2 Server at ftp.grnet.gr Port 80