ftp.ntua.gr:/mirror/ubuntu/dists/groovy/main/signed/linux-kvm-amd64/current/?C=M&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] signed.tar.gz                                    19-Oct-2020 22:03   13M  
[   ] SHA256SUMS.gpg                                   19-Oct-2020 22:03  819   
[   ] SHA256SUMS                                       19-Oct-2020 22:03   80
Apache/2.2 Server at ftp.ntua.gr Port 80