ftp.ntua.gr:/ubuntu/dists/bionic-proposed/main/signed/linux-gke-5.3-amd64/?C=D&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[DIR] 5.3.0-1039.42/                                   10-Nov-2020 19:33    -   
[DIR] 5.3.0-1040.43/                                   02-Feb-2021 12:13    -   
[DIR] 5.3.0-1043.46/                                   17-Apr-2021 09:33    -   
[DIR] current/                                         17-Apr-2021 09:33    -
Apache/2.2 Server at ftp.ntua.gr Port 80