ftp.ntua.gr:/ubuntu/dists/bionic-updates/main/signed/linux-gke-5.3-amd64/?C=N&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[DIR] current/                                         20-Apr-2021 12:58    -   
[DIR] 5.3.0-1043.46/                                   20-Apr-2021 12:58    -   
[DIR] 5.3.0-1042.45/                                   15-Apr-2021 20:29    -   
[DIR] 5.3.0-1041.44/                                   23-Mar-2021 20:59    -
Apache/2.2 Server at ftp.ntua.gr Port 80