ftp.ntua.gr:/ubuntu/dists/xenial-security/main/signed/linux-gcp-amd64/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[DIR] current/                                         16-Apr-2021 00:21    -   
[DIR] 4.15.0-1098.111~16.04.1/                         16-Apr-2021 00:21    -   
[DIR] 4.15.0-1097.110~16.04.1/                         15-Apr-2021 22:03    -   
[DIR] 4.15.0-1096.109~16.04.1/                         25-Mar-2021 13:18    -
Apache/2.2 Server at ftp.ntua.gr Port 80