ftp.ntua.gr:/ubuntu/dists/xenial-security/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] Contents-amd64.gz                                30-Apr-2021 08:47  103M  
[   ] Contents-i386.gz                                 30-Apr-2021 09:40   78M  
[   ] InRelease                                        14-May-2021 09:23  107K  
[   ] Release                                          14-May-2021 09:23  106K  
[   ] Release.gpg                                      14-May-2021 09:23  916   
[DIR] universe/                                        03-Feb-2016 17:04    -   
[DIR] restricted/                                      03-Feb-2016 17:04    -   
[DIR] multiverse/                                      03-Feb-2016 17:04    -   
[DIR] main/                                            07-May-2018 18:18    -   
[DIR] by-hash/                                         24-Apr-2016 23:49    -
Apache/2.2 Server at ftp.ntua.gr Port 80