ftp.ntua.gr:/ubuntu/dists/xenial-backports/restricted/source/?C=N&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[DIR] by-hash/                                         19-May-2016 23:26    -   
[   ] Sources.xz                                       14-May-2021 09:23   64   
[   ] Sources.gz                                       14-May-2021 09:23   40   
[   ] Release                                          14-May-2021 09:23  113
Apache/2.2 Server at ftp.ntua.gr Port 80