ftp.ntua.gr:/mirror/ubuntu/dists/focal/main/installer-amd64/current/legacy-images/netboot/?C=M&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] boot.img.gz                                      21-Apr-2020 17:43   59M  
[   ] ldlinux.c32                                      21-Apr-2020 17:43  118K  
[   ] mini.iso                                         21-Apr-2020 17:43   74M  
[   ] netboot.tar.gz                                   21-Apr-2020 17:43   58M  
[   ] pxelinux.0                                       21-Apr-2020 17:43   42K  
[DIR] pxelinux.cfg/                                    21-Apr-2020 17:43    -   
[DIR] ubuntu-installer/                                21-Apr-2020 17:43    -   
[DIR] xen/                                             21-Apr-2020 17:43    -
Apache/2.2 Server at ftp.ntua.gr Port 80