ftp.ntua.gr:/ubuntu/dists/focal-updates/main/installer-amd64/current/legacy-images/netboot/?C=N&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] boot.img.gz                                      01-Feb-2021 10:23   63M  
[   ] ldlinux.c32                                      01-Feb-2021 10:23  118K  
[   ] mini.iso                                         01-Feb-2021 10:23   79M  
[   ] netboot.tar.gz                                   01-Feb-2021 10:23   63M  
[   ] pxelinux.0                                       01-Feb-2021 10:23   42K  
[DIR] pxelinux.cfg/                                    01-Feb-2021 10:23    -   
[DIR] ubuntu-installer/                                01-Feb-2021 10:23    -   
[DIR] xen/                                             01-Feb-2021 10:23    -
Apache/2.2 Server at ftp.ntua.gr Port 80