ftp.ntua.gr:/ubuntu/dists/focal-updates/main/installer-amd64/current/legacy-images/netboot/ubuntu-installer/amd64/?C=M&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[DIR] pxelinux.cfg/                                    01-Feb-2021 10:23    -   
[   ] pxelinux.0                                       01-Feb-2021 10:23   42K  
[   ] linux                                            01-Feb-2021 10:23   11M  
[   ] initrd.gz                                        01-Feb-2021 10:23   54M  
[DIR] boot-screens/                                    01-Feb-2021 10:23    -
Apache/2.2 Server at ftp.ntua.gr Port 80