ftp.ntua.gr:/ubuntu/dists/xenial/main/installer-amd64/current/images/netboot/?C=N&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] boot.img.gz                                      20-Apr-2016 18:53   42M  
[   ] ldlinux.c32                                      20-Apr-2016 18:53  114K  
[   ] mini.iso                                         20-Apr-2016 18:53   54M  
[   ] netboot.tar.gz                                   20-Apr-2016 18:53   42M  
[   ] pxelinux.0                                       20-Apr-2016 18:53   42K  
[DIR] pxelinux.cfg/                                    20-Apr-2016 18:53    -   
[DIR] ubuntu-installer/                                20-Apr-2016 18:53    -   
[DIR] xen/                                             20-Apr-2016 18:53    -
Apache/2.2 Server at ftp.ntua.gr Port 80