ftp.ntua.gr:/mirror/ubuntu/dists/trusty-updates/main/installer-amd64/current/images/xenial-netboot/?C=S&O=D 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[   ] mini.iso                                         04-Mar-2019 09:51   58M  
[   ] boot.img.gz                                      04-Mar-2019 09:51   46M  
[   ] netboot.tar.gz                                   04-Mar-2019 09:51   46M  
[   ] pxelinux.0                                       04-Mar-2019 09:51   26K  
[DIR] xen/                                             04-Mar-2019 09:51    -   
[DIR] ubuntu-installer/                                04-Mar-2019 09:51    -   
[DIR] pxelinux.cfg/                                    04-Mar-2019 09:51    -
Apache/2.2 Server at ftp.ntua.gr Port 80