ftp.ntua.gr:/debian/dists/Debian9.13/main/installer-amd64/20170615/images/netboot/xen/?C=N&O=D 
Icon  Name                                                                   Last modified      Size  
[DIR] Parent Directory                                                                            -   
[   ] vmlinuz                                                                15-Jun-2017 11:34  4.0M  
[   ] initrd.gz                                                              15-Jun-2017 11:34   46M  
[TXT] debian.cfg                                                             15-Jun-2017 11:34  6.1K
Apache/2.2 Server at ftp.grnet.gr Port 80