ftp.ntua.gr:/debian/dists/stretch/non-free/source/by-hash/SHA256/?C=M&O=D 
Icon  Name                                                             Last modified      Size  
[DIR] Parent Directory                                                                      -   
[   ] 13fb7e9a6add1a985bb583d7016033ee7618138296711fc1b020d0ae7468c2fd 14-Aug-2021 10:42  127   
[   ] 6a6f0db34b7c5a0b3850eae0cf42ca0208ed2a992d2cf81edc9ba36b06cf4d2f 18-Jul-2020 13:40   77K  
[   ] 5345fdbe18b4a8b3749940d66653dbddc703a068733f7125debeb413d72864dc 18-Jul-2020 13:40   93K
Apache/2.2 Server at debian.noc.ntua.gr Port 80