GitHub - 9001 copyparty: Portable file server with accelerated . . . The best safest approach is to configure your reverse-proxy so it gives copyparty a header which only contains the client's true real IP-address, and then setting --xff-hdr theHeaderName --rproxy 1 but alternatively, if you want need to let copyparty handle this, look out for red and yellow log messages which explain how to do that