Ftp Bnet 2021 ((new)) Link
The client would simply connect to the Battle.net server, request a specific file, and the server would deliver it. However, this simplicity came with a significant limitation: there was no form of user authentication. Anyone who knew the server address and the exact filename could potentially download the file. For non-sensitive content like ad banners, this wasn't a problem. However, for game patches and updates, it represented a potential security or verification gap. It also didn't allow for listing files on the server, so users had to know the exact filename to download anything.
Automation & integration
Configuring network ports correctly depends entirely on the connection mode selected by the client and supported by the server. ftp bnet 2021
