When using Filezilla with SFTP I get disconnected with exitcode 2147483647

Problem: You randomly get disconnected from FTP with exitcode 2147483647 but you are able to log back in within a few minutes.

Solution: The problem you are experiencing is due to too many simultaneous connections from the FTP client. This is being treated as an SSH attack by the server. To fix this, in Filezilla go to File -> Site Manager -> Select the connection with which you are having problems ->Transfer Settings -> Limit number of simultaneous connections to 1. That's it. You should not experience these disconnects anymore.