In the end, the log should show 1 successful and 4 failed transfers. I feel this may be a stupid question, but my disclaimer is that I've been awake for far too long already:

On the Remote Network Settings, clear 0. It also means that the load balancer does not need to do any special automatic handling of FTP.

Sure they'll be able to log in successfully, but their behavior will be the same as if the data ports were not open at all. Qcubed - The URL: It was my local client PC that wasn't playing along.