Was trying to get windows ftp to work yesterday for an hour or so. I could connect to the server but could not get a directory listing. I narrowed down the problem to the firewall, I could get a directory listing locally but nothing externally. Turns out its not just sufficient to open port 21 [...]
So I spent far too much time trying to figure out how to get their Windows VPS to work. Here is what worked for me. This post expects you’ve done a Windows install before.