IIS FTP not working with non-default ports

PS: Besides FileZilla Server and IIS, what other FTP server software is used in businesses?

Almost forgot that question, I personally use zFTP server www.zftpserver.com Supports both secure and usual FTP. Free and has a remote GUI.

I'll keep this in mind , because so far, I don't see an IIS FTP option that allows you to use secure FTP (i could be overlooking it or missing something, though)

Not all IIS7 FTP changes take place, even if the FTP service is restarted from the admin control panel.

For example setting the Firewall Data Port Range and possibly the External Firewall IP Address requires that the "Microsoft FTP Service" service be restarted before it will take effect. I spent ridiculous amounts of time trying to figure this out among other things.

I used Core FTP as the client:

Username format FTPSiteHostname|Username
For example: ftp.somedomain.com|someuser

Check PASV
Connection: AUTH TLS
Check SSL Listings
Check SSL Transfer
Check Windows SSL

The username syntax is *VERY* important, don't forget it!