ftp upload to ibays is not allowed by default.
Alternative to VPN is to use a sftp client,
this may help
http://www.foothill.edu/ctis/howto/SFTP_WinSCP.htmlalso see excerpt from manual:
http://mirror.contribs.org/smeserver/contribs/bobk/SME_Manual/chpt-14.02.htmlTo access the i-bay using FTP, you use your FTP client to connect to your server and use the i-bay name as the login id. If the i-bay requires a password, you will need to enter the i-bay password as well. If you are using a command-line or graphical FTP client, you will usually be prompted for the login username and password.
Note that users accessing the i-bay via FTP in this manner are not able to upload files to the i-bay. They can only download files from the i-bay to their client.
It is possible to upload files using FTP, but to do so you must login to the server with a valid user name, not the i-bay name. That user account must be a member of the group that has been given write permission for the i-bay (configured on the i-bay screen). You would then change to the i-bay directory (using the ftp command "cd ../../ibays/ibayname"). You will now be able to upload files from your FTP client to the appropriate directories.
Hope that helps