Hi, you can take a look at NDM (Network Data Mover). It is a secure solution but it’s very expensive and may be you cannot afford. Here is one another option that is called
JSCAPE Secure FTP Server. This is a platform independent managed file transfer server that supports FTP, secure FTP (FTP over SSL), SFTP/SSH, HTTP, HTTPS and WebDAV protocols. It helps in file transfer and may be it will serve you as a good option. I have practically experienced this system and it helps you in automation of file process and serves as a convenient way to transfer files in a secure mode.
Hope you find my suggestion useful.