I have this problem because Dropbear protocol on port 443 will not allow me to upload anything, even if I upload an attachment in Gmail, the connection will be cut off from the Server side. Only OpenSSH protocol seems to allow uploading. That's why I have to connect to Stunnel SSH server's 444 port to use OpenSSH protocol. Could you please confirm if it is possible to do that? If so, how can I connect?