How to force/require TLS connections on SQL Azure
"Regardless of the client library chosen, data is transferred using tabular data stream (TDS) over a secure sockets layer (SSL). Windows Azure SQL Database doesn’t support unencrypted connections. This will ensure data transmission is secure and can help prevent man-in-the-middle Jump attacks."

I don't know if this is true, I have it from "https://social.technet.microsoft.com/wiki/contents/articles/2763.windows-azure-sql-database-connection-encryption.aspx", but the connection was not secure (!!!!)