The HTTPS/AS2 Service can be configured with a number of options.
HTTP over SSL/TLS
HTTP connections secured with a SSL/TLS certificate will create an encrypted tunnel between the client system and the server. This will protect any data that flows over the tunnel including commands, user names and passwords.
Managed File Transfer
uses a HTTPS connection for the File Transfer Portal interface on the default HTTPS port 443.
AS2 and S/MIME over HTTP(S)
Applicability Statement 2 ( AS2 ) is a method used to securely send/receive files over the Internet. The messages are built using the MIME format and sent over HTTP(S). AS2 messages can be compressed, signed, encrypted and then sent over an SSL tunnel, making AS2 a very secure option for transferring files. AS2 also implements MDN (receipts) to ensure the delivery of the message.