1.3.8.1 RDSTLS
The RDSTLS Security Protocol (section 5.4.5.3) is primarily used in the context of server redirection scenarios. When the Redirection PDU is sent to the client (step 3 in section 1.3.8), RDSTLS should be used for the subsequent reconnection and authentication phase (steps 4 and 5 of section 1.3.8) if it contains two key data items:
The authentication certificate of the target server.
An encrypted password for user authentication.
These two items are used in the context of RDSTLS to facilitate mutual authentication when reconnecting to the target server.