3.1.1.1 Authentication Cookie

When a TSWPP client first connects to the TSWPP server, an authentication cookie is transmitted to the client, as specified in section 3.1. This opaque server generated cookie contains information to authenticate a user to the server as well as the security identifier (SID), as defined in [MS-DTYP] section 2.4.2, for the user that originally authenticated to the server.