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1.1 Glossary

1.1 Glossary

The following terms are specific to this document:

globally unique identifier (GUID): A term used interchangeably with universally unique identifier (UUID) in Microsoft protocol technical documents (TDs). Interchanging the usage of these terms does not imply or require a specific algorithm or mechanism to generate the value. Specifically, the use of this term does not imply or require that the algorithms described in [RFC4122] or [C706] must be used for generating the GUID. See also universally unique identifier (UUID).

HTTPS termination proxy: A proxy server that accepts incoming HTTPS connections, decrypts the SSL, and passes on the unencrypted HTTP payload to other servers.

Hypertext Transfer Protocol over Secure Sockets Layer (HTTPS): An extension of HTTP that securely encrypts and decrypts webpage requests.

Secure Sockets Layer (SSL): A security protocol that supports confidentiality and integrity of messages in client and server applications that communicate over open networks. SSL uses two keys to encrypt data-a public key known to everyone and a private or secret key known only to the recipient of the message. SSL supports server and, optionally, client authentication (2) using X.509 certificates (2). For more information, see [X509]. The SSL protocol is precursor to Transport Layer Security (TLS). The TLS version 1.0 specification is based on SSL version 3.0.

SHA1 hash: A hashing algorithm defined in [FIPS180] that was developed by the National Institute of Standards and Technology (NIST) and the National Security Agency (NSA).

SHA-1 hash: A hashing algorithm as specified in [FIPS180-2] that was developed by the National Institute of Standards and Technology (NIST) and the National Security Agency (NSA).

SSL/TLS handshake: The process of negotiating and establishing a connection protected by Secure Sockets Layer (SSL) or Transport Layer Security (TLS). For more information, see [SSL3] and [RFC2246].

SSTP client: A computer that implements the Secure Socket Tunneling Protocol (SSTP), and that initiates an SSTP connection to an SSTP server over TCP port 443.

SSTP far end: An entity that has sent an SSTP message that is currently being processed by an SSTP peer and to whom the response is sent by the SSTP peer.

SSTP management layer: An entity that manages the SSTP layer on the SSTP client as well as on the SSTP server.

SSTP peer: An entity that processes an SSTP message.

SSTP server: An entity on a network that implements the SSTP and that listens for SSTP connections over TCP port 443.

SSTP tunnel: An encrypted tunnel using the SSTP on an HTTPS (SSL/TLS protocol) connection.

state machine: A model of computing behavior composed of a specified number of states, transitions between those states, and actions to be taken. A state stores information about past transactions as it reflects input changes from the startup of the system to the present moment. A transition (such as connecting a network share) indicates a state change and is described by a condition that would need to be fulfilled to enable the transition. An action is a description of an activity that is to be performed at a given moment. There are several action types: Entry action: Performed when entering the state. Exit action: Performed when exiting the state. Input action: Performed based on the present state and input conditions. Transition action: Performed when executing a certain state transition.

MAY, SHOULD, MUST, SHOULD NOT, MUST NOT: These terms (in all caps) are used as defined in [RFC2119]. All statements of optional behavior use either MAY, SHOULD, or SHOULD NOT.

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