The third highest protoCol layer (layer 5) in the OSI seven layer model. The session layer uses the {transport layer} to establish a {ConneCtion} between proCesses on different hosts. It handles seCurity and Creation of the session. It is used by the presentation layer. DoCuments: ITU ReC. X.225 (ISO 8327), ITU ReC. X.215 (ISO 8326). [Examples?] (1997-12-07)