name: SAS
full_form: Security Attributes Service (OMG)
context: Four unidirectional SAs are established between the UE and the SS: SA1: port_uc to port_ps SA2: port_pc to port_us SA3: port_ps to port_uc SA4: port_us to port_pc The first pair (SA1 and SA3) is for bidirectional traffic between port_uc and port_ps. The second pair (SA2 and SA4) is for bidirectional traffic between port_pc and port_us. While TCP scenario will use all four SAs, in UDP, only two SAs are needed because there is no traffic from port_ps to port_uc nor from port_us to port_pc. Figure 5.1.1.2-1 shows one example of the use of ports and security association in UDP and TCP. Figure 5.1.1.2-1: Use of port and SA in UDP and TCP
description: The Security Attributes Service (SAS) is a standard from the Object Management Group (OMG) that provides a framework for managing security attributes in distributed systems. It is referenced in 3GPP TS 34.229, highlighting its importance in establishing security associations within telecommunications.
explanation: SAS is classified as a Standard because it is a formally defined specification (from the OMG) used to ensure interoperability and consistency in managing security attributes within distributed systems, including those relevant to telecommunications.
section_title: 5.1.1.2Security Associations Setup
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