name: SOI
full_form: Start Of Interception
context: Currently IETF investigates a successor of IKE: The 2 current proposals are JFK and IKEv2. It is not part of this feasibility study to investigate or mandate the support of SOI on the SEG. However, to support migration from IKE to SOI for NDS/AF, the IKE signature method that is still supported by SOI shall be choosen. The current SOI proposal does support RSA signatures, hence this will be the proposed authentication method for NDS/AF. If a need for the pre-shared keys is seen, 3GPP should contribute to IETF about this issue, since it is still uncertain if the pre-shared keys will remain in SOI.
description: Start Of Interception (SOI) is a proposed protocol for secure communication, designed as a successor to IKE (Internet Key Exchange). It is currently under investigation by the IETF and plays a role in NDS/AF authentication methods defined within 3GPP specifications.
explanation: SOI is classified as a Protocol because it is explicitly described as a proposed protocol for secure communication. Its purpose is to establish secure connections, as indicated by its role as an IKE successor and involvement in authentication methods.
section_title: 6.6.2	Son of IKE (SOI)
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