name: N3IWF
full_form: Non 3GPP Inter Working Function
context: of the IPsec SA between the UE and the N3IWF and shall include it in the NGAP Initial Context Setup Request sent to the N3IWF. 13. N3IWF sends an EAP-Success/EAP-5G to the UE upon reception of the NGAP Initial Context Setup Request containing the N3IWF key, KN3IWF. This completes the EAP-5G session and no further EAP-5G packets are exchanged. If the N3IWF does not receive the KN3IWF from AMF, the N3IWF shall respond with an EAP-Failure 14. The IPsec SA is established between the UE and N3IWF by using the N3IWF key KN3IWF that was created in the UE using the uplink NAS COUNT associated with NAS connection identifier "0x02" as defined in Annex A.9 and was received by N3IWF from the AMF in step 12. 15. Upon successful establishment of the IPsec SA between the UE and the N3IWF, the N3IWF shall send the NGAP Initial Context Setup Response message to the AMF. 15a. The AMF may determine whether the N3IWF is appropriate for the slice selected as defined in clause 4.12.2.2 of TS 23.502[8]. If
description: The Non-3GPP Interworking Function (N3IWF) enables interworking between non-3GPP access networks and the 5G core network. It handles authentication, session management, and IPsec SA establishment between the User Equipment (UE) and itself.
explanation: The text describes the N3IWF's role in managing interactions between different network types (non-3GPP and 5G core), performing key functions like authentication and session control. This clearly classifies it as a Network Function.
section_title: 7.2.1	Authentication for Untrusted non-3GPP Access
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biotag_Description: O,B-Network Function,I-Network Function,I-Network Function,O,O,O,O,O,O,O,O,O,B-Technology,O,O,O,O,O,O,O,O,B-Protocol,B-Mode,O,O,O,B-Device,I-Device,O,O,O