1. 21 Mar, 2025 1 commit
    • Robert Schmidt's avatar
      Merge remote-tracking branch 'origin/issue-915' into integration_2025_w12 (!3319) · 9c0eaefb
      Robert Schmidt authored
      Disable EPS NAS security algorithms in 5GMM UE capabilities
      
      OAI nrUE is not supporting multiple RATs, therefore the EPS NAS security
      algorithms bit in 5GMM UE capabilities is not relevant.
      
      This bit is only relevant if N26 interface is supported by the AMF and
      the UE is supporting S1 mode, meaning that the UE is connected to a 4G
      LTE network,  via the S1 interface (eNB - MME/SGW). When the UE performs
      an inter-system change from N1 mode to S1 mode, it transitions from 5GC
      to the EPC: at network level this happens over the N26 interface (which
      connects the 5G AMF to the 4G MME).
      
      In this transition is where the EPS security context becomes relevant:
      the UE does not know about the N26 interface, however is the AMF that
      can tell the UE, e.g. during the registration procedure, if the UE sets
      the S1 mode bit to "S1 mode supported" in the 5GMM capability IE, and
      the AMF supports the N26 interface, the AMF will include the Selected
      EPS NAS security algorithms IE in the SECURITY MODE COMMAND message,
      which is what happened in #915.
      
      Closes: #915
      9c0eaefb
  2. 20 Mar, 2025 1 commit
  3. 19 Mar, 2025 1 commit
  4. 18 Mar, 2025 4 commits
  5. 17 Mar, 2025 6 commits
  6. 14 Mar, 2025 3 commits
  7. 13 Mar, 2025 5 commits
  8. 12 Mar, 2025 19 commits