Title

  Test IKEv2.EN.I.2.1.1.2: Use of CHILD_SA
  Part A (BASIC)


Purpose

  To verify an IKEv2 device properly handles the Initial Exchanges using Pre-shared key


References

  * [RFC 4306] - Sections 1.2


Test Setup

  * Network Topology
      Connect the devices according to the Common Topology.
  * Configuration
      In each part, configure the devices according to the Common Configuration.
  * Pre-Sequence and Cleanup Sequence
      IKEv2 on the NUT is disabled after each part.


Procedure

   

   NUT            TN1           TH1
(End-Node)       (SGW)         (Host)
    |              |             |
    |------------->|             | IKE_SA_INIT request (HDR, SAi1, KEi, Ni)
    |              |             | (Judgement #1)
    |<-------------|             | IKE_SA_INIT Response (HDR, SAr1, KEr, Nr)
    |              |             | (Packet #1)
    |              |             |
    |------------->|             | IKE_AUTH request (HDR, SK {IDi, AUTH, SAi2, TSi, TSr})
    |              |             | (Judgement #2)
    |<-------------|             | IKE_AUTH Response (HDR, SK {IDr, AUTH, SAr2, TSi, TSr})
    |              |             | (Packet #2)
    |              |             |
    |<=============+-------------| IPSec {Echo Request}
    |              |             | (Packet #3)
    |==============+------------>| IPSec {Echo Reply}
    |              |             | (Judgement #3)
    |              |             |
    V              V             V
Packet #1 See Common Packet #2
Packet #2 See Common Packet #6
Packet #3 See Common Packet #20
  Part A (BASIC)
       1. NUT starts to negotiate with TN1 by sending IKE_SA_INIT request.
       2. Observe the messages transmitted on Link A.
       3. TN1 responds with an IKE_SA_INIT response to the NUT.
       4. Observe the messages transmitted on Link A.
       5. After reception of IKE_AUTH request from the NUT, TN1 responds with an IKE_AUTH
          response to the NUT
       6. TH1 transmits an Echo Request and TN1 forwards an Echo Request with IPsec ESP using
          corresponding algorithms to NUT.
       7. Observe the messages transmitted on Link A.


Observable Result

  Part A
    Step 2: Judgment #1
      The NUT transmits an IKE_SA_INIT request including "ENCR_3DES",
      "PRF_HMAC_SHA1", "AUTH_HMAC_SHA1_96" and "D-H group 2" as proposed
      algorithms.
  
    Step 4: Judgment #2
      The NUT transmits an IKE_AUTH request including "ENCR_3DES",
      "AUTH_HMAC_SHA1_96" and "No Extended Sequence Numbers" as proposed algorithms.
  
    Step 7: Judgment #3
      The NUT transmits an Echo Reply with IPsec ESP using ENCR_3DES an
      AUTH_HMAC_SHA1_96.


Possible Problems

  None.