Title

  Test IKEv2.EN.I.1.1.1.3: 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
(End-Node)           (End-Node)
    |                    |
    |------------------->| 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, N, SAi2, TSi, TSr})
    |                    | (Judgement #2)
    |<-------------------| IKE_AUTH response (HDR, SK {IDr, AUTH, N, SAr2, TSi, TSr})
    |                    | (Packet #2)
    |                    |
    |<-------------------| IPSec {Echo Request}
    |                    | (Packet #3)
    |------------------->| IPSec {Echo Reply} 
    |                    | (Judgement #3)
    |                    |
    V                    V

 N: USE_TRANSPORT_MODE
Packet #1 See Common Packet #2
Packet #2 See Common Packet #4
Packet #3 See Common Packet #19
  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. TN1 transmits 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.