Title

  Test IKEv2.EN.I.1.1.11.4: Unrecognized Notify Message Type of Error
  Part A (BASIC)

Purpose

  To verify an IKEv2 device ignores the unrecognized Notify Message Type intended for
  reporting error.

References

  [RFC 4306] - Sections 3.10.1

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, SAr1, KEi, Ni)
    |                    | (Judgement #1)
    |<-------------------| IKE_SA_INIT Response (HDR, SAr1, KEr, Nr, N+)
    |                    | (Packet #1)
    |                    |
    |---------X          | IKE_AUTH request (HDR, SK {IDi, CERT, AUTH, N, SAi2, TSi, TSr})
    |                    | (Judgement #2)
    |                    |
    V                    V


 N: USE_TRANSPORT_MODE
 N+: Notify Payload with unrecognized Notify Message Type

Packet #1

See below

Packet #1: IKE_SA_INIT request

IPv6 Header	All fields are same as Common Packet #2
UDP Header	All fields are same as Common Packet #2
IKEv2 Header	All fields are same as Common Packet #2
SA Payload	All fields are same as Common Packet #2
KE Payload	All fields are same as Common Packet #2
Ni, Nr paylaod	Next Payload	41 (Notify)
	Other fields are same as Common Packet #2
N Payload	Next Payload	0
	Critical	0
	Reserved	0
	Payload Length	8
	Procotol ID	0
	SPI Size	0
	Notify Message Type	16383

  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 with a Notify payload of unrecognized
         Notify Message Type value.
     4. Observe the messages transmitted on Link A.

Observable Results

  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 never transmits an IKE_AUTH request including "ENCR_3DES",
       "AUTH_HMAC_SHA1_96" and "No Extended Sequence Numbers" as proposed algorithms.

Possible Problems

  * None