Test IKEv2.EN.R.1.1.6.8: Sending INVALID_KE_PAYLOAD in Initial Exchange Part A: (BASIC)
To verify an IKEv2 device properly handles an invalid KE payload which has different D-H Group # from proposed D-H Group #.
* [RFC 4306] - Sections 2.7, 3.4 and 3.10.1 * [RFC 4718] - Sections 2.1 and 2.2
* 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.
NUT TN1 (End-Node) (End-Node) | | |<-------------------| IKE_SA_INIT request (HDR, SAi1(DH#2, DH#14), KEi(DH#14), Ni) | | (Packet #1) |------------------->| IKE_SA_INIT response (HDR, N(INVALID_KE_PAYLOAD(DH#2))) | | (Judgement #1) | | |<-------------------| IKE_SA_INIT request (HDR, SAi1(DH#2, DH#14), KEi(DH#2), Ni) | | (Packet #2) |------------------->| IKE_SA_INIT response (HDR, SAr1(DH#2), KEr(DH#2), Nr) | | (Judgement #2) | | V V
Packet #1 See below Packet #2 See Common Packet #1
Packet #1: IKE_SA_INIT request
IPv6 Header Same as the common packet #1 UDP Header Same as the common packet #1 IKEv2 Header Same as the common packet #1 SA Payload Same as the common packet #1 KEi Payload Next Payload 40 (Ni, Nr) Critical 0 Reserved 0 Payload Length 264 DH Group # 14 Reserved 0 Key Exchange Data any Ni, Nr Payload Same as the common packet #1
Part A: (BASIC) 1. TN1 starts to negotiate with NUT by sending IKE_SA_INIT request including a SA payload which contains a D-H Group transform proposes using D-H Group 2 and D-H Group 14, and a Key Exchange payload which contains 14 (D-H Group 14) as DH Group # field and the Key Exchange Data. 2. Observe the messages transmitted on Link A. 3. TN1 transmits an IKE_SA_INIT request including KE payload with D-H Group 2 public key value to the NUT. 4. Observe the messages transmitted on Link A.
Part A Step 2: Judgment #1 The NUT transmits an IKE_SA_INIT response including a Notify payload of type INVALID_KE_PAYLOAD which contains 2 (D-H Group 2) as Notification Data. The message's IKE_SA Responder's SPI value is set to zero.
Step 4: Judgment #2 The NUT transmits an IKE_SA_INIT response including "ENCR_3DES", "PRF_HMAC_SHA1", "AUTH_HMAC_SHA1_96" and "D-H group 2" as accepted algorithms.
* None.