Test IKEv2.EN.I.1.1.5.1: Retrying IKE_SA_INIT request with a Notify payload of type COOKIE
Part A: (ADVANCED)
To verify an IKEv2 device retries IKE_SA_INIT request using a Notify payload of type
COOKIE.
* [RFC 4306] - Sections 2.6 and 3.10.1
* [RFC 4718] - Sections 2.2 and 2.4
* 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, KEi, Ni)
| | (Judgement #1)
|<-------------------| IKE_SA_INIT Response (HDR, N(COOKIE))
| | (Packet #1)
| |
|------------------->| IKE_SA_INIT request (HDR, N(COOKIE), SAi1, KEi, Ni)
| | (Judgement #2)
| |
V V
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 |
IKE_SA Initiator's SPI |
The same value as corresponding
request's IKE_SA Initiator's SPI value |
| IKE_SA Responder's SPI |
0 |
| Next Payload |
41(N) |
| Major Version |
2 |
| Minor Version |
0 |
| Exchange Type |
34 (IKE_SA_INIT) |
| X (bits 0-2 of Flags) |
0 |
| I (bit 3 of Flags) |
0 |
| V (bit 4 of Flags) |
0 |
| R (bit 5 of Flags) |
1 |
| X (bits 6-7 Flags) |
0 |
| Message ID |
0 |
| Length |
any |
| N Payload |
Next Payload |
0 |
| Critical |
0 |
| Reserved |
0 |
| Payload Length |
any |
| Protocol ID |
0 |
| SPI Size |
0 |
| Notify Message Type |
COOKIE (16390) |
| Notification Data |
Cookie value |
Part A: (ADVANCED)
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 including a Notify payload of type COOKIE
to the NUT.
4. Observe the messages transmitted on Link A.
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
lgorithms.
Step 4: Judgment #2
The NUT transmits an IKE_SA_INIT request including a Notify payload of type COOKIE
ontaining following values:
1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! Next Payload !C! RESERVED ! Payload Length !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! Protocol ID ! SPI Size ! Notify Message Type !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! !
~ Security Parameter Index (SPI) ~
! !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
! !
~ Notification Data ~
! !
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 21 Notify Payload Format
* A Next Payload field is set to SA Payload (33).
* A Critical field is set to zero.
* A RESERVED field is set to zero.
* A Payload Length field is set to length of the current payload.
* A SPI Size field is set to zero.
* A Notify Message Type field is set to COOKIE (16390).
* A Notification Data field is set to the TN1 supplied cookie data.
* None.