Test IKEv2.EN.I.1.2.4.6: Use of the old IKE_SA
Part A: (BASIC)
To verify an IKEv2 device properly handles new CHILD_SA and old CHILD_SA.
* [RFC 4306] - Sections 2.8
* Network Topology
Connect the devices according to the Common Topology.
* Configuration
In each part, configure the devices according to the Common Configuration.
In addition, set IKE_SA Lifetime to 60 seconds and set CHILD_SA Lifetime to 300
seconds.
* 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, 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} | repeat Echo exchange until lifetime of SA is expired
| | (Judgement #3) |
| | ---
--- ---
| |
|------------------->| CREATE_CHILD_SA request (HDR, SK SA, Ni})
| | (Judgement #4)
|<-------------------| CREATE_CHILD_SA Response (HDR, SK, {SA, Nr})
| | (Packet #4)
| |
|------------------->| INFORMATIONAL request (HDR, SK {}) (old IKE_SA)
| | (Judgement #5)
|<-------------------| INFORMATIONAL Response (HDR, SK {}) (old IKE_SA)
| | (Packet #5)
| |
V V
N: USE_TRANSPORT_MODE
| Packet #1 |
See Common Packet #2 |
| Packet #2 |
See Common Packet #4 |
| Packet #3 |
See Common Packet #19 |
| Packet #4 |
See Common Packet #12 |
| Packet #5 |
See Common Packet #17
(Use old IKE_SA) |
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 the first negotiated algorithms to NUT.
7. Observe the messages transmitted on Link A.
8. Repeat Steps 6 and 7 until lifetime of SA is expired.
9. Observe the messages transmitted on Link A.
10. After reception of CREATE_CHILD_SA request for rekeying from the NUT, TN1 responds
with a CREATE_CHILD_SA response to the NUT.
11. TN1 transmits an INFORMATIONAL request with no payload to the NUT. The message is
encrypted by the old IKE_SA.
12. 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
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 corresponding algorithms.
Step 9: Judgment #4
The NUT transmits a CREATE_CHILD_SA request including "ENCR_3DES",
"PRF_HMAC_SHA1", "AUTH_HMAC_SHA1_96" and "D-H group 2" as proposed
algorithms.
Step 12: Judgment #5
The NUT transmits an INFORMATIONAL response with no payload to the TN1. THe
message is encrypted by the old IKE_SA.
* Each NUT has the different lifetime of SA.