Source Interface in my setup is the WAN Interface connected to the Internet. Zscaler support IP-SLA HTTP probes to check the cloud proxy health, on traditional routers you are able to use 'track' features to, for example, change the admin distance of a static route based on the results of the IP-SLA test. High Performance gateway uses IKEv2 and have applied the following IKE policy on Azure Gateway. IKEv2 Payload Types Transform Type Values IKEv2 Transform Attribute Types Transform Type 1 - Encryption Algorithm Transform IDs Transform Type 2 - Pseudorandom Function Transform IDs Transform Type 3 - Integrity Algorithm Transform IDs Transform Type 4 - Key Exchange Method Transform IDs Transform Type 5 - Extended Sequence Numbers Transform IDs Has anyone been able to do this on a ISR4k? 03-12-2019 This document describes Internet Key Exchange version 2 (IKEv2) debugs on Cisco IOS when a pre-shared key (PSK) is used. Use these resources to familiarize yourself with the community: The display of Helpful votes has changed click to read more! Same in every possible way. This section lists the configurations used in this document. Template applied to Service VPN 1, Source interface from VPN 0 (Internet Interface with public IP to reach external Firewall via Internet). Thank You. The vulnerability is due to incorrect handling of crafted IKEv2 SA-Init packets. Relevant Configuration:crypto ikev2 proposal PHASE1-prop encryption 3des aes-cbc-128 integrity sha1 group 2 crypto ikev2 keyring KEYRNG peer peer2 address 10.0.0.1 255.255.255.0 hostname host2 pre-shared-key local cisco pre-shared-key remote cisco, *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):Next payload: SA, version: 2.0 Exchange type:IKE_SA_INIT,flags:RESPONDER MSG-RESPONSEMessage id: 0, length: 449 Payload contents: SANext payload: KE, reserved: 0x0, length: 48 last proposal: 0x0, reserved: 0x0, length: 44 Proposal: 1, Protocol id: IKE, SPI size: 0, #trans: 4 last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA1 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA96 last transform: 0x0, reserved: 0x0: length: 8 type: 4, reserved: 0x0, id: DH_GROUP_1024_MODP/Group 2 KENext payload: N, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 NNext payload: VID, reserved: 0x0, length: 24 VID Next payload: VID, reserved: 0x0, length: 23 VID Next payload: NOTIFY, reserved: 0x0, length: 21 NOTIFY(NAT_DETECTION_SOURCE_IP) Next payload: NOTIFY, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_SOURCE_IP NOTIFY(NAT_DETECTION_DESTINATION_IP) Next payload: CERTREQ, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_DESTINATION_IP CERTREQ Next payload: NOTIFY, reserved: 0x0, length: 105 Cert encoding Hash and URL of PKIX NOTIFY(HTTP_CERT_LOOKUP_SUPPORTED) Next payload: NONE, reserved: 0x0, length: 8 Security protocol id: IKE, spi size: 0, type: HTTP_CERT_LOOKUP_SUPPORTED, *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: INIT_DONE Event: EV_DONE *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):Cisco DeleteReason Notify is enabled *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: INIT_DONE Event: EV_CHK4_ROLE *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: INIT_DONE Event:EV_START_TMR *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_WAIT_AUTH Event: EV_NO_EVENT *Nov 11 19:30:34.822: IKEv2:New ikev2 sa request admitted *Nov 11 19:30:34.822: IKEv2:Incrementing outgoing negotiating sa count by one, *Nov 11 19:30:34.823: IKEv2:Got a packet from dispatcher *Nov 11 19:30:34.823: IKEv2:Got a packet from dispatcher *Nov 11 19:30:34.823: IKEv2:Processing an item off the pak queue, I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: INIT_DONE Event:EV_START_TMR, *Nov 11 19:30:34.823: IKEv2:(SA ID = 1):Next payload: SA, version: 2.0 Exchange type: IKE_SA_INIT, flags:RESPONDER MSG-RESPONSEMessage id: 0, length: 449 Payload contents: SANext payload: KE, reserved: 0x0, length: 48 last proposal: 0x0, reserved: 0x0, length: 44 Proposal: 1, Protocol id: IKE, SPI size: 0, #trans: 4 last transform: 0x3, reserved: 0x0: length: 12 type: 1, reserved: 0x0, id: AES-CBC last transform: 0x3, reserved: 0x0: length: 8 type: 2, reserved: 0x0, id: SHA1 last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA96 last transform: 0x0, reserved: 0x0: length: 8 type: 4, reserved: 0x0, id: DH_GROUP_1024_MODP/Group 2 KENext payload: N, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 NNext payload: VID, reserved: 0x0, length: 24 *Nov 11 19:30:34.823: IKEv2:Parse Vendor Specific Payload: CISCO-DELETE-REASON VID Next payload: VID, reserved: 0x0, length: 23 *Nov 11 19:30:34.823: IKEv2:Parse Vendor Specific Payload: (CUSTOM) VID Next payload: NOTIFY, reserved: 0x0, length: 21 *Nov 11 19:30:34.823: IKEv2:Parse Notify Payload: NAT_DETECTION_SOURCE_IP NOTIFY(NAT_DETECTION_SOURCE_IP) Next payload: NOTIFY, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_SOURCE_IP *Nov 11 19:30:34.824: IKEv2:Parse Notify Payload: NAT_DETECTION_DESTINATION_IP NOTIFY(NAT_DETECTION_DESTINATION_IP) Next payload: CERTREQ, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_DESTINATION_IP CERTREQ Next payload: NOTIFY, reserved: 0x0, length: 105 Cert encoding Hash and URL of PKIX *Nov 11 19:30:34.824: IKEv2:Parse Notify Payload: HTTP_CERT_LOOKUP_SUPPORTED NOTIFY(HTTP_CERT_LOOKUP_SUPPORTED) Next payload: NONE, reserved: 0x0, length: 8 Security protocol id: IKE, spi size: 0, type: HTTP_CERT_LOOKUP_SUPPORTED, *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_WAIT_INIT Event: EV_RECV_INIT *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Processing IKE_SA_INIT message *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_CHK4_NOTIFY *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_VERIFY_MSG *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_PROC_MSG *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_DETECT_NAT *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Process NAT discovery notify *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Processing nat detect src notify *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Remote address matched *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Processing nat detect dst notify *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):Local address matched *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):No NAT found *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_CHK_NAT_T *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_PROC_INIT Event: EV_CHK_CONFIG_MODE *Nov 11 19:30:34.824: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event:EV_GEN_DH_SECRET *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event: EV_NO_EVENT *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event: EV_OK_RECD_DH_SECRET_RESP *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):Action: Action_Null *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event:EV_GEN_SKEYID *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):Generate skeyid *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event: EV_DONE *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):Cisco DeleteReason Notify is enabled *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: INIT_DONE Event: EV_CHK4_ROLE *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_BLD_AUTH Event: EV_GET_CONFIG_MODE *Nov 11 19:30:34.831: IKEv2:Sending config data to toolkit *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_BLD_AUTH Event: EV_CHK_EAP. For a branch office VPN that uses IKEv1, the Phase 1 exchange can use Main Mode or Aggressive Mode. This is reposted from the Networking Academy area since there were no replies. The IKE_AUTH packet contains: ISAKMP Header(SPI/ version/flags), IDi(initiator's identity), AUTH payload, SAi2(initiates the SA-similar to the phase 2 transform set exchange in IKEv1), and TSi and TSr (Initiator and Responder Traffic selectors): They contain the source and destination address of the initiator and responder respectively for forwarding/receiving encrypted traffic. 0 Helpful Share Reply JW_UK Beginner In response to JW_UK Options 09-28-2019 03:19 AM Help would really be appreciated. I shared this with TAC too. Related Community Discussions View Bug Details in Bug Search Tool Why Is Login Required? - edited All rights reserved. I also had to mention the same ACL in the local policy for this to work. You cannot use PSK for authentication of a Remote Access FlexVPN, see this screenshot below from Cisco live presentation BRKSEX-2881. In IKEv1 there was a clearly demarcated phase1 exchange that consisted of six (6) packets followed by a phase 2 exchange that consisted of three (3) packets; the IKEv2 exchange is variable. First pair of messages is the IKE_SA_INIT exchange. Be aware the static route will only be withdrawn from the routing table if the Tunnel goes down. Are you seeing encrypts and decrypts over your IPSEC tunnel? Create VPN Gateway Policy (Phase1) To create a Phase1 VPN policy, go to Configuration -> VPN -> IPSec VPN and click on the " VPN Gateway " tab. N(Notify payload-optional). For more information, refer to IKEv2 Packet Exchange and Protocol Level Debugging. Relevant Configuration:crypto ipsec transform-set TS esp-3des esp-sha-hmac crypto ipsec profile phse2-prof set transform-set TS set ikev2-profile IKEV2-SETUP, *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_BLD_AUTH Event:EV_GEN_AUTH *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_BLD_AUTH Event: EV_CHK_AUTH_TYPE *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_BLD_AUTH Event: EV_OK_AUTH_GEN *Nov 11 19:30:34.831: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000000 CurState: I_BLD_AUTH Event: EV_SEND_AUTH *Nov 11 19:30:34.831: IKEv2:Construct Vendor Specific Payload: CISCO-GRANITE *Nov 11 19:30:34.831: IKEv2:Construct Notify Payload: INITIAL_CONTACT *Nov 11 19:30:34.831: IKEv2:Construct Notify Payload: SET_WINDOW_SIZE *Nov 11 19:30:34.831: IKEv2:Construct Notify Payload: ESP_TFC_NO_SUPPORT *Nov 11 19:30:34.831: IKEv2:Construct Notify Payload: NON_FIRST_FRAGS Payload contents: VID Next payload: IDi, reserved: 0x0, length: 20 IDiNext payload: AUTH, reserved: 0x0, length: 12 Id type: IPv4 address, Reserved: 0x0 0x0 AUTHNext payload: CFG, reserved: 0x0, length: 28 Auth method PSK, reserved: 0x0, reserved 0x0 CFGNext payload: SA, reserved: 0x0, length: 309 cfg type: CFG_REQUEST, reserved: 0x0, reserved: 0x0, *Nov 11 19:30:34.831: SA Next payload:TSi, reserved: 0x0, length: 40 last proposal: 0x0, reserved: 0x0, length: 36 Proposal: 1, Protocol id: ESP, SPI size: 4, #trans: 3 last transform: 0x3, reserved: 0x0: length: 8 type: 1, reserved: 0x0, id: 3DES last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA96 last transform: 0x0, reserved: 0x0: length: 8 type: 5, reserved: 0x0, id: Don't use ESN TSiNext payload: TSr, reserved: 0x0, length: 24 Num of TSs: 1, reserved 0x0, reserved 0x0 TS type: TS_IPV4_ADDR_RANGE, proto id: 0, length: 16 start port: 0, end port: 65535 start addr: 0.0.0.0, end addr: 255.255.255.255 TSrNext payload: NOTIFY, reserved: 0x0, length: 24 Num of TSs: 1, reserved 0x0, reserved 0x0 TS type: TS_IPV4_ADDR_RANGE, proto id: 0, length: 16 start port: 0, end port: 65535 start addr: 0.0.0.0, end addr: 255.255.255.255, NOTIFY(INITIAL_CONTACT) Next payload: NOTIFY, reserved: 0x0, length: 8 Security protocol id: IKE, spi size: 0, type: INITIAL_CONTACT NOTIFY(SET_WINDOW_SIZE) Next payload: NOTIFY, reserved: 0x0, length: 12 Security protocol id: IKE, spi size: 0, type: SET_WINDOW_SIZE NOTIFY(ESP_TFC_NO_SUPPORT) Next payload: NOTIFY, reserved: 0x0, length: 8 Security protocol id: IKE, spi size: 0, type: ESP_TFC_NO_SUPPORT NOTIFY(NON_FIRST_FRAGS) Next payload: NONE, reserved: 0x0, length: 8 Security protocol id: IKE, spi size: 0, type: NON_FIRST_FRAGS *Nov 11 19:30:34.832: IKEv2:(SA ID = 1):Next payload: ENCR, version: 2.0 Exchange type:IKE_AUTH, flags:INITIATORMessage id: 1, length: 556 Payload contents: ENCR Next payload: VID, reserved: 0x0, length: 528 *Nov 11 19:30:34.833: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000001CurState: I_WAIT_AUTHEvent: EV_NO_EVENT, *Nov 11 19:30:34.832: IKEv2:Got a packet from dispatcher *Nov 11 19:30:34.832: IKEv2:Processing an item off the pak queue *Nov 11 19:30:34.832: IKEv2:(SA ID = 1):Request has mess_id 1; expected 1 through 1 *Nov 11 19:30:34.832:IKEv2:(SA ID = 1):Next payload: ENCR, version: 2.0 Exchange type:IKE_AUTH, flags:INITIATORMessage id: 1, length: 556 Payload contents: *Nov 11 19:30:34.832: IKEv2:Parse Vendor Specific Payload: (CUSTOM) VID Next payload: IDi, reserved: 0x0, length: 20 IDiNext payload: AUTH, reserved: 0x0, length: 12 Id type: IPv4 address, Reserved: 0x0 0x0 AUTH Next payload: CFG, reserved: 0x0, length: 28 Auth method PSK, reserved: 0x0, reserved 0x0 CFG Next payload: SA, reserved: 0x0, length: 309 cfg type: CFG_REQUEST, reserved: 0x0, reserved: 0x0 *Nov 11 19:30:34.832: attrib type: internal IP4 DNS, length: 0 *Nov 11 19:30:34.832: attrib type: internal IP4 DNS, length: 0 *Nov 11 19:30:34.832: attrib type: internal IP4 NBNS, length: 0 *Nov 11 19:30:34.832: attrib type: internal IP4 NBNS, length: 0 *Nov 11 19:30:34.832: attrib type: internal IP4 subnet, length: 0 *Nov 11 19:30:34.832: attrib type: application version, length: 257 attrib type: Unknown - 28675, length: 0 *Nov 11 19:30:34.832: attrib type: Unknown - 28672, length: 0 *Nov 11 19:30:34.832: attrib type: Unknown - 28692, length: 0 *Nov 11 19:30:34.832: attrib type: Unknown - 28681, length: 0 *Nov 11 19:30:34.832: attrib type: Unknown - 28674, length: 0 *Nov 11 19:30:34.832:SANext payload: TSi, reserved: 0x0, length: 40 last proposal: 0x0, reserved: 0x0, length: 36 Proposal: 1, Protocol id: ESP, SPI size: 4, #trans: 3 last transform: 0x3, reserved: 0x0: length: 8 type: 1, reserved: 0x0, id: 3DES last transform: 0x3, reserved: 0x0: length: 8 type: 3, reserved: 0x0, id: SHA96 last transform: 0x0, reserved: 0x0: length: 8 type: 5, reserved: 0x0, id: Don't use ESN TSiNext payload: TSr, reserved: 0x0, length: 24 Num of TSs: 1, reserved 0x0, reserved 0x0 TS type: TS_IPV4_ADDR_RANGE, proto id: 0, length: 16 start port: 0, end port: 65535 start addr: 0.0.0.0, end addr: 255.255.255.255 TSr Next payload: NOTIFY, reserved: 0x0, length: 24 Num of TSs: 1, reserved 0x0, reserved 0x0 TS type: TS_IPV4_ADDR_RANGE, proto id: 0, length: 16 start port: 0, end port: 65535 start addr: 0.0.0.0, end addr: 255.255.255.255. IKEv2 Settings Policy - HQ-VPN Auth Type - Preshared Manual Key Key is set in both fields IPsec Tab: Crypto Map Type - Static IKEv2 Mode - Tunnel Transform Sets IKEv2 Proposals - SHA-256 Enable Reverse Route Injection- Checked Enable PFS - Checked Modulus Group - 19 Lifetime Duration - 28800 Lifetime Size - 4608000 Advanced Tab: The sample configuration connects a Cisco ASA device to an Azure route-based VPN gateway. what i am missing here. Find answers to your questions by entering keywords or phrases in the Search bar above. Nonce Ni(optional): If the CHILD_SA is created as part of the initial exchange, a second KE payload and nonce must not be sent. In the IKEv1 Phase 1 settings, you can select one of these modes: Main Mode. I followed the guide and created the IPSEC interface on the service side instead of VPN0, unfortunately I'm getting a IKEv2 failure: IKEv2:% Getting preshared key from profile keyring if-ipsec1-ikev2-keyringIKEv2:% Matched peer block 'if-ipsec1-ikev2-keyring-peer'IKEv2:(SESSION ID = 0,SA ID = 0):Searching Policy with fvrf 0, local address X.X.X.XIKEv2:(SESSION ID = 0,SA ID = 0):Found Policy 'policy1-global'IKEv2-ERROR:Address type 1622425149 not supported. These debug commands are used in this document: *Nov 11 20:28:34.003: IKEv2:Got a packet from dispatcher *Nov 11 20:28:34.003: IKEv2: Processing an item off the pak queue *Nov 11 19:30:34.811: IKEv2:% Getting preshared key by address 10.0.0.2 *Nov 11 19:30:34.811: IKEv2:Adding Proposal PHASE1-prop to toolkit policyle *Nov 11 19:30:34.811: IKEv2:(1): Choosing IKE profile IKEV2-SETUP *Nov 11 19:30:34.811: IKEv2:New ikev2 sa request admitted *Nov 11 19:30:34.811: IKEv2:Incrementing outgoing negotiating sa count by one. Router2 sends out the responder message to Router 1. It's in roadmap. If this CREATE_CHILD_SA exchange is rekeying an existing SA other than the IKE_SA, the leading N payload of type REKEY_SA must identify the SA being rekeyed. #proposal cisco. 05:29 AM. No action taken. Router 1 initiates the CHILD_SA exchange. In this document . You wrote "had to change source interface to Service VPN". I have a similar problem with an IPSec Tunnel to an external Firewall. If the SA offers include different DH groups, KEi must be an element of the group the initiator expects the responder to accept. For more information on the differences and an explanation of the packet exchange, refer toIKEv2 Packet Exchange and Protocol Level Debugging. Router1 verifies and processes the response: (1) The initiator DH secret key is computed, and (2) the initiator skeyid is also generated. tanyatamir53355. Edit your Feature Template for the VPN Interface Ethernet that is applied to your physical interface in VPN0.Under ACL/QOS add a IPv4 Ingress Access List using the name of the ACL you created in the first step. Local Type = 0. For more information, refer toIKEv2 Packet Exchange and Protocol Level Debugging. The information in this document is based on these software and hardware versions: The information in this document was created from the devices in a specific lab environment. Which Interface did you use? The connection uses a custom IPsec/IKE policy with the UsePolicyBasedTrafficSelectors option, as described in this article.. Could you please clarify, as I'm waiting for this feature being available for some months now. When i run debug on Cisco ASA i found following, also when tunnel is up i am seeing following messaged in debugging, not sure what is going on. Router 1 receives the IKE_SA_INIT response packet from Router 2. Nonce Ni (optional): If the CHILD_SA is created as part of the initial exchange, a second KE payload and nonce must not be sent), KEi (Key-optional): The CREATE_CHILD_SA request might optionally contain a KE payload for an additional DH exchange to enable stronger guarantees of forward secrecy for the CHILD_SA. The first CHILD_SA is created for the proxy_ID pair that matches the trigger packet. Description (partial) Symptom: Garbage value (non-comprehensible) seen in the ikev2 error line "Address type 4132115430 not supported" Conditions: When ikev2 error debugging is turned on. Working output: #show crypto ikev2 profile IKEv2 profile: default Ref Count: 4 Match criteria: Fvrf: global Local address/interface: none Identities: none Certificate maps: mymap Local identity: none <----- Remote identity: none Conditions: FlexVPN No local identity configured, relaying on global default. #address 10.0.0.2. Failed to remove peer correlation entry from cikePeerCorrTable. : crypto ikev2 profile default . If it guesses wrong, the CREATE_CHILD_SA exchange fails, and it must retry with a different KEi. IKEv2 allows the security association to remain unchanged despite changes in the underlying connection. Customers Also Viewed These Support Documents, Branch router, ISR4451-X, version 16.12.1b. These parameters are identical to the one that was received from ASA1. Router 2 receives and verifies the authentication data received from Router 1. I believe it is specific to ISR4K's and being fixed in the November code release. The keys used for the encryption and integrity protection are derived from SKEYID and are known as: SK_e (encryption), SK_a (authentication), SK_d is derived and used for derivation of further keying material for CHILD_SAs, and a separate SK_e and SK_a is computed for each direction. Components Used The information in this document is based on these software and hardware versions: Internet Key Exchange Version 2 (IKEv2) If it guesses wrong, the CREATE_CHILD_SA exchange fails, and it will have to retry with a different KEi. #crypto ikev2 policy cisco. These messages negotiate cryptographic algorithms, exchange nonces, and do a Diffie-Hellman exchange.