Failed to remove peer correlation entry from cikePeerCorrTable. Hence, you would see 'PFS (Y/N): N, DH group: none' until the first rekey. tanyatamir53355. 1 Accepted Solution. This is reposted from the Networking Academy area since there were no replies. Has anyone ever created an exception list to bypass zscaler in certain situations and go out the DIA door instead? Remote Type = 0. . For a branch office VPN that uses IKEv1, the Phase 1 exchange can use Main Mode or Aggressive Mode. It contains: ISAKMP Header (SPI/version/flags), SAi1 (cryptographic algorithm that IKE initiator supports), KEi (DH public Key value of the initiator), and N (Initiator Nonce). #peer R3. If your network is live, make sure that you understand the potential impact of any command. Can you also post the config for the VPN template. The address range specifies that all traffic to and from that range are tunnelled. For more information on the differences and an explanation of the packet exchange, refer toIKEv2 Packet Exchange and Protocol Level Debugging. You can only use PSK when the client is another FlexVPN hardware (router) client or Strongswan. Tunnel is up on the Responder. Router 1 initiates the CHILD_SA exchange. 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. Router1 verifies and processes the response: (1) The initiator DH secret key is computed, and (2) the initiator skeyid is also generated. I have a working IPSEC project in GNS3 that uses csr1000 and 7200 routers, VTI interfaces, and IKEv1. *Nov 11 19:30:34.841: IKEv2:Adding ident handle 0x80000002 associated with SPI 0x9506D414 for session 8 *Nov 11 19:30:34.841: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000001 CurState: AUTH_DONE Event: EV_OK_RECD_LOAD_IPSEC *Nov 11 19:30:34.841: IKEv2:(SA ID = 1):Action: Action_Null *Nov 11 19:30:34.841: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000001 CurState: AUTH_DONE Event: EV_START_ACCT *Nov 11 19:30:34.841: IKEv2:(SA ID = 1):Accounting not required *Nov 11 19:30:34.841: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000001 CurState: AUTH_DONE Event: EV_CHECK_DUPE *Nov 11 19:30:34.841: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000001 CurState:AUTH_DONEEvent: EV_CHK4_ROLE, *Nov 11 19:30:34.841: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000001 CurState:READYEvent: EV_CHK_IKE_ONLY *Nov 11 19:30:34.841: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (I) MsgID = 00000001 CurState: READY Event: EV_I_OK, *Nov 11 19:30:34.840: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000001 CurState:READYEvent: EV_R_OK *Nov 11 19:30:34.840: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000001 CurState: READY Event: EV_NO_EVENT. They contain the source and destination address of the initiator and responder respectively for forwarding/receiving encrypted traffic. Consult your VPN device vendor specifications to verify that . Initiator receives response from Responder. With IKEv1, you see a different behavior, because Child SA creation happens during Quick Mode, and the CREATE_CHILD_SA message has a provision to carry the Key Exchange payload that specifies the DH parameters to derive a new shared secret. Template applied to Service VPN 1, Source interface from VPN 0 (Internet Interface with public IP to reach external Firewall via Internet). Be aware the static route will only be withdrawn from the routing table if the Tunnel goes down. Select the " Show Advanced Settings " option on the top left and make sure the enable box is checked. A Notify Payload might appear in a response message (usually specifying why a request was rejected), in an informational exchange (to report an error not in an IKE request), or in any other message to indicate sender capabilities or to modify the meaning of the request. 189067: *Aug 8 14:01:22.433 Chicago: IKEv2:Config data recieved: 189068: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Config-type: Config-request, 189069: *Aug 8 14:01:22.433 Chicago: IKEv2:IKEv2 responder - unsupported attrib unknown in cfg-req, 189070: *Aug 8 14:01:22.433 Chicago: IKEv2:IKEv2 responder - unsupported attrib unknown in cfg-req, 189071: *Aug 8 14:01:22.433 Chicago: IKEv2:IKEv2 responder - unsupported attrib unknown in cfg-req, 189072: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Error in settig received config mode data, 189073: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Auth exchange failed, 189074: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):: Auth exchange failed, 189075: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Abort exchange, 189076: *Aug 8 14:01:22.433 Chicago: IKEv2:(SESSION ID = 8673,SA ID = 1):Deleting SA, 189077: *Aug 8 14:01:25.429 Chicago: IKEv2:Couldn't find matching SA: Detected an invalid IKE SPI, 189078: *Aug 8 14:01:25.429 Chicago: IKEv2:(SESSION ID = 0,SA ID = 0):Received Packet [From 2.2.2.2:4500/To 1.1.1.1:4500/VRF i0:f0], 189079: *Aug 8 14:01:25.429 Chicago: IKEv2:: A supplied parameter is incorrect, 189080: *Aug 8 14:01:28.429 Chicago: IKEv2:Couldn't find matching SA: Detected an invalid IKE SPI, 189081: *Aug 8 14:01:28.429 Chicago: IKEv2:(SESSION ID = 0,SA ID = 0):Received Packet [From 2.2.2.2:4500/To 1.1.1.1:4500/VRF i0:f0], 189082: *Aug 8 14:01:28.429 Chicago: IKEv2:: A supplied parameter is incorrect, 189083: *Aug 8 14:01:31.433 Chicago: IKEv2:Couldn't find matching SA: Detected an invalid IKE SPI, 189084: *Aug 8 14:01:31.433 Chicago: IKEv2:(SESSION ID = 0,SA ID = 0):Received Packet [From 2.2.2.2:4500/To 1.1.1.1:4500/VRF i0:f0], 189085: *Aug 8 14:01:31.433 Chicago: IKEv2:: A supplied parameter is incorrect. Same here. Cisco recommends that you have knowledge of the packet exchange for IKEv2. IKEv2 is the supporting protocol for IP Security Protocol (IPsec) and is used for performing mutual authentication and establishing and maintaining security associations (SAs). Learn more about how Cisco is using Inclusive Language. Source Interface in my setup is the WAN Interface connected to the Internet. All but the headers of all the messages that follow are encrypted and authenticated. To a remote end configured with encryption domains i wasnt sucessfull. Update: This was a version error, using wrong version of anyconnect, this has now been resolved. Relevant Configuration:crypto ikev2 proposal PHASE1-prop encryption 3des aes-cbc-128 integrity sha1 group 2crypto ikev2 keyring KEYRNG peer peer1 address 10.0.0.2 255.255.255.0 hostname host1 pre-shared-key local cisco pre-shared-key remote cisco, *Nov 11 19:30:34.814: IKEv2:Got a packet from dispatcher *Nov 11 19:30:34.814: IKEv2:Processing an item off the pak queue *Nov 11 19:30:34.814: IKEv2:New ikev2 sa request admitted *Nov 11 19:30:34.814: IKEv2:Incrementing incoming negotiating sa count by one, *Nov 11 19:30:34.814: IKEv2:Next payload: SA, version: 2.0 Exchange type: IKE_SA_INIT, flags: INITIATOR Message id: 0, length: 344 Payload contents: SA Next payload: KE, reserved: 0x0, length: 56 last proposal: 0x0, reserved: 0x0, length: 52 Proposal: 1, Protocol id: IKE, SPI size: 0, #trans: 5 last transform: 0x3, reserved: 0x0: length: 8 type: 1, reserved: 0x0, id: 3DES 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 KE Next payload: N, reserved: 0x0, length: 136 DH group: 2, Reserved: 0x0 N Next payload: VID, reserved: 0x0, length: 24 *Nov 11 19:30:34.814: IKEv2:Parse Vendor Specific Payload: CISCO-DELETE-REASON VID Next payload: VID, reserved: 0x0, length: 23 *Nov 11 19:30:34.814: IKEv2:Parse Vendor Specific Payload: (CUSTOM) VID Next payload: NOTIFY, reserved: 0x0, length: 21 *Nov 11 19:30:34.814: 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 19:30:34.814: IKEv2:Parse Notify Payload: NAT_DETECTION_DESTINATION_IP NOTIFY(NAT_DETECTION_DESTINATION_IP) Next payload: NONE, reserved: 0x0, length: 28 Security protocol id: IKE, spi size: 0, type: NAT_DETECTION_DESTINATION_IP, *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: IDLE Event:EV_RECV_INIT *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event:EV_VERIFY_MSG *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event:EV_INSERT_SA *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event:EV_GET_IKE_POLICY *Nov 11 19:30:34.814: IKEv2:Adding Proposal default to toolkit policy *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event:EV_PROC_MSG *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event: EV_DETECT_NAT *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Process NAT discovery notify *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Processing nat detect src notify *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Remote address matched *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Processing nat detect dst notify *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Local address matched *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):No NAT found *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_INIT Event: EV_CHK_CONFIG_MODE *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_SET_POLICY *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Setting configured policies *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_CHK_AUTH4PKI *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_PKI_SESH_OPEN *Nov 11 19:30:34.814: IKEv2:(SA ID = 1):Opening a PKI session *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event:EV_GEN_DH_KEY *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_NO_EVENT *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event:EV_OK_RECD_DH_PUBKEY_RESP *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):Action: Action_Null *Nov 11 19:30:34.815: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event:EV_GEN_DH_SECRET *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_NO_EVENT *Nov 11 19:30:34.822: IKEv2:%Getting preshared key by address 10.0.0.1 *Nov 11 19:30:34.822: IKEv2:Adding Proposal default to toolkit policy *Nov 11 19:30:34.822: IKEv2:(2): Choosing IKE profile IKEV2-SETUP *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_OK_RECD_DH_SECRET_RESP *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):Action: Action_Null *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event:EV_GEN_SKEYID *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):Generate skeyid *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_GET_CONFIG_MODE *Nov 11 19:30:34.822: IKEv2:IKEv2 responder - no config data to send in IKE_SA_INIT exch *Nov 11 19:30:34.822: IKEv2:No config data to send to toolkit: *Nov 11 19:30:34.822: IKEv2:(SA ID = 1):SM Trace-> SA: I_SPI=F074D8BBD5A59F0B R_SPI=F94020DD8CB4B9C4 (R) MsgID = 00000000 CurState: R_BLD_INIT Event: EV_BLD_MSG *Nov 11 19:30:34.822: IKEv2:Construct Vendor Specific Payload: DELETE-REASON *Nov 11 19:30:34.822: IKEv2:Construct Vendor Specific Payload: (CUSTOM) *Nov 11 19:30:34.822: IKEv2:Construct Notify Payload: NAT_DETECTION_SOURCE_IP *Nov 11 19:30:34.822: IKEv2:Construct Notify Payload: NAT_DETECTION_DESTINATION_IP *Nov 11 19:30:34.822: IKEv2:Construct Notify Payload: HTTP_CERT_LOOKUP_SUPPORTED. Customers Also Viewed These Support Documents, https://www.cisco.com/c/en/us/support/docs/security/flexvpn/115907-config-flexvpn-wcca-00.html. If it guesses wrong, the CREATE_CHILD_SA exchange fails, and it must retry with a different KEi. First pair of messages is the IKE_SA_INIT exchange. I'd like to configure a IPSEC tunnel to Zscaler, the interface should be sourced from VPN0 so that i can use the public IP address attached to my DIA circuit. This module describes the Internet Key Exchange Version 2 (IKEv2) protocol. For more information, refer to IKEv2 Packet Exchange and Protocol Level Debugging. I've tried domain\user, [email protected] and just plain user. If the SA offers include different DH groups, KEi must be an element of the group the initiator expects the responder to accept. 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 Help would really be appreciated. Tunnel is up on the Initiator and the status shows. In addition, this document provides information on how to translate certain debug lines in a configuration. 2023 Cisco and/or its affiliates. It's in roadmap. The address range specifies that all traffic to and from that range is tunneled. #crypto ikev2 policy cisco. Responder initiates SA creation for that peer. Could you please clarify, as I'm waiting for this feature being available for some months now. #proposal cisco. Can you point specifically on the vManage how we can do that? Thanks again for this article. Uses certificates for the authentication mechanism. Find answers to your questions by entering keywords or phrases in the Search bar above. I notice the guide was written for the vEdge. Initiator building IKE_INIT_SA packet. The first CHILD_SA is created for the proxy_ID pair that matches the trigger packet. All traffic must be accepted and specific routing is needed to direct traffic into specific tunnels. In my case even after adding the ACL entry there was another step which was needed to fix this tunnel. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. If this CREATE_CHILD_SA exchange is not rekeying an existing SA, the N payload must be omitted. A vulnerability in the Internet Key Exchange Version 2 (IKEv2) implementation in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent IKEv2 from establishing new security associations. These messages negotiate cryptographic algorithms, exchange nonces, and do a Diffie-Hellman exchange. The link you shared is for a vEdge setup, the one I've found is for cEdge 16.12.x. IPSEC profile: this is phase2, we will create the transform set in here. I believe it is specific to ISR4K's and being fixed in the November code release. Router2 sends out the responder message to Router 1. IOS XE routers must source IPSEC interfaces from the Service side VPN (not VPN0), but also, it is necessary to add a inbound IPv4 ACL to the Interface in VPN0 to permit UDP 500 (IPSEC) and if using NAT UDP 4500 as well.After the tunnel is established you can add a IPv4 static route on the Service side with a next hop of the Tunnel interface to route traffic via the tunnel. 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.
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