Often, IPSec VPN Phase-1 fails to come up, even when all the proposals are the same on both sides of the tunnel. Even the tunnel gateways are reachable. On configuring ike traceoptions by using the following command:

Feb 05, 2016 · SENDING>>>> ISAKMP OAK INFO (InitCookie:0xda0cc4687a97cdec RespCookie:0xd0436e5e93c53289, MsgID: 0xCBE325C5) *(HASH, NOTIFY: NO_PROPOSAL_CHOSEN) 0588VPNWarningIKE Responder: IPsec proposal does not match (Phase 2) VPNWarningIKE Responder: Peer's proposed network does not match VPN Policy's Network based on log : Peer sent NO_PROPOSAL_CHOSEN notify You can get detailed information from the Scrubbed-wfpdiag.txt about the error, as in this case it mentions that there was ERROR_IPSEC_IKE_POLICY_MATCH that lead to connection not working properly. IKE.009: Receive notification data from 198.51.100.200, type 14:NO-PROPOSAL-CHOSEN, protocol ISAKMP ==> NO-PROPOSAL-CHOSEN : 始動者が送信したプロポーザルに応答者が対応していないことを示しています。 If you have an “NO PROPOSAL CHOSEN” error, check that the “Phase 2” encryption algorithms are the same on each side of the VPN Tunnel. Check “Phase 1” algorithms if you have this: 115911 Default (SA CNXVPN1-P1) SEND phase 1 Main Mode [SA][VID] 115911 Default RECV Informational [NOTIFY] with NO_PROPOSAL_CHOSEN error Select the New Phase 2 Proposal icon adjacent to the Proposal drop-down list. In the Phase 2 Proposal dialog box, below Force Key Expiration, you can select to force keys to expire and renegotiate based on time or amount of data passing through the VPN tunnel. Change the value 128,000 Kilobytes to 8192 Kilobytes. With this new value, a new key Aug 06, 2019 · In this case, the initiator receives a message that the responder could not find a suitable proposal (“received NO_PROPOSAL_CHOSEN”), and from the responder logs it is obvious this was due to the sites being set for different encryption types, AES 128 on one side and AES 256 on the other. 2. There is a comms error, check there’s no router with firewall capabilities in the link. 3. I’ve seen this on a VPN from a VMware Edge Gateway, that had PFS (perfect forward secrecy) enabled, and the ASA did not. Also see: Cisco ASA VPN to Cisco Router “MM_WAIT_MSG3” MM_WAIT_MSG5. Make sure the Pre-Shared Keys Match

Scenario 7: Site to site with DAIP Gateway fail with "No Proposal Chosen" sent by the central Gateway. Product: IPSec VPN, Symptoms: Site to site with DAIP Gateway fail with "No Proposal Chosen" sent by the central Gateway; SHA384 is defined as Data Integrity for Main Mode. One of the peers defined as Dynamic IP Gateway and installed with R77

The remote address of the VPN is not listed in the output of the show security ike security-associations command. Solution: The VPN messages described in this article are shown in the syslog files. You can troubleshoot IPSec VPN tunnel connectivity issues by running IPSec configuration commands from the NSX Edge CLI. You can also use the vSphere Web Client and the NSX Data Center for vSphere REST APIs to determine the causes of tunnel failure and view the tunnel failure messages. no SA proposal chosen means that the security association doesn't match on both sides. Maybe a keylife time in one side is 86400 and in the other side is 86400. You should post IKE phase 1 and phase2 from each fortigate. receiving <<< isakmp oak info *(hash, notify:no_proposal_chosen) from x.x.x.x 1344 21:17:30.812 09/22/08 Sev=Info/4 IKE/0x63000013 SENDING >>> ISAKMP OAK INFO *(HASH, DEL) to x.x.x.x

IPSEC tunnel problem : no SA proposal chosen hello, i have a problem with a site-to-site VPN i'm currently on fortigate VM-64 (Firmware Versionv5.0,build3608 (GA Patch 7)) the other end is a livebox pro (from france), which is emulating a cisco router this is what i have in the logs on fortigate :

If you have an “NO PROPOSAL CHOSEN” error, check that the “Phase 2” encryption algorithms are the same on each side of the VPN Tunnel. Check “Phase 1” algorithms if you have this: 115911 Default (SA CNXVPN1-P1) SEND phase 1 Main Mode [SA][VID] 115911 Default RECV Informational [NOTIFY] with NO_PROPOSAL_CHOSEN error Select the New Phase 2 Proposal icon adjacent to the Proposal drop-down list. In the Phase 2 Proposal dialog box, below Force Key Expiration, you can select to force keys to expire and renegotiate based on time or amount of data passing through the VPN tunnel. Change the value 128,000 Kilobytes to 8192 Kilobytes. With this new value, a new key Aug 06, 2019 · In this case, the initiator receives a message that the responder could not find a suitable proposal (“received NO_PROPOSAL_CHOSEN”), and from the responder logs it is obvious this was due to the sites being set for different encryption types, AES 128 on one side and AES 256 on the other. 2. There is a comms error, check there’s no router with firewall capabilities in the link. 3. I’ve seen this on a VPN from a VMware Edge Gateway, that had PFS (perfect forward secrecy) enabled, and the ASA did not. Also see: Cisco ASA VPN to Cisco Router “MM_WAIT_MSG3” MM_WAIT_MSG5. Make sure the Pre-Shared Keys Match When connecting as a Meraki Client VPN, it only supports protocols that have been removed from the Strongswan default protocol negotiation list (because the SWEET32 birthday attack is possible against some of these protocols) so you have to specify them explicitly (as you have). Common Errors¶. The following examples have logs edited for brevity but significant messages remain. Logging for IPsec is configured at VPN > IPsec, Advanced Settings tab. . The most useful logging settings for diagnosing tunnel issues with strongSwan on pfSense® software version 2.2.x No Proposal Chosen: 14 I have configured st0.1 to share a physical interface gateway and have placed st0.1 into the Customer-VR and the Customer secuirty Zone and configured it as follows: set interfaces st0 unit 1 family inet