![]() Phase 1 is up\ Remote peer reports INVALID_ID_INFORMATION If they match, check the remote firewall logs for the cause.Make sure the phase 2 settings for encryption and authentication algorithms and DH group match on both firewalls.The remote firewall shows the following error message: NO_PROPOSAL_CHOSEN Phase 1 is up\ Initiating establishment of Phase 2 SA\ Remote peer reports no match on the acceptable proposals Remote peer reports no match on the acceptable proposals Make sure the WAN interface's MTU and MSS settings match the values given by the ISP.If the preshared key matches, verify with the ISP or on the upstream devices if they've corrupted the packet.Make sure the preshared key matches in the VPN configuration on both firewalls.Rarely, the ISP or an upstream appliance, such as a router or another firewall, may corrupt the packet. Update the local and remote ID types and IDs with matching values on both firewalls.Įrror on decryption of the exchange\ Information field of the IKE request is malformed or not readableĬause: The cause is likely to be a preshared key mismatch between the two firewalls.Check the logs on the remote firewall to make sure the mismatch of ID types has resulted in the error.Example: You've configured the local firewall's IPsec connection with Local ID set to IP address, but the remote firewall is configured to expect a DNS name. Remote peer reports we failed to authenticateĬause: The remote firewall couldn't authenticate the local request because the ID types don't match. We have successfully exchanged Encryption and Authentication algorithms, we are now negotiating the Phase 1 SA encryption (hashing) key The strongSwan log shows the following messages: If all the settings match, the remote firewall administrator must check the configuration at their end since the remote firewall has refused the connection.Gateway address: The peer gateway address you've entered on the local firewall matches the listening interface in the remote configuration.Phase 1: Encryption, authentication, and DH group.Make sure the VPN configuration on both firewalls has the same settings for the following:.The strongSwan log shows the following error message: Remote peer is refusing our Phase 1 proposalsĬause: Mismatched phase 1 proposals between the two peers. Open the following log file: /log/strongswan.log Remote peer refuses Phase 1 proposal This page helps with troubleshooting errors that relate to this error message: IPsec connection could not be established dgd.log: Dead Gateway Detection (DGD) and VPN failover log.strongswan-monitor.log: IPsec daemon monitoring log.charon.log: IPsec VPN charon (IKE daemon) log.Sophos Firewall uses the following files in /log to trace the IPsec events: Troubleshooting site-to-site IPsec VPN Dec 9, 2022Ĭommon configuration errors that prevent Sophos Firewall devices from establishing site-to-site IPsec VPN connections.
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