The logical interface contains an IP address that is used Your device must be able to bind the IPsec tunnel to a logical (Dynamically-routed VPN connections) Bind tunnel to logical Process, the alternate IPsec tunnel is used if possible. When this occurs, the gateways delete the securityĪssociations and attempt to create new associations. When a network condition prevents delivery of packets across the (Dynamically-routed VPN connections) Use IPsec Dead Peerĭead Peer Detection enables the VPN devices to rapidly identify IKE uses Diffie-Hellman to establish ephemeral keys to secure allĬommunication between customer gateway devices and virtual private Use Diffie-Hellman Perfect Forward Secrecy. This hashing function is used to authenticate both IKE and IPsec Use the SHA-1 or SHA-2 (256) hashing function The encryption function is used to ensure privacy for both IKE and Use the AES 128-bit encryption or AES 256-bit encryption On a regular basis to ensure confidentiality of The ephemeral keys used toĮncrypt traffic within the IPsec SA are automatically rotated by IKE Traffic between gateways isĮncrypted and decrypted using this SA. Virtual private gateway and the customer gateway device to form an Using the IKE ephemeral key, keys are established between the Policy-based configuration, you must limit your configuration to aĮstablish IPsec security associations in Tunnel mode The Site-to-Site VPN service is a route-based solution. The following versions are supported: IKEv1 and IKEv2. Information, about configuring VPN tunnels see Tunnel options for your Site-to-Site VPN connection. Using AWS Private Certificate Authority to use for your customer gateway device. Alternatively, you can specify the private certificate Own pre-shared key for each tunnel, or you can let AWS generate When you create a VPN connection in AWS, you can specify your The parameters, including encryption and authentication When established, IKE negotiates an ephemeral key to Pre-shared key or a private certificate that uses AWS Private Certificate Authority as theĪuthenticator. Virtual private gateway and the customer gateway device using a The IKE security association is established first between the VPN endpoints support rekey and can start renegotiations when phase 1 is about toĮxpire if the customer gateway device hasn't sent any renegotiation traffic. Information, see Site-to-Site VPN tunnel initiation options. To initiate the IKE negotiation from the AWS side of the connection instead. Is initiated from your side of the VPN connection. Therefore, you might need toĬonsolidate your rules and then filter so that you don't permit unwanted traffic.īy default, the VPN tunnel comes up when traffic is generated and the IKE negotiation Some devices useĪ policy-based VPN and create as many SAs as ACL entries. To one unique security association (SA) pair per tunnel (one inbound and one outbound),Īnd therefore two unique SA pairs in total for two tunnels (four SAs). Security association, an IPsec security association, and a BGP peering. Related RFC (for reference), and comments about the requirements.Įach VPN connection consists of two separate tunnels. The following table lists the requirements for the customer gateway device, the Use BGP, this exchanges routes between the customer gateway device (Optional) Border Gateway Protocol (BGP) peering. When youĬonfigure your customer gateway device, it's therefore important that you configure it Site-to-Site VPN tunnel endpoint replacements. Time to time, AWS also performs routine maintenance on the VPN connection, which mightīriefly disable one of the two tunnels of your VPN connection. If there's a device failure within AWS, your VPN connectionĪutomatically fails over to the second tunnel so that your access isn't interrupted. Lines between the customer gateway and virtual private gateway represent the tunnelsįor the VPN connection. The following diagram shows your network, the customer gateway device, and the VPNĬonnection that goes to the virtual private gateway that is attached to your VPC. Your network administrator must configure the device to work with the Site-to-Site VPN connection. You own or manage in your on-premises network (on your side of a Site-to-Site VPN connection). A customer gateway device is a physical or software appliance that
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