![]() The initiator is the FlexVPN client or if theĬonfig-exchange request command is enabled in the IKEv2 profile.Ĭonfig-exchange set send command is enabled in the IKEv2 profile. The following table describes the conditions when the initiator and the responder send different configuration payload types: The pull model involves the exchange of configuration requests and replies the push model involves the exchange of configuration sets and acknowledgements. The configuration information is obtained from IKEv2 authorization. IKEv2 configuration mode allows IKE peers to exchange configuration information such as IP addresses and routes. IKEv2 Exchange with the query-identity Keyword IKEv2 Configuration Mode The figure below shows the IKEv2 exchange for EAP authentication with theįigure 2. IKEv2 Exchange Without the query-identity Keyword ![]() ![]() The figure below shows IKEv2 exchange for EAP authentication without theįigure 1. The FlexVPN client IKEv2 identity used as the EAP identity. The EAP identity queried from the client when the The EAP identity provided by the EAP server with the EAP success message. If the authentication succeeds, the EAP server is expected to return the authenticated EAP identity to the FlexVPN server in the EAP success message.Īfter EAP authentication, the EAP identity used for the IKEv2 configuration is obtained from the following sources in the given order: The FlexVPN server starts the EAP authentication by passing the FlexVPN client’s EAP identity to the EAP server the FlexVPN server then relays EAP messages between the remote access (RA) client and the EAP server until the authentication is complete. Query-identity keyword is not configured and the FlexVPN client’s IKEv2 identity is an IPv4 or IPv6 address, the session is terminated because IP addresses cannot be used as the EAP identity. Query-identity keyword is configured, the FlexVPN server queries the EAP identity from the client otherwise, the FlexVPN client’s IKEv2 identity is used as the EAP identity. FlexVPN clients authenticate using EAP by skipping the AUTH payload in the IKE_AUTH request. The FlexVPN server is configured to authenticate FlexVPN clients that use EAP by configuring theĪuthentication remote eap command in IKEv2 profile configuration mode. While a FlexVPN client authenticates the FlexVPN client using EAP, the FlexVPN server must authenticate the FlexVPN server by using certificates. ![]() The backend EAP server is typically a RADIUS server that supports EAP authentication. The FlexVPN server supports peer authentication using the Extensible Authentication protocol (EAP) and acts as a pass-through authenticator relaying EAP messages between the client and the backend EAP server. Information About the FlexVPN Server Peer Authentication Using EAP Vrf definition command with IPv4 and IPv6 address families inside the definition. Vrf forwarding vrf-name command to define the IVRF of the tunnel interface, where the Ip vrf forwarding command to configure an Inside VPN routing and forwarding (IVRF) instance because this is not a valid configuration. When configuring a dual-stack tunnel interface in a VPN routing and forwarding (VRF)-aware IPsec scenario, you cannot use the Restrictions for the FlexVPN Server Dual-Stack Tunnel Interface and VRF-Aware IPsec Navigator to find information about platform support and Cisco software image Which each feature is supported, see the feature information table. The features documented in this module, and to see a list of the releases in Release notes for your platform and software release. May not support all the features documented in this module. Next Generation Encryption (NGE) white paper. For more information about the latest Cisco cryptographic recommendations, see the Security threats, as well as cryptographic technologies to help protect against such threats, are constantly changing. This module describes FlexVPN server features, IKEv2 commands required to configure the FlexVPN server, remote access clients, and the supported RADIUS attributes.
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