Customers often have to learn different types of VPNs to manage and operate different types of network. And once a technology is selected for a deployment, migrating or adding functionality to enhance the VPN is often avoided.
FlexVPN was created to simplify the deployment of VPNs, to address the complexity of multiple solutions, and as a unified ecosystem to cover all types of VPN: remote access, teleworker, site to site, mobility, managed security services, and others. See Figure 1. As customer networks increase spans over private, public, and cloud systems, unifying the VPN technology becomes essential, and it became more important to address the need for simplification of design and configuration.
FlexVPN is a robust, standards-based encryption technology that helps enable large organizations to securely connect branch offices and remote users and provides significant cost savings compared to supporting multiple separate types of VPN solutions such as GRE, Crypto, and VTI-based solutions. Table 1. Platform Support. Platforms Supported. Cisco Series Routers.
Cisco86X nonwireless,88X, and 89X. Cisco Series Integrated Services Routers. Ciscoand W. Cisco,and Cisco Series Integrated Service Routers. Cisco, E, and E. Cisco ASR , and Cisco X. Skip to content Skip to footer. Available Languages. Download Options. Updated: January 1, Figure 1. Contact Cisco Chat with Sales. Cisco: Welcome to Cisco! How can I help you? Was this Document Helpful? Yes No Feedback.Security threats, as well as cryptographic technologies to help protect against such threats, are constantly changing.
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www. An account on Cisco. Use the vrf forwarding vrf-name command to define the IVRF of the tunnel interface, where the vrf-name argument is defined using the vrf definition command with IPv4 and IPv6 address families inside the definition.
The EAP identity queried from the client when the query-identity keyword is configured. The configuration information is obtained from IKEv2 authorization.
Configuration Examples and TechNotes
Both pull and push models are supported. The pull model involves the exchange of configuration requests and replies; the push model involves the exchange of configuration sets and acknowledgements. The following table describes the conditions when the initiator and the responder send different configuration payload types:. Initiator—The config-exchange set send command is enabled in the IKEv2 profile.
Initiator—The config-exchange set accept command is enabled in the IKEv2 profile. Responder—The config-exchange set accept command is enabled in the IKEv2 profile. The commands to send configuration requests and configuration set payloads are enabled by default. Depending on your release, the IKEv2 initiator can trigger a configuration mode when the initiator is a FlexVPN client, or any static tunnel interface initiating IKEv2 can trigger configuration mode by enabling the config-mode command in the IKEv2 profile.
However, if an error occurs when allocating IP addresses from the local pool, the next address source DHCP server is not used for allocating the addresses. An IPv4 address is allocated and included in the reply only if the client requests an address.VRFs can be used on a router acting as a VPN gateway in order to isolate the routing tables of encrypted and cleartext traffic.
As default when not using VRFs all routes are within the global routing table. In this blogpost scenario the Hub and Spoke routers will be configured as follows This post does not cover the full configuration of FlexVPN, refer to the previous blog posts for more information Any connection authorized will receive the configuration in either of the policies.
The loopback interfaces are used for the Underlay, Tunnel source interface and to simulate networks in the respective VRF. Unique certificates on the spoke router s are used on the Hub router to distinguish the different VRF and assign the appropriate configuration. Enrollment of certificates for use with FlexVPN is covered elsewhere on this site; refer to the posts listed above. The Authorization Policies configured on the spoke are used to send routes to the hub, which in turn will be installed in the correct VRFs routing table on the hub.
In this instance on the Spoke router the name-mangler is not required, so therefore the name of the IKEv2 Authorization Policy does not matter, a static Authorization Policy is defined. The only shared configuration value between the Tunnel interfaces will be the tunnel vrf WAN.
Using the command show crypto ikev2 sa detailedwe can determine Confirm the correct configuration of the certificates is important as it will ultimately determine which VRF belongs to each tunnel.
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Learn how your comment data is processed. Skip to content. RSA Certificates will be used for authentication. Rate this:. Like this: Like LoadingIn this implementation, VRFs are used to segment a private physical infrastructure into virtual, isolated networks. VRF-lite provides traffic isolation by using input interfaces to distinguish routes for different VLANs and forms virtual packet-forwarding tables by associating one or more Layer 3 interfaces with each VRF.
Note VRF-lite interfaces must be Layer 3 interfaces. Figure 1 VRF-lite Example.
FlexVPN and Internet Key Exchange Version 2 Configuration Guide, Cisco IOS XE Release 3S
A VRF-aware service uses a VRF table rather than the global routing table for routing traffic associated with the service. VRF-aware services are implemented in platform-independent modules.
Each platform has its own limit on the number of VRFs it supports. Ping is another example of a VRF-aware service.
You can ping a host in a user-specified VRF. If no commands have yet been entered to specify a VRF, the system's default configuration is as follows:.
No import maps, export maps, or route maps are defined. The default for an interface is the global routing table. To activate the single-protocol VRF on an interface, you entered the ip vrf forwarding interface configuration command.
To activate the multiprotocol VRF on an interface, you enter the vrf forwarding command. This VRF can be activated on a given interface, even though the routing and forwarding tables are different for the IPv4 and IPv6 protocols.
The procedure and examples in this document use the multiprotocol CLI. This command is mandatory for IPv6 routing; IPv4 routing is enabled by default. Optional Creates a VRF table by specifying a route distinguisher.
Enter either an Autonomous System number and an arbitrary number xxx:y or an IP address and arbitrary number A. Optional IPv4 by default. Optional Creates a list of import, export, or import and export route target communities for the specified VRF.
Enter either an AS system number and an arbitrary number xxx:y or an IP address and an arbitrary number A. Optional Saves your entries in the configuration file. Use the no vrf definition vrf-name global configuration command to delete a VRF and to remove all interfaces from it. Use the no vrf forwarding interface configuration command to remove an interface from the VRF.
Displays information about the defined VRF instances. Displays routing protocol information associated with a VRF. Displays the routing protocol information associated with a VRF. The RSS feeds are a free service.Refer to the previous posts for additional FlexVPN information AAA must be enabled and a method list for network authorization defined, this will be referenced in the IKEv2 Profile.
To demonstrate some of the attributes that can be pushed to a client connection, different settings will be applied to the individual AAA Attribute Lists to help confirm the settings are applied correctly. We can also confirm the OU value and the IP address assigned to the client.
Running the command show derived-config interface virtual-access1 will confirm the attributes have been applied successfully to the Virtual Access interface on the Hub. Like Like. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account.
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All of the devices used in this document started with a cleared default configuration. If your network is live, make sure that you understand the potential impact of any command. Refer to the Cisco Technical Tips Conventions for more information on document conventions. In this section, you are presented with the information to configure the features described in this document. If the virtual access interface is cloned from the virtual template, and the ip vrf forwarding command is then applied, any IP configuration is removed from the virtual access interface.
Although the tunnel is established, the CEF adjacency for the point-to-point P2P interface is incomplete. This is an example of the show adjacency command with an incomplete result:.
Use this section to confirm that your configuration works properly. Verify that the virtual access interface created is cloned correctly from the virtual template interface and has applied all the per-user attributes downloaded from the RADIUS server:.
Contents Introduction.It uses a common configuration template for all VPN types. IKEv2 uses stateless anti-clogging cookies, which is used for protection of DoS attacks from spoofed source addresses. The responder will limit resources until the initiator responses with the correct cookie ID. The anti-clogging cookies are optional Anti-DoS mechanism. Like Like. Refer to this post for information about IKEv2 smart defaults […]. Like Liked by 1 person. You are commenting using your WordPress.
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Skip to content. Only 2 packets in the exchange, but will be repeated for every re-key or new SA. Unlike IKEv1 this can be asymmetric, one key for the local router and another for the remote router. Rate this:.How to get out of coloros recovery oppo
IKEv2 Keyring. Mandatory only if using PSK authentication Used to define the pre-shared keys. IKEv2 Profile. IPSec Transform Set.
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