How To’s – Deploy DMVPN Phase 3 with IKEv2

How To’s – Deploy DMVPN Phase 3 with IKEv2

Silésio Carvalho Silésio Carvalho

Silésio Carvalho

Network & Security Architect | .?|?.?|?. CCIE EI #65745

发布日期: 2021年11月1日
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Hi there, in this post will see how to secure DMVPN with IKEv2.

When compared to IKEv1 the big difference is how we authenticate the peers in IKE Phase 1. Without diving to deep into IKEv2 (we'll see more on FlexVPN), let’s just say that it is IKEv1 with steroids :-). A good use case for using IKEv2 instead of IKEv1, would be if each spoke required a different policy to secure the tunnels. We can configure the hub with a single tunnel, and make it accept the different policies proposed by the spokes.

These are the parameters we have to configure for IKEv2:

  • IKEv2 Proposal - where we define hash, authentication, encryption, diffie-helman
  • IKEv2 Policy - references IKEv2 proposal
  • IKEv2 Keyring - identity of peers/spokes and authentication parameters
  • IKEv2 Profile - references IKEv2 keyring

NewYork - Hub

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London

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Dublin

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Brussels

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Let's check DMVPN tunnel on the Hub

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Encryption is UP for all the spokes

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Testing reachability from PC2 (London) packets are delivered "successfully (kind off...)".

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I hope you enjoyed this post, leave your comments below and I'll see you on the next one.


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