156-315-82: Check Point Certified Security Expert R82 (CCSE)

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QuestionQ14

Site-to-Site VPN

When establishing a tunnel, IKEv2 uses two exchange types: IKE_SA_INIT and IKE_AUTH. How many packets are exchanged between the VPN peer gateways during these two exchanges?

Explanation

IKEv2 communication uses request/response pairs. IKE_SA_INIT comprises one request and one response, and IKE_AUTH likewise comprises one request and one response, for a total of four packets in the normal initial exchange sequence.

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