The D is correct
Phase I modes
Between Security Gateways, there are two modes for IKE phase I. These modes only apply to IKEv1:
Main Mode
Aggressive Mode
If aggressive mode is not selected, the Security Gateway defaults to main mode, performing the IKE negotiation with six packets; aggressive mode performs the IKE negotiation with three packets.
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jlucio
6 months, 1 week ago