Refer to the exhibit. A network administrator is troubleshooting an IPsec tunnel between two FortiGate devices. The administrator has determined that phase 1 failed to come up. The administrator has also re-entered the pre-shared key on both FortiGate devices to make sure they match. Based on the phase 1 configuration and the diagram shown in the exhibit, which two configuration changes can the administrator make to bring phase 1 up? (Choose two answers)

• A. On HQ-NGFW, set IKE mode to Main (ID protection).
• B. On both FortiGate devices, set Dead Peer Detection to On Demand.
• C. On BR1-FGT, set port2 to Interface.
• D. On HQ-NGFW, disable Diffie-Hellman group 2.

Correct Answer: A,C

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