Exam FCP_FGT_AD-7.4 Topic 3 Question 58 Discussion
Actual exam question for Fortinet's FCP_FGT_AD-7.4 exam
Question #: 58
Topic #: 3
Question #: 58
Topic #: 3
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.)
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.)
Suggested Answer: C,D Vote an answer
To bring Phase 1 up, the following changes can be made:
A . On HQ-FortiGate, disable Diffie-Helman group 2: This is incorrect because Diffie-Hellman group 2 is already selected on both devices. Disabling it would not help.
B . On Remote-FortiGate, set port2 as Interface: This is incorrect as both sides should be consistent in their interface settings for the IPsec tunnel, and the interface is correctly set to port1 on both FortiGates in the IPsec configuration.
C . On both FortiGate devices, set Dead Peer Detection to On Demand: This is a valid option. Setting Dead Peer Detection (DPD) to "On Demand" helps maintain the IPsec connection by checking if the peer is still available, which can help in some cases where the connection fails due to timeouts.
D . On HQ-FortiGate, set IKE mode to Main (ID protection): This is also a valid option because the Remote-FortiGate is already set to Main mode (ID protection). Ensuring that both ends use the same mode is crucial for successful phase 1 negotiation.
Thus, the correct answers are:
C . On both FortiGate devices, set Dead Peer Detection to On Demand.
D . On HQ-FortiGate, set IKE mode to Main (ID protection).
A . On HQ-FortiGate, disable Diffie-Helman group 2: This is incorrect because Diffie-Hellman group 2 is already selected on both devices. Disabling it would not help.
B . On Remote-FortiGate, set port2 as Interface: This is incorrect as both sides should be consistent in their interface settings for the IPsec tunnel, and the interface is correctly set to port1 on both FortiGates in the IPsec configuration.
C . On both FortiGate devices, set Dead Peer Detection to On Demand: This is a valid option. Setting Dead Peer Detection (DPD) to "On Demand" helps maintain the IPsec connection by checking if the peer is still available, which can help in some cases where the connection fails due to timeouts.
D . On HQ-FortiGate, set IKE mode to Main (ID protection): This is also a valid option because the Remote-FortiGate is already set to Main mode (ID protection). Ensuring that both ends use the same mode is crucial for successful phase 1 negotiation.
Thus, the correct answers are:
C . On both FortiGate devices, set Dead Peer Detection to On Demand.
D . On HQ-FortiGate, set IKE mode to Main (ID protection).
by Sebastian at Feb 22, 2025, 10:46 AM
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