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Question 79 - JN0-637 discussion

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Exhibit:

You have deployed a pair of SRX series devices in a multimode HA environment. You need to enable IPsec encryption on the interchassis link.

Referring to the exhibit, which three steps are required to enable ICL encryption? (Choose three.)

A.

Install the Junos IKE package on both nodes.

Answers
A.

Install the Junos IKE package on both nodes.

B.

Enable OSPF for both interchassis link interfaces and tum on the dynamic-neighbors parameter.

Answers
B.

Enable OSPF for both interchassis link interfaces and tum on the dynamic-neighbors parameter.

C.

Configure a VPN profile for the HA traffic and apply to both nodes.

Answers
C.

Configure a VPN profile for the HA traffic and apply to both nodes.

D.

Enable HA link encryption in the IPsec profile on both nodes.

Answers
D.

Enable HA link encryption in the IPsec profile on both nodes.

E.

Enable HA link encryption in the IKE profile on both nodes,

Answers
E.

Enable HA link encryption in the IKE profile on both nodes,

Suggested answer: A, C, D

Explanation:

A . Install the Junos IKE package on both nodes. While I previously stated that IKE is usually included in the base Junos OS image, it's essential to ensure that the necessary IKE package is indeed installed and enabled on both SRX nodes to support ICL encryption.

C . Configure a VPN profile for the HA traffic and apply it to both nodes. This dedicated VPN profile defines the security parameters (encryption algorithms, authentication, etc.) specifically for the ICL traffic.

D . Enable HA link encryption in the IPsec profile on both nodes. Within the IPsec profile, you must explicitly enable ICL encryption to ensure that all traffic traversing the interchassis link is protected.

Why E is incorrect:

E . Enable HA link encryption in the IKE profile on both nodes. While securing IKE negotiations is important, it's typically handled within the IPsec profile itself when configuring ICL encryption on SRX devices.

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asked 01/11/2024
Opeyemi Alabi
39 questions
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