NSE7_NST-7.2 Exam Dumps - Fortinet Certification Questions and Answers

Session Synchronization:

FortiGate HA (High Availability) ensures that active sessions are synchronized between the primary and secondary devices. This synchronization allows for seamless failover and continuity of sessions.

Handling NAT Sessions:

The session in the exhibit has NAT applied, as indicated by thehook=post dir=org act=snatentry. FortiGate's HA setup is designed to handle such sessions, ensuring that traffic continues without interruption during failover.

Session Preservation:

Even with the presence of NAT, the session state is preserved across the HA devices. This means that ongoing sessions do not require re-establishment by the client, thus providing a seamless experience.

References:

Fortinet Documentation: HA session synchronization and failover

Fortinet Community: Understanding session synchronization in FortiGate HA

Analyzing Debug Output:

The debug output shows multiple proposals with encryption algorithms likeAES CBCand hashing algorithms likeSHA256.

The negotiation failure (no SA proposal chosen) suggests that there is a mismatch in the encryption or hashing algorithms between the local and remote gateways.

Configuration Change:

To resolve the phase 1 negotiation error, the local gateway needs to include a compatible proposal.

AddingAES256-SHA256to the phase 1 proposal configuration ensures that both gateways have a matching set of encryption and hashing algorithms.

References:

Fortinet Documentation: Configuring IPsec Tunnels​(Fortinet Docs)​​(Welcome to the Fortinet Community!)​.

Fortinet Community: Troubleshooting IKE Negotiation Failures​(Welcome to the Fortinet Community!)​​(Welcome to the Fortinet Community!)​.