NSE7 Advanced VPN and Zero Trust Practice Question
A FortiGate administrator needs to configure a hub-and-spoke ADVPN with OSPF as the routing protocol over the VPN tunnels. Which TWO steps are required on the hub FortiGate to enable shortcut tunnels?
⚠ Common exam trap
Candidates often confuse the roles of 'auto-discovery-sender' and 'auto-discovery-receiver', mistakenly enabling the receiver on the hub instead of the sender, which would prevent the hub from initiating shortcut offers to spokes.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable 'shortcut' option under the phase2 configuration.
Enabling the 'shortcut' option under the phase2 configuration on the hub FortiGate allows the hub to advertise shortcut tunnel capabilities to spoke devices. This is essential for establishing direct spoke-to-spoke tunnels in an ADVPN setup, as it triggers the dynamic negotiation of shortcut paths when traffic patterns warrant them.
Visual reference
Quick reference
VPN Protocol Comparison
| Protocol | Port | Encryption | Authentication | Use Case |
|---|---|---|---|---|
| IKEv2 / IPsec | UDP 500 / 4500 | AES-256 | Certificates / PSK | Site-to-site & remote access |
| SSL / TLS VPN | TCP 443 | TLS 1.3 | Certificates / MFA | Clientless remote access |
| L2TP / IPsec | UDP 1701 | AES (IPsec) | PSK / Certificates | Legacy remote access |
| WireGuard | UDP 51820 | ChaCha20 | Public keys | Modern high-performance VPN |
| PPTP | TCP 1723 | MPPE (weak) | MS-CHAPv2 | Legacy — avoid in production |
PPTP is considered insecure. IKEv2/IPsec and SSL VPN are the current recommended options.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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