FORTINET-NSE7-SPECIALTY Practice Question: Nse7 SD Wan Security Profiles Routing And Ipsec
An administrator is configuring BGP over SD-WAN IPsec tunnels between a headquarters FortiGate and branch FortiGates. Which TWO configuration steps are required to ensure robust and stable dynamic routing over the SD-WAN IPsec tunnels? (Choose two)
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
✓
Configure BGP neighbors using the loopback interface IP addresses or tunnel specific IP addresses rather than physical interface IPs
Robust BGP over SD-WAN requires configuring the BGP router ID, setting up appropriate timers or neighbor relationships, and ensuring that the underlying SD-WAN members and IPsec tunnels allow routing protocol traffic. Additionally, managing BGP timers or enabling graceful restart helps maintain stability during brief IPsec reconnections.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set the BGP administrative distance to 255 to disable all routing updates
Why it's wrong here
An administrative distance of 255 makes routes unusable.
- ✓
Configure BGP neighbors using the loopback interface IP addresses or tunnel specific IP addresses rather than physical interface IPs
Why this is correct
Correct. Using loopback or tunnel specific IPs ensures BGP sessions remain stable even if underlying physical WAN interfaces flap, as long as an alternative path exists.
- ✓
Enable BGP graceful restart or adjust keepalive and holddown timers to accommodate potential latency spikes and failover delays on WAN links
Why this is correct
Correct. Adjusting BGP timers or enabling graceful restart prevents unnecessary session drops during short SD-WAN link failovers.
- ✗
Configure static default routes on all BGP neighbors pointing to the null0 interface
Why it's wrong here
Null0 static routes are used for blackholing, not for stabilizing BGP over SD-WAN.
- ✗
Disable IPsec phase 2 encryption to allow BGP plaintext hello packets to pass through without encapsulation overhead
Why it's wrong here
Disabling IPsec encryption compromises security and is not required or recommended for BGP over IPsec.
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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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Fortinet exam blueprint
This FORTINET-NSE7-SPECIALTY practice question is part of Courseiva's free Fortinet certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the FORTINET-NSE7-SPECIALTY exam.