NSE7 Advanced VPN and Zero Trust Practice Question
A company uses SSL VPN with FortiGate for remote access. Users report that after connecting, they can access internal web servers but cannot ping them. Which configuration is most likely missing?
⚠ Common exam trap
It's easy for candidates to assume split tunneling or DNS is the cause, but the real issue is that ICMP is a separate protocol that must be explicitly permitted in the firewall policy, unlike TCP-based web traffic.
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
✓
Firewall policy allowing ICMP
SSL VPN tunnels typically allow TCP-based traffic like HTTP/HTTPS to internal web servers, but ICMP (ping) is a separate protocol that requires explicit permission in the firewall policy. Without a firewall policy rule permitting ICMP from the SSL VPN interface to the internal network, the FortiGate will drop the ping requests, even though the tunnel is established and other traffic flows.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Split tunneling settings
Why it's wrong here
Split tunneling affects which traffic goes through the tunnel, but does not block ICMP specifically.
- ✗
SSL VPN web portal settings
Why it's wrong here
Web portal settings are for web-mode access, not tunnel-mode policies.
- ✓
Firewall policy allowing ICMP
Why this is correct
The firewall policy for SSL VPN traffic must permit ICMP protocol in addition to TCP/80 and TCP/443.
- ✗
DNS server configuration
Why it's wrong here
DNS server is for name resolution, not for ICMP traffic.
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 by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This NSE7 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 NSE7 exam.