FORTINET-NSE123 Practice Question: Nse 2 Technical Introduction TO Fortinet Security
When configuring an SSL VPN tunnel mode connection for mobile workers, what does the FortiGate assign to the client machine to enable communication with internal subnets?
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
✓
A virtual IP address from a configured SSL VPN IP pool
In SSL VPN tunnel mode, the FortiGate assigns a virtual IP address from a dedicated IP pool to the client virtual adapter.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
A virtual IP address from a configured SSL VPN IP pool
Why this is correct
Tunnel mode assigns a virtual IP address so clients can route traffic securely.
- ✗
A static public IP address belonging to the ISP WAN interface
Why it's wrong here
Public IPs are reserved for WAN gateways, not internal client VPN allocation.
- ✗
A physical MAC address mapped to the switch port
Why it's wrong here
VPN tunnels operate at Layer 3/transport layers and assign logical IP addresses, not physical MACs.
- ✗
A dynamic DNS hostname managed by FortiGuard
Why it's wrong here
Dynamic DNS is used to resolve remote gateway public IPs, not client IP assignment.
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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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-NSE123 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-NSE123 exam.