PCNSE Secure Access and VPN Practice Question
Which TWO are required for a GlobalProtect gateway to establish an IPSec tunnel with a remote client?
⚠ Common exam trap
Test-takers frequently confuse the GlobalProtect portal configuration as a prerequisite for the IPSec tunnel, but the portal is only needed for client configuration and certificate provisioning, not for the actual tunnel establishment between the gateway and the remote client.
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
✓
Tunnel interface
A tunnel interface is required on the firewall to terminate the IPSec tunnel from the remote GlobalProtect client. The tunnel interface serves as the logical endpoint for the encrypted traffic, allowing the firewall to apply security policies and route decrypted traffic appropriately. Without a tunnel interface, the IPSec security associations cannot be mapped to a virtual interface for traffic processing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Client certificate
Why it's wrong here
Certificates are optional; pre-shared key can be used.
- ✗
Security zone for the tunnel interface
Why it's wrong here
A security zone is needed for policy enforcement but not for tunnel establishment.
- ✓
Tunnel interface
Why this is correct
The tunnel interface is the endpoint for the VPN traffic.
- ✗
GlobalProtect portal configuration
Why it's wrong here
The portal is used for authentication and client configuration, but not for the tunnel itself.
- ✓
IKE gateway configuration
Why this is correct
The IKE gateway defines the parameters for the IPSec tunnel.
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.
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PCNSE practice question is part of Courseiva's free Palo Alto Networks 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 PCNSE exam.