PCNSE Secure Access and VPN Practice Question
During a security audit, it is discovered that the GlobalProtect gateway allows clients to use weak encryption algorithms. Which configuration object controls this?
⚠ Common exam trap
Many exam-takers confuse the SSL/TLS service profile (used for portal/management encryption) with the IPSec crypto profile (which actually controls the VPN tunnel encryption between GlobalProtect clients and the gateway).
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
✓
The IPSec crypto profile associated with the gateway.
The GlobalProtect gateway uses IPSec to secure VPN tunnels between clients and the gateway. The IPSec crypto profile defines the encryption algorithms, authentication methods, and key exchange parameters for these tunnels. If weak encryption algorithms are allowed, it is because the IPSec crypto profile associated with the gateway is configured with those weak options.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The SSL/TLS service profile on the gateway.
Why it's wrong here
Incorrect. SSL profile controls web interface encryption, not IPSec data encryption.
- ✓
The IPSec crypto profile associated with the gateway.
Why this is correct
Correct. Crypto profile defines algorithms for data encryption.
- ✗
The GlobalProtect portal agent configuration.
Why it's wrong here
Incorrect. Portal agent handles client software settings, not encryption algorithms.
- ✗
The SSL/SSH service profile on the firewall.
Why it's wrong here
Incorrect. This profile controls management access encryption.
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 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.