- A
SSL VPN (clientless)
Clientless SSL VPN allows users to access web applications via a browser without installing software.
- B
GlobalProtect with pre-logon
Why wrong: GlobalProtect requires the client software.
- C
IPSec VPN
Why wrong: IPSec requires a client or firewall configuration on both ends.
- D
L2TP over IPSec
Why wrong: L2TP also requires client software and is built into some operating systems but not browser-only.
Question 330 of 516
SSL VPN Clientless Access for External Partners
This PCNSE practice question tests your understanding of secure access and vpn. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company wants to provide VPN access to external business partners who do not have the GlobalProtect client installed. Which VPN method should be used?
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
✓
SSL VPN (clientless)
SSL VPN (clientless) is correct because it allows external business partners to access specific web-based applications or internal resources through a standard web browser without requiring any client software installation. This method uses HTTPS and SSL/TLS to encrypt the session, making it ideal for scenarios where the remote user cannot or will not install the GlobalProtect client.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
SSL VPN (clientless)
- ✗
GlobalProtect with pre-logon
Why it's wrong here
GlobalProtect requires the client software.
- ✗
IPSec VPN
- ✗
L2TP over IPSec
Why it's wrong here
L2TP also requires client software and is built into some operating systems but not browser-only.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse SSL VPN (clientless) with SSL VPN (full tunnel using GlobalProtect), assuming any SSL VPN requires a client, but clientless mode specifically eliminates that requirement.
Detailed technical explanation
How to think about this question
Clientless SSL VPN works by proxying HTTP/HTTPS traffic through the firewall, rewriting URLs and embedding application content into a web portal. It supports application-level access via reverse proxy, port forwarding, or smart tunnel plugins, but does not provide full network-layer access like an IPsec tunnel. In real-world deployments, this is often used for partner portals where only a few web applications (e.g., SharePoint, CRM) need to be exposed, and the firewall enforces granular access control per URL or file type.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the PCNSE exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this PCNSE question test?
Secure Access and VPN — This question tests Secure Access and VPN — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: SSL VPN (clientless) — SSL VPN (clientless) is correct because it allows external business partners to access specific web-based applications or internal resources through a standard web browser without requiring any client software installation. This method uses HTTPS and SSL/TLS to encrypt the session, making it ideal for scenarios where the remote user cannot or will not install the GlobalProtect client.
What should I do if I get this PCNSE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jul 4, 2026
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.
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