NetSec-Architect Practice Question: Multi Cloud And Hybrid Network Security Architecture
You are configuring AWS Gateway Load Balancer (GWLB) with VM-Series firewalls to inspect inbound and outbound traffic. How does the GWLB encapsulate traffic between the AWS geneva/GENEVE-enabled endpoints and the VM-Series firewalls?
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
✓
GENEVE encapsulation with UDP port 6081
AWS GWLB uses the GENEVE protocol encapsulation to forward packets transparently to virtual appliances while preserving original packet headers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
GRE tunneling with protocol number 47
Why it's wrong here
GRE is not the encapsulation mechanism utilized by AWS Gateway Load Balancer.
- ✗
IPsec VPN tunnels with ESP transport mode
Why it's wrong here
IPsec is not used for GWLB encapsulation to virtual appliances.
- ✗
VXLAN encapsulation with UDP port 4789
Why it's wrong here
While VXLAN is used in some SDN environments, AWS GWLB specifically utilizes the GENEVE protocol.
- ✓
GENEVE encapsulation with UDP port 6081
Why this is correct
GWLB uses GENEVE encapsulation over UDP port 6081 to wrap packets before sending them to the security appliances.
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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 Palo Alto Networks exam blueprint
This NetSec-Architect 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 NetSec-Architect exam.