This SSCP practice question tests your understanding of network and communications security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 security administrator is configuring a firewall to allow HTTPS traffic from the internet to a web server. Which default port must be permitted?
8443
Why wrong: Port 8443 may be used for HTTPS in some configurations but is not the default.
8080
Why wrong: Port 8080 is often used as an HTTP alternative, not for HTTPS.
443
HTTPS utilizes port 443 as its default port for secure communications.
80
Why wrong: Port 80 is used for HTTP, not HTTPS.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
443
HTTPS uses port 443 by default. Port 80 is HTTP, 8080 is common HTTP alternative, and 8443 is HTTPS alternative but not default.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SSCP NAT questions on configuration and troubleshooting.
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FAQ
Network and Communications Security — This question tests Network and Communications Security — Static NAT maps one inside address to one outside address..
The correct answer is: 443 — HTTPS uses port 443 by default. Port 80 is HTTP, 8080 is common HTTP alternative, and 8443 is HTTPS alternative but not default.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SSCP NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 24, 2026
This SSCP practice question is part of Courseiva's free ISC2 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 SSCP exam.
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