mediumMultiple ChoiceObjective-mapped
CCSP Practice Question: Refer to the exhibit
Exhibit
Security Group Rule Analysis: Rule 1: Inbound | TCP | Port 22 | 0.0.0.0/0 | Allow Rule 2: Inbound | TCP | Port 443 | 0.0.0.0/0 | Allow Rule 3: Inbound | TCP | Port 3389 | 192.168.1.0/24 | Allow Rule 4: Outbound | All Traffic | 0.0.0.0/0 | Allow
Refer to the exhibit. A security auditor is reviewing the security group configuration for a web server. Which change would improve the security posture without breaking the application functionality?
⚠ Common exam trap
ISC2 often tests the misconception that all common ports (like HTTPS or outbound traffic) must be restricted to improve security, when in fact the critical mistake is leaving management protocols (SSH, RDP) open to the internet.
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
✓
Remove Rule 1 because SSH should not be open to the internet.
SSH (port 22) should never be open to the internet (0.0.0.0/0) on a web server. Removing Rule 1 eliminates this unnecessary exposure while the web server's HTTP/HTTPS rules remain intact, preserving application functionality. This aligns with the principle of least privilege and reduces the attack surface.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Remove Rule 2 because HTTPS should be restricted to a specific IP range.
Why it's wrong here
HTTPS must be open to the internet for a public web server.
- ✓
Remove Rule 1 because SSH should not be open to the internet.
Why this is correct
Correct: Reduces attack surface without affecting web service.
- ✗
Remove Rule 4 because outbound traffic should be restricted.
Why it's wrong here
Outbound access is often needed for updates and external dependencies.
- ✗
Remove Rule 3 because RDP should be allowed from anywhere.
Why it's wrong here
RDP should be restricted to trusted IPs, not opened to all.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CCSP 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 CCSP exam.