The answer is disabling unused URL schemes and whitelisting outbound destinations. These two methods directly counter SSRF by limiting an attacker’s ability to manipulate server-side requests. Disabling schemes like file:// and dict:// removes dangerous protocols that could read local files or interact with internal services, while whitelisting ensures the application only connects to pre-approved external hosts, preventing redirection to internal IPs or cloud metadata endpoints. On the Certified Cloud Security Professional CCSP exam, this question tests your grasp of cloud-specific SSRF defenses, often appearing in the Cloud Platform and Infrastructure Security domain. A common trap is assuming input validation alone suffices—attackers easily bypass filters with encoding or redirects. Remember the mnemonic “D.W.”: Disable unused schemes, Whitelist destinations—two locks on the same door.
CCSP Cloud Application Security Practice Question
This CCSP practice question tests your understanding of cloud application security. 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.
Which TWO of the following are effective methods to protect against server-side request forgery (SSRF) in a cloud application? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Whitelist allowed outbound destinations
Option B is correct because whitelisting allowed outbound destinations is a primary defense against SSRF. By explicitly permitting only trusted external hosts (e.g., specific API endpoints or internal services), the application cannot be tricked into making requests to arbitrary internal or external targets, even if an attacker controls the URL parameter.
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.
✗
Use SSL inspection to check for malicious payloads
Read the scenario before looking for a memorised answer.
✗
Sanitize all user input for URL parameters
Why it's wrong here
Input validation can be bypassed; defense in depth needed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
ISC2 often tests the misconception that input sanitization alone is sufficient for SSRF protection, when in reality the attack exploits the server's trust in the destination, not the input format, making whitelisting and scheme restrictions the effective controls.
Detailed technical explanation
How to think about this question
SSRF exploits occur when an application fetches a remote resource based on user-supplied URLs without validating the target. Whitelisting leverages network-layer controls (e.g., security groups, egress firewalls, or proxy rules) to restrict outbound connections to only known, safe hosts. Disabling unused URL schemes (e.g., file://, dict://, gopher://) prevents attackers from accessing local files or internal services via non-HTTP protocols, which is a common SSRF vector in cloud environments where metadata services (e.g., AWS 169.254.169.254) are targeted.
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 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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
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.
Cloud Application Security — This question tests Cloud Application Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Whitelist allowed outbound destinations — Option B is correct because whitelisting allowed outbound destinations is a primary defense against SSRF. By explicitly permitting only trusted external hosts (e.g., specific API endpoints or internal services), the application cannot be tricked into making requests to arbitrary internal or external targets, even if an attacker controls the URL parameter.
What should I do if I get this CCSP 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.
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Question Discussion
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