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ISC2 CC Practice Question: Drag and drop the steps to implement a firewall…
Drag and drop the steps to implement a firewall rule allowing inbound HTTPS traffic into the correct order.
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
✓
Step 1: Define source and destination zones. Step 2: Specify protocol (TCP) and port (443). Step 3: Set action to allow. Step 4: Save and apply the rule.
The correct sequence to implement a firewall rule for inbound HTTPS traffic is: first define the source and destination zones to control traffic direction, then specify the protocol (TCP) and destination port (443) for HTTPS, next set the action to 'allow', and finally save and apply the rule. Zones provide context, the port identifies the service, the action permits the traffic, and saving ensures the rule is active. Common mistakes include swapping the order of zones and port specification, setting the action prematurely, or saving before defining the action.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Step 1: Define source and destination zones. Step 2: Specify protocol (TCP) and port (443). Step 3: Set action to allow. Step 4: Save and apply the rule.
Why this is correct
This order ensures the rule is built logically: first define traffic direction (zones), then specify the traffic type (protocol/port), then set the action, and finally commit the rule.
- ✗
Step 1: Specify protocol (TCP) and port (443). Step 2: Define source and destination zones. Step 3: Set action to allow. Step 4: Save and apply the rule.
Why it's wrong here
This is incorrect because zones must be defined before specifying the protocol/port to ensure the rule applies to the correct traffic flows.
- ✗
Step 1: Define source and destination zones. Step 2: Set action to allow. Step 3: Specify protocol (TCP) and port (443). Step 4: Save and apply the rule.
Why it's wrong here
This is incorrect because the action should be set after specifying the protocol and port to avoid applying an action to undefined traffic.
- ✗
Step 1: Define source and destination zones. Step 2: Specify protocol (TCP) and port (443). Step 3: Save and apply the rule. Step 4: Set action to allow.
Why it's wrong here
This is incorrect because the action must be set before saving; otherwise the rule is saved without an action, making it incomplete.
Go deeper
Related to this question
Learn chapter
Access Control Fundamentals
Key term
TCP
TCP is a connection-oriented transport layer protocol that ensures reliable, ordered, and error-checked delivery of data between applications over IP networks.
Key term
Firewall rule
A firewall rule is a set of conditions that tells a firewall which network traffic to allow or block based on attributes like source, destination, port, and protocol.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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