Google Professional Cloud Network Engineer Question 736
Select 3Google Cloud PlatformYour organization utilizes Google Cloud NGFW (Next-Generation Firewall) to secure traffic between a set of Compute Engine instances and an on-premises data center. Recently, users have reported that they are experiencing connectivity issues when accessing on-premises resources. Upon investigating, you suspect an issue with the NGFW rules or policies. Which of the following steps should you take to troubleshoot and tune the NGFW rules effectively?
- A
Check the NGFW rule logs to identify any dropped traffic and analyze the source and destination IPs.
- B
Enable debug logging on the NGFW to gain deeper insights into traffic flows.
- C
Review the priority order of the NGFW rules to ensure there are no conflicts or unintended rule matches.
- D
Disable all NGFW rules temporarily to test connectivity without firewall restrictions.
- E
Verify that the NGFW policies are correctly associated with the intended network and subnets.
Show answer and explanation
Correct answers: A, C, E
Explanation
To effectively troubleshoot the connectivity issue, you need to analyze the NGFW rule logs for dropped traffic, review the priority of rules to ensure proper traffic matching, and confirm that policies are applied to the intended network and subnets. These steps help identify misconfigurations or misapplied rules without compromising the security of the environment. Enabling debug logging or disabling all rules is not recommended for initial troubleshooting as they introduce operational or security risks.
- A. Correct.
Checking the NGFW rule logs is a critical step to identify whether any traffic is being blocked unexpectedly and to analyze the reasons for the dropped packets.
- B. Incorrect.
Enabling debug logging on an NGFW is not a best practice for initial troubleshooting due to the potential overhead it can cause and the high volume of logs it generates. It is better used as a last resort.
- C. Correct.
Reviewing the priority order of rules is necessary to ensure that higher-priority rules are not inadvertently blocking traffic that should be allowed by lower-priority rules.
- D. Incorrect.
Disabling all NGFW rules temporarily is not a recommended approach, as it exposes your environment to security vulnerabilities and may impact compliance requirements.
- E. Correct.
Verifying that the NGFW policies are correctly associated with the intended network and subnets ensures that the rules are being applied to the correct scope and traffic flows.