Which of the following BEST ensures that a firewall is configured in compliance with an enterprise's security policy?
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A. B. C. D.D.
A review of the parameter settings will provide a good basis for comparison of the actual configuration to the security policy and will provide reliable audit evidence documentation.
Incorrect Answers: A: While interviewing the firewall administrator may provide a good process overview, it does not reliably confirm that the firewall configuration complies with the enterprise's security policy.
B: While procedures may provide a good understanding of how the firewall is supposed to be managed, they do not reliably confirm that the firewall configuration complies with the enterprise's security policy.
C: While reviewing the device's log file for recent attacks may provide indirect evidence about the fact that logging is enabled, it does not reliably confirm that the firewall configuration complies with the enterprise's security policy.
To ensure that a firewall is configured in compliance with an enterprise's security policy, it is necessary to review the parameter settings. The parameter settings determine how the firewall operates, what traffic it allows or blocks, and how it responds to various events. By reviewing the parameter settings, one can verify that the firewall is configured to comply with the enterprise's security policy.
Option A, interviewing the firewall administrator, is not the best choice because it relies on human input, which may be subjective and prone to errors. The administrator may not be aware of all the policy requirements, or they may have made mistakes while configuring the firewall. Thus, relying solely on an interview may not provide a comprehensive picture of the firewall's compliance.
Option B, reviewing the actual procedures, may be helpful in understanding how the firewall was configured and how it operates. However, it may not necessarily provide evidence of compliance with the security policy. Procedures may be outdated, incomplete, or not aligned with the policy. Therefore, reviewing procedures alone may not be sufficient.
Option C, reviewing the device's log file for recent attacks, is useful for identifying security incidents and analyzing their impact on the network. However, it does not necessarily provide information about the firewall's compliance with the security policy. Log files may show successful attacks that were not prevented by the firewall, but they may not reveal whether the firewall was configured to block that type of traffic.
In conclusion, the best way to ensure that a firewall is configured in compliance with an enterprise's security policy is to review the parameter settings. This will provide specific evidence that the firewall is operating in accordance with the policy and that the settings are consistent with the organization's security requirements.