Question 630
At Harborview Insurance, the security architecture team administers FortiGate-based protection for regional claims offices and cloud-hosted services under requirements for auditable firewall changes and defended remote access. An independent validation is requested for: An analyst mistakes a FortiGate denied firewall-policy log for proof that an IPS signature blocked an exploit. Which observed outcome BEST demonstrates that the intended correction works?
Explanation
Correct Answer
A controlled IPS trigger shows a unique signature event, whereas a simple policy deny shows a separate firewall decision. This outcome validates the intended correction for: An analyst mistakes a FortiGate denied firewall-policy log for proof that an IPS signature blocked an exploit. The associated approved corrective action is: Correlate IPS-specific events with the forward policy and test signature before reporting the detection mechanism. The Harborview Insurance reviewer can therefore distinguish observable protection from an untested configuration claim.
Incorrect Answers
A managed test browser trusts only the intended enterprise inspection chain and an unexpected origin identity remains blocked or flagged. This would verify a separate corrective action: Use the correct authorized inspection CA for outbound re-signing and preserve verified origin certificate identities in the inspection decision. That separate change addresses: A device mistakenly applies a private corporate CA certificate as the identity for an unrelated public web server during TLS interception. It does not validate the current Harborview Insurance issue: An analyst mistakes a FortiGate denied firewall-policy log for proof that an IPS signature blocked an exploit. The relevant acceptance evidence is: A controlled IPS trigger shows a unique signature event, whereas a simple policy deny shows a separate firewall decision.
The one approved destination loads and another website in the prohibited category remains blocked under the same policy. This would verify a separate corrective action: Create a narrowly scoped URL filter or supported category override for the specific allowed domain and user context. That separate change addresses: A department needs an approved exception for one domain, but engineers allow its entire FortiGuard category across all users. It does not validate the current Harborview Insurance issue: An analyst mistakes a FortiGate denied firewall-policy log for proof that an IPS signature blocked an exploit. The relevant acceptance evidence is: A controlled IPS trigger shows a unique signature event, whereas a simple policy deny shows a separate firewall decision.
A controlled test detection produces an attributable antivirus log and the associated user traffic record. This would verify a separate corrective action: Enable relevant antivirus and traffic logs and correlate the signature event with source, destination, file and policy identifiers. That separate change addresses: Antivirus detects a file but incident responders cannot determine which policy or session delivered it because its logging configuration is incomplete. It does not validate the current Harborview Insurance issue: An analyst mistakes a FortiGate denied firewall-policy log for proof that an IPS signature blocked an exploit. The relevant acceptance evidence is: A controlled IPS trigger shows a unique signature event, whereas a simple policy deny shows a separate firewall decision.