Question 590
At Brookside Manufacturing, the plant network defense team administers FortiGate-based protection for industrial office networks and protected production systems under requirements for controlled inspection and limited access to process hosts. The security reviewer verifies a claimed fix for: Antivirus blocks a legitimate internal application package after a false-positive signature but the help desk disables the entire protection profile. Which observed outcome BEST demonstrates that the intended correction works?
Explanation
Correct Answer
The verified legitimate package downloads and an unrelated antivirus test indicator is still detected by the active profile. This outcome validates the intended correction for: Antivirus blocks a legitimate internal application package after a false-positive signature but the help desk disables the entire protection profile. The associated approved corrective action is: Validate the false positive and apply a narrowly scoped supported exception with review and expiration while retaining other protections. The Brookside Manufacturing reviewer can therefore distinguish observable protection from an untested configuration claim.
Incorrect Answers
An approved harmless test payload is visible to the applicable inspection engine while certificate-only mode remains limited to handshake metadata. This would verify a separate corrective action: Use a supported deep SSL inspection path with trusted enterprise endpoints when policy requires inspection of HTTPS payload content. That separate change addresses: An administrator enables certificate inspection but expects it to reveal malware hidden inside an encrypted HTTPS response body. It does not validate the current Brookside Manufacturing issue: Antivirus blocks a legitimate internal application package after a false-positive signature but the help desk disables the entire protection profile. The relevant acceptance evidence is: The verified legitimate package downloads and an unrelated antivirus test indicator is still detected by the active profile.
A controlled test flow logs a match against the expected deep-inspection policy and a separate bypass path is denied. This would verify a separate corrective action: Correct policy ordering and bind the intended SSL/SSH inspection profile to all applicable approved egress policies. That separate change addresses: A security team enables HTTPS deep inspection in a policy but clients connect around it through a different allow rule with certificate-only inspection. It does not validate the current Brookside Manufacturing issue: Antivirus blocks a legitimate internal application package after a false-positive signature but the help desk disables the entire protection profile. The relevant acceptance evidence is: The verified legitimate package downloads and an unrelated antivirus test indicator is still detected by the active profile.
A controlled IPS trigger shows a unique signature event, whereas a simple policy deny shows a separate firewall decision. This would verify a separate corrective action: Correlate IPS-specific events with the forward policy and test signature before reporting the detection mechanism. That separate change addresses: An analyst mistakes a FortiGate denied firewall-policy log for proof that an IPS signature blocked an exploit. It does not validate the current Brookside Manufacturing issue: Antivirus blocks a legitimate internal application package after a false-positive signature but the help desk disables the entire protection profile. The relevant acceptance evidence is: The verified legitimate package downloads and an unrelated antivirus test indicator is still detected by the active profile.