Question 850
At Kingsford Energy Cooperative, the FortiGate 7.6 security administration team encounters the following authorized operational case: a FortiGate becomes CPU-bound after enabling an overly broad all-signature IPS sensor on low-risk backup traffic. They need a defensible FortiOS configuration, diagnosis, validation or prevention decision. What root condition most directly explains the described FortiGate symptom?
Explanation
Correct Answer
Inspection cost rises when many signatures apply to traffic unrelated to their threat surface. The mechanism is relevant because the stated ips excessive cpu consumption incident concerns the actual selected path, policy, identity or inspection state. The appropriate response is to tune IPS signatures and traffic scope based on actual protected services and measured resource cost; verify it through this observed condition: peak load stays within CPU targets while service-specific exploit checks still trigger.
Incorrect Answers
Certificate inspection can examine handshake or certificate metadata but cannot expose encrypted HTTP request bodies explains a different situation, certificate inspection hostname limitation, where security officers expect certificate-only SSL inspection to detect sensitive keywords inside an HTTPS POST body. It does not account for the specific observed ips excessive cpu consumption condition at Kingsford Energy Cooperative. The decisive mechanism here is: Inspection cost rises when many signatures apply to traffic unrelated to their threat surface.
Not all encrypted transport protocols expose the same payload to a TLS/TCP inspection policy explains a different situation, inspection bypass due to quic, where a web security profile sees HTTPS requests over TCP but the same browser uses UDP-based QUIC and relevant inspection decisions are absent. It does not account for the specific observed ips excessive cpu consumption condition at Kingsford Energy Cooperative. The decisive mechanism here is: Inspection cost rises when many signatures apply to traffic unrelated to their threat surface.
A TLS certificate failure can stop a session before the web filter assigns its normal URL category verdict explains a different situation, website certificate failure versus category block, where a site fails in the browser and staff blame web categorization even though FortiGate logs a TLS certificate-validation error. It does not account for the specific observed ips excessive cpu consumption condition at Kingsford Energy Cooperative. The decisive mechanism here is: Inspection cost rises when many signatures apply to traffic unrelated to their threat surface.