Question 870
At Kingsford Insurance, the FortiGate 7.6 security administration team encounters the following authorized operational case: IPS blocks a known exploit over plaintext HTTP but does not detect the same URL payload in HTTPS under certificate-only inspection. They need a defensible FortiOS configuration, diagnosis, validation or prevention decision. What root condition most directly explains the described FortiGate symptom?
Explanation
Correct Answer
Payload-specific IPS signatures cannot examine encrypted application bytes that the firewall has not decrypted. The mechanism is relevant because the stated ssl encryption limits for ips incident concerns the actual selected path, policy, identity or inspection state. The appropriate response is to use authorized compatible SSL deep inspection where IPS payload signatures require decrypted content; verify it through this observed condition: a supervised encrypted harmless signature test is matched under the approved inspection policy.
Incorrect Answers
Global invalid-certificate bypass removes protection for unrelated TLS destinations explains a different situation, certificate validation versus bypass, where a support engineer disables all SSL certificate checks to accommodate one malformed vendor chain. It does not account for the specific observed ssl encryption limits for ips condition at Kingsford Insurance. The decisive mechanism here is: Payload-specific IPS signatures cannot examine encrypted application bytes that the firewall has not decrypted.
Static URL matching is determined by configured pattern type and ordering, not a human-readable resemblance explains a different situation, static url allowlist syntax, where a partner help site remains blocked even after a web filter allowlist entry is created with a nonmatching wildcard pattern. It does not account for the specific observed ssl encryption limits for ips condition at Kingsford Insurance. The decisive mechanism here is: Payload-specific IPS signatures cannot examine encrypted application bytes that the firewall has not decrypted.
Custom category matching is limited to its maintained member domain or URL records explains a different situation, fortiguard custom category maintenance, where a company-created web category excludes a newly purchased SaaS hostname, leaving an access rule too permissive. It does not account for the specific observed ssl encryption limits for ips condition at Kingsford Insurance. The decisive mechanism here is: Payload-specific IPS signatures cannot examine encrypted application bytes that the firewall has not decrypted.