Question 410
At Fairmont University, the FortiGate 7.6 security administration team encounters the following authorized operational case: a published service hits an unexpected firewall deny when engineers assume the rule will always match the original public destination address. They need a defensible FortiOS configuration, diagnosis, validation or prevention decision. What root condition most directly explains the described FortiGate symptom?
Explanation
Correct Answer
DNAT-associated policies depend on the translated-service mapping and correct policy destination object. The mechanism is relevant because the stated policy match order with dnat incident concerns the actual selected path, policy, identity or inspection state. The appropriate response is to verify FortiOS VIP matching semantics and use the VIP object consistently in the inbound policy; verify it through this observed condition: debug flow identifies the selected VIP and accepting rule for an authorized request.
Incorrect Answers
Authentication success alone does not necessarily provide session start, stop or accounting records explains a different situation, radius accounting visibility, where security operations cannot correlate user logoff events because the FortiGate implementation collects only RADIUS authentication results. It does not account for the specific observed policy match order with dnat condition at Fairmont University. The decisive mechanism here is: DNAT-associated policies depend on the translated-service mapping and correct policy destination object.
Remote directory password validation does not imply a second authentication factor is being enforced explains a different situation, mfa through identity provider, where remote privileged firewall users authenticate through an external directory without the required multi-factor challenge. It does not account for the specific observed policy match order with dnat condition at Fairmont University. The decisive mechanism here is: DNAT-associated policies depend on the translated-service mapping and correct policy destination object.
Unfiltered passive identity does not establish authorization for every corporate resource explains a different situation, fsso group exclusion safety, where an engineer broadens FSSO filters to every domain user to fix one application's access failure. It does not account for the specific observed policy match order with dnat condition at Fairmont University. The decisive mechanism here is: DNAT-associated policies depend on the translated-service mapping and correct policy destination object.