Question 230
At Silvercrest University, the campus network defense team administers FortiGate-based protection for student and staff network services across buildings under requirements for separated identities and protected learning services. The security reviewer verifies a claimed fix for: An engineer adds a second reverse-direction allow rule for established return packets because they do not understand FortiGate stateful sessions. Which observed outcome BEST demonstrates that the intended correction works?
Explanation
Correct Answer
An allowed client-initiated session receives its return traffic without an unnecessarily broad unsolicited inbound rule. This outcome validates the intended correction for: An engineer adds a second reverse-direction allow rule for established return packets because they do not understand FortiGate stateful sessions. The associated approved corrective action is: Validate stateful session handling for the initiating policy and add separate rules only for genuinely new reverse connections. The Silvercrest University reviewer can therefore distinguish observable protection from an untested configuration claim.
Incorrect Answers
The new workstation address is correctly associated with the current user and the old address no longer inherits the stale user privileges. This would verify a separate corrective action: Enable supported workstation address verification or mapping refresh and ensure DHCP and event information reflect the current client address. That separate change addresses: A Windows workstation changes its IP address but FortiGate continues to authorize the previous IP-to-user FSSO binding. It does not validate the current Silvercrest University issue: An engineer adds a second reverse-direction allow rule for established return packets because they do not understand FortiGate stateful sessions. The relevant acceptance evidence is: An allowed client-initiated session receives its return traffic without an unnecessarily broad unsolicited inbound rule.
A test logon appears with consistent timestamps in the domain event, collector status and firewall identity monitor. This would verify a separate corrective action: Align trusted NTP sources and review consistent time handling across all relevant FSSO components. That separate change addresses: FSSO user mappings have incorrect expiry times because domain controllers, the collector and FortiGate do not share synchronized clocks. It does not validate the current Silvercrest University issue: An engineer adds a second reverse-direction allow rule for established return packets because they do not understand FortiGate stateful sessions. The relevant acceptance evidence is: An allowed client-initiated session receives its return traffic without an unnecessarily broad unsolicited inbound rule.
A test login proves the intended role and a separate traffic session matches only the appropriate authenticated user policy. This would verify a separate corrective action: Configure the supported authentication integration in the correct administrative or firewall user context and scope the access rule separately. That separate change addresses: A security administrator confuses SAML identity provider trust for administrative login with the firewall policy identity enforcement required for user traffic. It does not validate the current Silvercrest University issue: An engineer adds a second reverse-direction allow rule for established return packets because they do not understand FortiGate stateful sessions. The relevant acceptance evidence is: An allowed client-initiated session receives its return traffic without an unnecessarily broad unsolicited inbound rule.