Question 360
At Redstone Aviation, the network engineering team administers FortiGate-based protection for approved aviation maintenance and scheduling networks under requirements for separated administrative flows and resilient site VPNs. An independent validation is requested for: FortiGate user authentication succeeds for a remote user but the firewall never matches the intended group because directory membership is misconfigured. Which observed outcome BEST demonstrates that the intended correction works?
Explanation
Correct Answer
The known member matches the expected authentication group and a user outside that group remains denied on the same destination. This outcome validates the intended correction for: FortiGate user authentication succeeds for a remote user but the firewall never matches the intended group because directory membership is misconfigured. The associated approved corrective action is: Correct the identity group's remote group filter or matching rule instead of enlarging the application firewall policy. The Redstone Aviation reviewer can therefore distinguish observable protection from an untested configuration claim.
Incorrect Answers
A controlled connection completes in both directions and FortiGate session diagnostics show the same intended translation path. This would verify a separate corrective action: Align ingress and return routing and NAT behavior for the VIP flow before broadening policy access. That separate change addresses: An inbound VIP maps to the correct server but response packets leave through a different WAN path, breaking stateful DNAT sessions. It does not validate the current Redstone Aviation issue: FortiGate user authentication succeeds for a remote user but the firewall never matches the intended group because directory membership is misconfigured. The relevant acceptance evidence is: The known member matches the expected authentication group and a user outside that group remains denied on the same destination.
A permitted test session has a valid route and an explicit allow-policy match, while removing its policy permission still blocks access. This would verify a separate corrective action: Configure the forward firewall rule and the required routing decision independently for the documented application flow. That separate change addresses: A rule review treats a policy route as if it grants application access and overlooks that FortiGate still evaluates firewall security policy. It does not validate the current Redstone Aviation issue: FortiGate user authentication succeeds for a remote user but the firewall never matches the intended group because directory membership is misconfigured. The relevant acceptance evidence is: The known member matches the expected authentication group and a user outside that group remains denied on the same destination.
Two test users behind the same translated address receive their intended different policy results without identity confusion. This would verify a separate corrective action: Avoid relying solely on IP-based FSSO for shared-address users and use an appropriate per-user authentication method for that network. That separate change addresses: Many remote users share one NAT gateway source address and FSSO attributes that IP to one user, granting mismatched policies to others. It does not validate the current Redstone Aviation issue: FortiGate user authentication succeeds for a remote user but the firewall never matches the intended group because directory membership is misconfigured. The relevant acceptance evidence is: The known member matches the expected authentication group and a user outside that group remains denied on the same destination.