Question 150
At Brookside Manufacturing, the plant network defense team administers FortiGate-based protection for industrial office networks and protected production systems under requirements for controlled inspection and limited access to process hosts. An independent validation is requested for: FortiGate cannot resolve a logging server hostname for locally generated traffic although forwarded clients have working DNS. Which observed outcome BEST demonstrates that the intended correction works?
Explanation
Correct Answer
A local FortiGate name-resolution test succeeds and a fresh logging event reaches its intended remote server. This outcome validates the intended correction for: FortiGate cannot resolve a logging server hostname for locally generated traffic although forwarded clients have working DNS. The associated approved corrective action is: Troubleshoot FortiGate system DNS, local-out source selection and connectivity separately from forwarded client DNS configuration. The Brookside Manufacturing reviewer can therefore distinguish observable protection from an untested configuration claim.
Incorrect Answers
A controlled loss of the monitored primary link triggers the expected cluster transition without changing unrelated firewall policies. This would verify a separate corrective action: Configure HA interface monitoring for the required upstream links and test the designed failover behavior. That separate change addresses: A FortiGate active-passive HA pair keeps serving through a failed primary WAN port because the critical interface is not monitored. It does not validate the current Brookside Manufacturing issue: FortiGate cannot resolve a logging server hostname for locally generated traffic although forwarded clients have working DNS. The relevant acceptance evidence is: A local FortiGate name-resolution test succeeds and a fresh logging event reaches its intended remote server.
Clients in each VLAN use the correct gateway and forbidden traffic between the segments is denied by the expected policy. This would verify a separate corrective action: Create the required VLAN subinterfaces with matching switch tagging, distinct IP subnets and explicit inter-VLAN policies. That separate change addresses: Two office networks share one untagged FortiGate port but their traffic must have separate gateways and firewall policies. It does not validate the current Brookside Manufacturing issue: FortiGate cannot resolve a logging server hostname for locally generated traffic although forwarded clients have working DNS. The relevant acceptance evidence is: A local FortiGate name-resolution test succeeds and a fresh logging event reaches its intended remote server.
The controlled denied request appears with the correct remote user, access policy and cloud service context in the authorized logs. This would verify a separate corrective action: Inspect the relevant FortiSASE cloud event and user access logs together with identity and client state. That separate change addresses: A FortiSASE policy blocks remote work but security operations search only the on-premises FortiGate log store and see no user event. It does not validate the current Brookside Manufacturing issue: FortiGate cannot resolve a logging server hostname for locally generated traffic although forwarded clients have working DNS. The relevant acceptance evidence is: A local FortiGate name-resolution test succeeds and a fresh logging event reaches its intended remote server.