Fortinet Certified Solution Specialist: Enterprise Firewall & Secure Networking 7.6 Architect Practice Mode

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose C0

  ,D - The Network Security Support Engineer 7.6 Study Guide explicitly explains this debug message: "iprope_in_check() check failed, drop" means the packet is destined to a FortiGate IP address and one of these conditions applies: The service is not enabled The service is using a different TCP port The source IP address is not included in the trusted host list The packet matches a local-in policy with action deny That directly confirms C. Trusted host list misconfiguration. Why D is the second valid choice: The FortiOS administration guide explains that: "IP pools and VIPs are considered local IP addresses if responding to ARP requests on these external IP addresses is enabled ... the FortiGate is considered a destination for those IP addresses ... once an IP pool or VIP has been configured ... the FortiGate considers it as a local address and will not forward traffic based on the routing table." Because iprope_in_check() is a local-in/local-destination type failure, a VIP or IP pool misconfiguration can cause traffic to be treated as destined for the FortiGate itself, which can then trigger this drop condition if the matching local service/local-in handling is not valid. So D is the closest supported second answer from the available choices. Why the other options are wrong: A is wrong because policy route problems are not the documented meaning of this specific debug message. The study guide instead ties iprope_in_check() check failed, drop to management/local-in conditions. B is wrong because the study guide says traffic shaping drops appear as: "Denied by quota check"