Refer to the exhibit.

Because the FortiGate packet sniffer shows that HTTPS or SSH traffic is not reaching the external interface, troubleshooting should begin with AWS controls that process traffic before it reaches FortiOS. The study guide identifies security-group rules as a primary checkpoint for EC2 connectivity problems and provides an example in which inbound rules control the allowed source addresses for HTTPS and SSH. A FortiGate firewall policy cannot explain traffic that never arrives at the FortiGate interface. NACLs should also be checked in appropriate cases, particularly when multiple EC2 instances in the same subnet are affected, but FortiGate debug flow does not inspect AWS NACL processing. The EC2 instance ID itself does not determine whether these management packets are admitted. Therefore, the administrator should verify the security group ' s inbound HTTPS and SSH rules.