Question 370
At Eastvale Energy Cooperative, the FortiGate 7.6 security administration team encounters the following authorized operational case: a security investigation finds malware blocks but cannot reconstruct accepted session destinations because the policy logs only security events. They need a defensible FortiOS configuration, diagnosis, validation or prevention decision. What root condition most directly explains the described FortiGate symptom?
Explanation
Correct Answer
Security-event logging may omit normal accepted sessions necessary for full network activity reconstruction. The mechanism is relevant because the stated logging only security events incident concerns the actual selected path, policy, identity or inspection state. The appropriate response is to select the appropriate all-session or detailed traffic logging for the relevant firewall policy; verify it through this observed condition: a benign matching session appears with source, destination, service and policy ID.
Incorrect Answers
Destination NAT requires the specified port remap when external and internal listeners differ explains a different situation, vip destination port translation, where a reverse proxy on TCP 8443 is published through a standard external HTTPS endpoint but the FortiGate VIP has no port forwarding mapping. It does not account for the specific observed logging only security events condition at Eastvale Energy Cooperative. The decisive mechanism here is: Security-event logging may omit normal accepted sessions necessary for full network activity reconstruction.
Routed private inter-zone traffic may not require address translation when reciprocal routes exist explains a different situation, local network without unnecessary nat, where traffic between two routed internal security zones is accepted but its source address changes unexpectedly, breaking target audit logs. It does not account for the specific observed logging only security events condition at Eastvale Energy Cooperative. The decisive mechanism here is: Security-event logging may omit normal accepted sessions necessary for full network activity reconstruction.
Group-based firewall identity matching depends on directory identifiers rather than the group's friendly label explains a different situation, ldap group distinguished name, where an LDAP-backed firewall policy rejects a valid employee because the group DN references a renamed organizational unit. It does not account for the specific observed logging only security events condition at Eastvale Energy Cooperative. The decisive mechanism here is: Security-event logging may omit normal accepted sessions necessary for full network activity reconstruction.