Question 380
At Cedarfield Hospitality, the infrastructure security team administers FortiGate-based protection for a group of hotels and central reservations systems under requirements for protected guest networks and reliable payment paths. The security reviewer verifies a claimed fix for: Many remote users share one NAT gateway source address and FSSO attributes that IP to one user, granting mismatched policies to others. Which observed outcome BEST demonstrates that the intended correction works?
Explanation
Correct Answer
Two test users behind the same translated address receive their intended different policy results without identity confusion. This outcome validates the intended correction for: Many remote users share one NAT gateway source address and FSSO attributes that IP to one user, granting mismatched policies to others. The associated approved corrective action is: Avoid relying solely on IP-based FSSO for shared-address users and use an appropriate per-user authentication method for that network. The Cedarfield Hospitality reviewer can therefore distinguish observable protection from an untested configuration claim.
Incorrect Answers
A controlled trace identifies both the actual private client address and its assigned translated public address without conflating them. This would verify a separate corrective action: Correlate FortiGate session and traffic log original and translated address fields for the matched SNAT rule. That separate change addresses: The help desk interprets a NAT session's translated source field as the real endpoint identity and records the wrong affected client. It does not validate the current Cedarfield Hospitality issue: Many remote users share one NAT gateway source address and FSSO attributes that IP to one user, granting mismatched policies to others. The relevant acceptance evidence is: Two test users behind the same translated address receive their intended different policy results without identity confusion.
A test account authenticates and resolves the approved directory group while a separate nonmember is not granted group access. This would verify a separate corrective action: Configure the supported LDAP server settings, bind credentials and directory scope and test a known permitted group member. That separate change addresses: A FortiGate remote user group relies on LDAP, but authentication fails because the configured bind account and directory base do not match. It does not validate the current Cedarfield Hospitality issue: Many remote users share one NAT gateway source address and FSSO attributes that IP to one user, granting mismatched policies to others. The relevant acceptance evidence is: Two test users behind the same translated address receive their intended different policy results without identity confusion.
The approved SaaS session matches the intended service-specific policy and unrelated internet traffic remains denied. This would verify a separate corrective action: Evaluate supported FortiGate internet service definitions or appropriate application-aware controls for the documented SaaS traffic. That separate change addresses: An organization permits a SaaS application using a static public IP list that changes frequently, causing intermittent failures and broad compensating rules. It does not validate the current Cedarfield Hospitality issue: Many remote users share one NAT gateway source address and FSSO attributes that IP to one user, granting mismatched policies to others. The relevant acceptance evidence is: Two test users behind the same translated address receive their intended different policy results without identity confusion.