Question 520
Before accepting a Zscaler configuration change, the team discovers: External payroll vendors need one HR web application but a ZPA segment includes an entire subnet and multiple administrative ports. What is the controlling reason for these observations?
Explanation
Correct Answer
The underlying principle is: Network-wide segment definitions conflict with application-specific least-privilege access and can permit unexpected internal discovery. Address it by: Define the exact application FQDNs and necessary ports and map access only to the approved vendor identity group. The confirmation is: A vendor reaches the payroll portal but cannot enumerate or connect to unrelated servers in that subnet.
Incorrect Answers
An identity-based URL policy cannot evaluate unavailable user-group attributes for unauthenticated or unrecognized traffic. “Review user authentication state, forwarding identity and safe unauthenticated defaults before adjusting the targeted group rule” would remedy that alternative situation, but it would not correct the present issue: network-wide segment definitions conflict with application-specific least-privilege access and can permit unexpected internal discovery.
“Build separate app segments and access policies using the authoritative project groups and any required posture conditions” is the supported response when a group-wide allow cannot enforce service-specific authorization when application ownership differs within the same general workforce. Here the decisive response is “Define the exact application FQDNs and necessary ports and map access only to the approved vendor identity group”, so that different intervention does not meet the stated requirement.
A wildcard app definition enlarges the eligible destination set and reduces the precision of application-level segmentation. “Replace the wildcard with the minimum approved exact FQDNs and ports and keep separate admin access under stronger policy” applies to that other condition. The reported evidence is external payroll vendors need one HR web application but a ZPA segment includes an entire subnet and multiple administrative ports; this alternative would address the wrong dependency.