After the move off the service port, the appliance answers perfectly from a laptop plugged in beside it, but nothing on the customer's admin subnet can reach the management GUI. The address, mask, gateway, and DNS settings all verify correct. What gap in the access process does this expose?
Select an answer to reveal the explanation.
Short Explanation
Testing from a laptop plugged in right beside the appliance is like test-driving a car inside your own garage — the engine starts, but you've driven none of the roads the customer will use. Prove management access from a real admin-subnet host through the real path; if it doesn't work from there, you don't have access, you have proximity.
Full Explanation
Management access is only proven when a client on the actual admin network opens an actual session through every hop the traffic traverses: switch port and VLAN, routed path, and any firewall or policy enforced between the admin subnet and the appliance. Direct laptop connection proves the web service is alive and nothing else — it tests one link, one subnet, zero policy. When addressing and gateway verify correct but off-subnet clients fail while an attached host succeeds, the obstruction is in the shared infrastructure between them, and exercising that path belongs to the access task's definition of done, not to a later troubleshooting ticket. The web-service restart folklore fails by mechanism: the service binds according to configuration, and address changes take effect through the network settings flow without the claimed ritual. HTTPS needs no per-subnet DNS zone — session establishment does not consult subnet zones, and certificate checks care about names, chains, and time rather than the client's address range. Disabling the service port does not release routed access either; the service port and the routed management path are independent by design. Exam caveat: total silence from one subnet with success from an attached host is a network-path answer, not an appliance-fault answer. Operational check: from an admin-subnet host, resolve the name, establish a TCP session to the management port, load the GUI, and have the firewall team confirm the permit rule that made it work.