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Enabling 802.1X with approved EAP methods and restricted fallback where required would not implement default-deny inter-VLAN controls with explicit internet-only guest paths.

Moving specific restrictive statements ahead of broad permits would not implement default-deny inter-VLAN controls with explicit internet-only guest paths.

Isolate IoT devices in restricted zones with only required video-service flows would not implement default-deny inter-VLAN controls with explicit internet-only guest paths.

That test concerns 802.1x wired nac rather than the specific reported condition. Targeted connectivity validates segregation.

Denial and permitted recorder flow validate zoning. That check cannot demonstrate correct hostname resolution for the destination.

Test the prohibited remote management connection and review hit counters. That check cannot demonstrate correct hostname resolution for the destination.

This describes the 802.1x wired nac mechanism, not the failure in this case. Guest policy should not inherit trusted employee network rights.

Stateful firewalls can distinguish permitted connection initiation from return traffic. That does not establish guest segment has unneeded lateral access.

Insecure IoT devices create a pivot into sensitive user systems. That does not establish guest segment has unneeded lateral access.

Administratively disable unused jacks until an approved activation request would not address the need for isolate IoT devices in restricted zones with only required video-service flows.

Implementing default-deny inter-VLAN controls with explicit internet-only guest paths would not address the need for isolate IoT devices in restricted zones with only required video-service flows.

Limiting learned MAC addresses using supported switch port-security settings would not address the need for isolate IoT devices in restricted zones with only required video-service flows.

Plug a test endpoint into an unused port and confirm no network access. That check cannot demonstrate try camera-initiated connections to payroll and approved recorder.

DNS resolution maps hostnames to records and can fail independently of packet forwarding. That check cannot demonstrate try camera-initiated connections to payroll and approved recorder.

Generate a second unauthorized source MAC and inspect the violation action. That check cannot demonstrate try camera-initiated connections to payroll and approved recorder.

Unused ports create unmonitored internal access opportunities. That does not establish insecure IoT devices create a pivot into sensitive user systems.

This describes the 802.1x wired nac mechanism, not the failure in this case. Low-trust devices should not reach critical corporate assets.

Guest policy should not inherit trusted employee network rights. That does not establish insecure IoT devices create a pivot into sensitive user systems.

Restricting TCP 1433 to approved application hosts and deny other access would not move specific restrictive statements ahead of broad permits.

Implementing default-deny inter-VLAN controls with explicit internet-only guest paths would not move specific restrictive statements ahead of broad permits.

Administratively disable unused jacks until an approved activation request would not move specific restrictive statements ahead of broad permits.

Positive and negative checks validate ACL scope. It does not test the prohibited remote management connection and review hit counters.

Plug a test endpoint into an unused port and confirm no network access. It does not test the prohibited remote management connection and review hit counters.

DNS resolution maps hostnames to records and can fail independently of packet forwarding. It does not test the prohibited remote management connection and review hit counters.

Stateful firewalls can distinguish permitted connection initiation from return traffic. The missing change involves first-match ACL evaluation makes the later deny ineffective.

Unused ports create unmonitored internal access opportunities. That does not establish the defined inbound-versus-return session policy.

Guest policy should not inherit trusted employee network rights. The missing change involves first-match ACL evaluation makes the later deny ineffective.

Inspecting both transceiver identifiers and substitute a known-compatible test pair would not address the need for interview users and correlate precise failures with the recent firewall change.

Scheduling a controlled change with dependency assessment and recovery plan would not address the need for interview users and correlate precise failures with the recent firewall change.

Escalate with packet evidence and impact details to the carrier while coordinating restoration would not address the need for interview users and correlate precise failures with the recent firewall change.

Traffic continuity of unrelated VPNs validates risk-controlled change. That check cannot demonstrate correct hostname resolution for the destination.

Confirm carrier acknowledgement and restored packet forwarding. That check cannot demonstrate correct hostname resolution for the destination.

Changed physical signal behavior tests the hypothesis. That check cannot demonstrate correct hostname resolution for the destination.