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parking_solution/wiki/concepts/network-isolation.md
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type, tags, sources, updated
type tags sources updated
concept
parking
security
network
access-control
parking-system-architecture
2026-06-14

Network Isolation

Mandatory mitigation for the unauthenticated uhppote-udp-protocol: because the uhppote-controller can't authenticate, the network must be the security boundary (the trust-boundary = the network). (See parking-system-architecture §6.)

  • Control devices go on their own VLAN with no route to the booth/office network and no wireless bridge.
  • Requires a managed VLAN switch (in the bom).
  • Only when only the host can reach the controller does the controller's event log become a trustworthy audit source (combined with event-log-ingestion + the append-only-event-chain).

This makes the UHPPOTE setup tamper-evident behind isolation — but never tamper-proof; that requires the esp32-custom-controller.