Porta di rete

Outcome: Complete the task with Porta di rete (Network Port). User context: Un frontend usa la porta 4321 e chiama un'API sulla 8000. Il proxy pubblico espone solo HTTPS sulla 443. Technical concept or control: Porta di rete (Network Port). Why it fits: Imposta chiaramente le porte per servizi locali, container, firewall, controlli di integrità e proxy inversi. Do not use it when: Non esporre pubblicamente porte di database o di amministrazione. Separa le porte dei container dalle porte host pubblicate. Engineering requirements: Define inputs, outputs, contracts, and rules that must always hold. Set authorization and input checks. Define failures, timeouts, retries, one-time effects, data moves, and compatibility limits. Operations: Add useful signals and logs that hide sensitive data. Set capacity limits and write an operator guide. Test recovery and rollback. Acceptance criteria: Contract and failure-path tests pass. Data and authorization rules still hold during retries and partial failures. Check performance limits, monitoring, recovery, and rollback. Evidence and limits (evidence boundary): Lo standard copre solo l'ambito elencato. Non sceglie lo stile visivo, la decisione sul prodotto o l'esempio di vocabolario. Unknowns to confirm: Where the code runs, data stores, traffic shape, consistency needs, and the security boundary. Also confirm the compatibility period, service goals, and rollback limits.