English technical overview. The complete supplied article is available in Persian using the language switch.
Overview
Match firewall policy and deployment architecture to organisational needs.
Design considerations
Firewalls apply rules between security zones. Stateful inspection adds connection context; application-aware platforms provide further policy controls. Capabilities do not remove the need for a clear network design.
Operational practice
Use explicit permitted flows, review rules regularly and log relevant decisions. Consider throughput with security features enabled, availability requirements and failover. Document and test changes before production rollout.