Firewall Packet Processing Workflow - Step-by-Step Security Inspection Flow #1946727 (License: Personal Use)

This diagram outlines the multi-stage packet inspection pipeline used by next-generation firewalls, starting with initial packet processing (source/destination zone, PBF lookup), followed by security pre-policy checks (allowed ports, session creation), application identification (encrypted traffic detection, decryption, override policies), security policy evaluation (profile checks), and post-policy actions (re-encryption, NAT, forwarding). Critical decision points are highlighted in red to indicate policy enforcement or session creation triggers.

Used on cybersecurity documentation, firewall configuration guides, or networking training pages to explain how modern firewalls evaluate traffic. Matches user intent for understanding firewall logic, troubleshooting packet drops, or designing security policies.