Palo Alto Firewall Architecture is based upon an exclusive design of Single Pass Parallel Processing (SP3) Architecture...| Network Interview
Firewall first find the routing rule in routing table that matches based on the destination address in packet, when performing this match FortiGate evaluate| Network Interview
In Stateful vs Stateless Firewall, Stateless Firewall works by treating each packet as an isolated unit, Stateful firewalls work by maintaining context about| IP With Ease