Palo Alto Packet Flow

Guys,

Here i am explaining the basic packet processing through  palo alto firewall using simplified steps.
This is focusing  beginners who is finding difficulty to understand packet flow process in palo alto firewall.
I am categorising  explanation in to  two part for simplicity . One for new flow and other one for existing flow.

I have included only impotent steps. You may refer palo alto documentation for detailed steps. Link is available last of this page.

Life Cycle for for New Packet.

Palo Alto Packet Flow

https://live.paloaltonetworks.com/t5/Learning-Articles/Packet-Flow-Sequence-in-PAN-OS/ta-p/56081