Packet flow for Hardware Offload

[fozail]

Dear Experts,

Was wondering regarding packet flow in terms of hardware offload. Is it like below or somethingelse?

Ingress Stage > Session table/flow lookup> Offloaded

or 

Ingress Stage > Session table/flow lookup > App-ID/Content-ID inspection is done or not > offloaded

Please suggest.

Best Reagrds,

Fozail

[BPry]

@fozail this link should provide you with all the session offload documentation you could possibly want. 

https://live.paloaltonetworks.com/t5/Learning-Articles/Palo-Alto-Networks-Firewall-Session-Overview/...

[bmorris1]

Hi Fozail,

The flow is the second one you mentioned (at a high level), depending on the app it will fall to the first one i.e once the session is identified as SSL is then this gets offloaded if you're not decrypting.

Check this document, it goes into a lot of detail on the packet flow on the firewall.

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

hope this helps,

Ben

[fozail]

Hi Ben,

I have chceked the DOC-1628, but it does not talk about FPGA. After which stage FPGA comes into picture.

As far as I understood, once application gets identified like SSL and there is no further content ispection is needed, packet will go through Ingress Stage > Session Lookup > Matched Active session > application got identified like SSL and there is no further content ispection is needed > handover the packet to FPGA.

Please correct me if I am wrong.

Best Regards,

Fozail

[MP18]

yes my understanding is also  this if app is identified and no more decryption thenit is offloaded.

lets see if someone confirm this?