I got an interesting question through the comments section on my blog:
What does “Bytes sent/ Bytes received” mean in ACC screen of Palo Alto firewall? I mean, if 500MB of packets are sent from a source device and go through a firewall, get permitted to reach the destination, then the firewall should not see the packets as “sent” or “received”; the firewall just “processes” the packets regardless of the direction, I suppose.
Quite a good questions. Let’s have a look: