PP098: What Goes On Inside a Firewall?
From Packet Protector by Packet Pushers
February 24, 2026 · 58 min · Episode 98
About this episode
The episode explores the inner workings of firewalls and packet processing.
On today’s show, we pop the lid off of a firewall (figuratively speaking) to understand what’s inside. We talk about how a packet moves through various packet-processing elements inside a firewall, how header analysis and de-encapsulation work, which hardware component has the biggest impact on performance, why stateful inspection still matters in an age of ... Read more »
People in this episode
Host: Packet Pushers
Topics covered
- firewall
- packet processing
- network security
- stateful inspection
- header analysis
Keywords
- firewall
- packet processing
- network security
- header analysis
- stateful inspection
Mentioned in this episode
Organizations: Packet Pushers
Products: firewall, packet, header, stateful inspection
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