BSD-NL Conference - Early 2025
A walkthrough of a packet's journey through (FreeBSD's) pf, concentrating on the big picture and its implications.
We'll cover when packets are inspected, when rules are evaluated and how states are used. Along the way we'll cover what DTrace probes can show us, what some of pfctl's counters mean and just how many times pf can look at a single packet.
This talk is intended for firewall admins looking for a deeper understanding and aspiring pf developers. It is not a "How to use pf" talk.
In this talk, we'll take a visual and educational journey to the stars. We'll follow the adventures of the spaceship BSD-NL 2025 (since NCC-1701 was already taken) on their voyage of exploration. From its humble beginnings at the space dock, we'll see how ZFS was integrated into the ships systems and how the chief storage engineer saved the crew numerous times during their encounters in (disk) space.
Come along for the ride and learn all about the cool features that ZFS provides. You may think this is all science-fiction technology, yet it is available right here and now, for free.