Do you know book or Ebook about security?

Question

Hello i'm actually searching books about security pf system and networks i wait your suggestion

Answer 1

This migth interest you...!

• The Web Application Hacker's Handbook: Finding and Exploiting Security Flaws

Answer 2

What does "pf" mean?

Packet filtering
Personal firewall
...?

Answer 3

pf is the statefull paket filter on OpenBSD, FreeBSD and NetBSD.
So good documentation, and source code available.

Answer 4

Good; with that answer I can add this in-context (basically to support reading comprehension).

https://www.pfsense.org/ (pfSense, FreeBSD)
"...rapidly becoming the world's most trusted open source network security solution."

This is an open source firewall / router with unified threat management, load balancing, multi WAN, etc.
The name arises because it uses the packet filtering tool "PF".

Here's where it generates pf rules, so you can see what the GUI does for you (+debugging):
https://www.netgate.com/docs/pfsense/firewall/editing-the-pf-ruleset.html
https://www.netgate.com/docs/pfsense/firewall/firewall-rule-troubleshooting.html

This firewall is no joke...I hope you have fun with it.