The PF User's Guide [0] covers most of what one needs to know for basic firewall...

petee · on June 20, 2018

And Peter Hansteen's PF tutorial is top notch too:

https://home.nuug.no/~peter/pf/en/

he also has a book that I've heard is great, but don't own (yet)

pasbesoin · on June 21, 2018

Thanks for mentioning it. If this is it, it's in O'Reilly's Safari catalog (I've no association, just a Safari account):

    The Book of PF, 3rd Edition
    By: Peter N.M. Hansteen
    Publisher: No Starch Press
    Pub. Date: October 8, 2014
    Print ISBN-13: 978-1-59327-589-1
    Pages in Print Edition: 248

http://my.safaribooksonline.com/book/operating-systems-and-s...

bleu-ble-bleu · on June 20, 2018

The book is amazing, and mostly a reprint of the site.

arp242 · on June 21, 2018

"man pf.conf" is also very useful.

yjftsjthsd-h · on June 21, 2018

Well, it's BSD:) Good manpages are one of the things they seem to really win at.