[Repost for the morning (CEST) crowd]

Friends, I wrote a book. It's now out in its fourth edition.

More in "The Book of PF, 4th Edition: It's Here, It's Real" https://nxdomain.no/~peter/its_real_its_here.html

For background, "Yes, The Book of PF, 4th Edition Is Coming Soon" https://nxdomain.no/~peter/yes_the_book_of_pf_4th_ed_is_coming.html

Get the book: https://nostarch.com/book-of-pf-4e

@nostarch #bookofpf #pf #networking #openbsd #freebsd #networktrickery #cybersecurity

Oh, I suppose I have been slacking and not telling you that if you order The Book of PF, 4th ed https://nostarch.com/book-of-pf-4th-edition now, you will get the *final version* ebook (print is still in progress) #bookofpf #openbsd #freebsd #networking #firewalls #pf #networktrickery #freesoftware #libresoftware @nostarch

Also see https://nxdomain.no/~peter/yes_the_book_of_pf_4th_ed_is_coming.html

Network Management with the OpenBSD Packet Filter Toolset https://www.bsdcan.org/2025/timetable/timetable-Network-Management-with.html at #bsdcan now concluded, new slides up at https://nxdomain.no/~peter/pf_fullday.pdf -- now with during-session updates (labs available for attendees only, sorry)

#openbsd #freebsd #pf #packetfilter #firewall #networking #devops #sysadmin #security #networktrickery