BSD Magazine goes free!
From the FreeBSD announce mailing list
We are happy to announce that BSD Magazine is transforming into a free monthly online publication. The online version of BSD Magazine will stay in the same quality and form. It will look like the BSD magazine one is familiar and comfortable with. Please sign up to our newsletter at www.bsdmag.org and get every issue straight to your inbox. Also, you can now download any of the previous issues from our website. The first online issue -- 2/2010 -- is coming out in February. Please spread the word about BSD Magazine.
Michal Gladecki, Editor-in-Chief of BSD Magazin
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump