Peter N. M. Hansteen<p>Long rumored, eagerly anticipated by some, "The Book of PF, 4th edition" <a href="https://nostarch.com/book-of-pf-4th-edition" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">nostarch.com/book-of-pf-4th-ed</span><span class="invisible">ition</span></a> is now available for PREORDER. The most up to date guide to the OpenBSD and FreeBSD networking toolset <a href="https://mastodon.social/tags/openbsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>openbsd</span></a> <a href="https://mastodon.social/tags/freebsd" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>freebsd</span></a> <a href="https://mastodon.social/tags/networking" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>networking</span></a> <a href="https://mastodon.social/tags/pf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pf</span></a> <a href="https://mastodon.social/tags/packetfilter" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>packetfilter</span></a> <a href="https://mastodon.social/tags/firewall" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>firewall</span></a> <a href="https://mastodon.social/tags/preorder" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>preorder</span></a> <a href="https://mastodon.social/tags/security" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>security</span></a> (again for the CEST-ish crowd)</p>