That's less of a surprise, IMO -- pf is a BSD utility and was originally developed for OpenBSD. It's right in the front of the name so there's no question what

That's less of a surprise, IMO -- pf is a BSD utility and was originally developed for OpenBSD. It's right in the front of the name so there's no question what you're getting (as opposed to OSX, where there is a base there, but no one would know it unless they're Unixy types). https://en.wikipedia.org/wiki/PF_(firewall) https://en.wikipedia.org/wiki/PF_(firewall)