FreeBSD Firewalls

[Warren Block]

On Wed, 7 Dec 2016, James B. Byrne via freebsd-questions wrote:

> Well, the setup and loading of Postgresql9.6 seems to have completed
> successfully.  Now, before this can go live I need to set up the
> firewall.  I am used to IPTables on CentOS but have no experience with
> IPFilter or PF.
>
> First, which firewall, of the three I read are available (IPFW,
> IPFilter and PF is the recommended choice?

Either PF or IPFW, depending on who you ask.  Or, if you work for 
Juniper, IPF.

I used IPFW for many years, now have used PF for many years.

> Which of them, if any, have FW for dummies like tools/guides?

Peter Hansteen has at least one famous book on PF. There are example 
IPFW firewalls in /etc/rc.firewall, too.