NAT with pf
Subject:   I don't understand
Date:   2003-12-15 12:19:22
From:   artymiak
Response to: I don't understand

ext_ad is the external address of your firewall's external interface, i.e. the address that other host on the Internet can see and connect to;

prv_ad is the address of your firewall's interface to which you connect private hosts; that address may or may not be accessible from the outside;

dmz_ad is the address of your firewalls's interface to which you conect hosts in the DeMilitarized Zone (a separate segment of your private network that is accessible to the outside world.