mehma sarja wrote on Sun, May 17, 2009 at 10:35:27AM -0700:

> I want to test two pf firewalls in-line - an old openBSD (3.7 #50,

That makes absolutely no sense.  Don't run real servers with historical
software.  Run 4.5.

> i386) is on the 'outside' and a new FreeBSD (7.2 #0 amd64) is on
> the 'inside.'

Using an external and an internal router with a border net (DMZ)
in between is *the* standard way to run a firewall.  Certainly,
there are other possibilities, but's that's what you usually do
when you have the resources.

> Here is the setup INTERNET ===[outside port bridged to inside
> port OLD pf] === [outside port bridged to inside port NEW pf] === LAN

That doesn't sound well.  Bridging should definitely not be involved.
In a traditional internal/external firewall setup, bridging is
particularly counter-productive.

> I took the old pf.conf and am using it in the new machine.
> The setup blocks smpts and https verifiably.
> Perhaps also imaps and pop3s.

That does not sound well.  "Perhaps" should not be involved when setting
up a firewall.  Pay attention to use a default-deny policy.

> Any help will be taken as grateful relief.

Start by reading a standard textbook about firewall design.

Yours,
  Ingo

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