Re: best firewall option for FreeBSD

From: Krzysztof Zaraska (kzaraska@student.uci.agh.edu.pl)
Date: 02/27/02 

Date: Wed, 27 Feb 2002 17:15:35 +0100
From: Krzysztof Zaraska <kzaraska@student.uci.agh.edu.pl>
To: "Bart Matthaei" <bart@dreamflow.nl>

On Wed, 27 Feb 2002 14:48:06 +0100 Bart Matthaei wrote:

> On Wed, Feb 27, 2002 at 02:28:46PM +0100, m p wrote:
> > To filter all but ssh, http, https, smtp and pop3 (aka mail (what you
meant
> > with outlook)) you can choose both. But ftp is a braindead (from a
firewaller
> > sight) protocol. You can not simple make a rule "allow tcp from
internal
> > network to external ftp-server" - because it will use more than one
port.
>
> Agreed.
> I know that linux has a fix for this issue. There's FTP
> masquerading support in the kernel. BSD hasn't got such a thing as far
> as i know.

This can be done with IPFilter (ipf) using ipnat. I have a working
firewall with that :) 

-- 
// Krzysztof Zaraska * kzaraska (at) student.uci.agh.edu.pl
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// A dream will always triumph over reality, once it is given the chance.
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