Date: Wed, 27 Feb 2002 17:15:35 +0100 From: Krzysztof Zaraska <kzaraska@student.uci.agh.edu.pl> To: "Bart Matthaei" <bart@dreamflow.nl> Cc: sumirati@yahoo.de, security@freebsd.org Subject: Re: best firewall option for FreeBSD Message-ID: <20020227171535.5a55cee3.kzaraska@student.uci.agh.edu.pl> In-Reply-To: <20020227144806.W62131@heresy.dreamflow.nl> References: <20020227132846.28405.qmail@web13305.mail.yahoo.com> <20020227144806.W62131@heresy.dreamflow.nl>
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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 // Prelude IDS: http://www.prelude-ids.org/ // A dream will always triumph over reality, once it is given the chance. // -- Stanislaw Lem To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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