From owner-freebsd-security Thu Oct 11 8:25:19 2001 Delivered-To: freebsd-security@freebsd.org Received: from squall.waterspout.com (squall.waterspout.com [208.13.56.12]) by hub.freebsd.org (Postfix) with ESMTP id 2168637B403 for ; Thu, 11 Oct 2001 08:25:15 -0700 (PDT) Received: by squall.waterspout.com (Postfix, from userid 1050) id 92C4F9B08; Thu, 11 Oct 2001 10:24:32 -0500 (EST) Date: Thu, 11 Oct 2001 10:24:32 -0500 From: Will Andrews To: Rob Simmons Cc: Allen Landsidel , freebsd-security@FreeBSD.ORG, Brock Kreiser Subject: Re: firewall Message-ID: <20011011102432.B57251@squall.waterspout.com> Reply-To: Will Andrews Mail-Followup-To: Rob Simmons , Allen Landsidel , freebsd-security@FreeBSD.ORG, Brock Kreiser References: <5.1.0.14.0.20011011094352.00b022e8@rfnj.org> <20011011100410.G7007-100000@mail.wlcg.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20011011100410.G7007-100000@mail.wlcg.com> User-Agent: Mutt/1.3.22.1i Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Thu, Oct 11, 2001 at 10:06:39AM -0400, Rob Simmons wrote: > Passive FTP requires a larger hole in the firewall than active does. You > must open port 21 as well as ports > 1024. Not good. > > If you use ipfilter and are keeping state, you only need the one pass in > rule for port 21. The state tables take care of the rest. Er, you have that backwards. Passive FTP requires a SMALLER hole because it doesn't require ports > 1024 like active does. -- wca To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message