From owner-freebsd-security Mon May 15 17:13: 5 2000 Delivered-To: freebsd-security@freebsd.org Received: from Awfulhak.org (tun.AwfulHak.org [194.242.139.173]) by hub.freebsd.org (Postfix) with ESMTP id 2878C37B5CF for ; Mon, 15 May 2000 17:12:59 -0700 (PDT) (envelope-from brian@Awfulhak.org) Received: from hak.lan.Awfulhak.org (root@hak.lan.awfulhak.org [172.16.0.12]) by Awfulhak.org (8.9.3/8.9.3) with ESMTP id BAA86599; Tue, 16 May 2000 01:10:33 +0100 (BST) (envelope-from brian@hak.lan.Awfulhak.org) Received: from hak.lan.Awfulhak.org (brian@localhost [127.0.0.1]) by hak.lan.Awfulhak.org (8.9.3/8.9.3) with ESMTP id BAA01357; Tue, 16 May 2000 01:10:31 +0100 (BST) (envelope-from brian@hak.lan.Awfulhak.org) Message-Id: <200005160010.BAA01357@hak.lan.Awfulhak.org> X-Mailer: exmh version 2.1.1 10/15/1999 To: Marc Silver Cc: "Dan O'Connor" , freebsd-security@FreeBSD.ORG, brian@hak.lan.Awfulhak.org Subject: Re: Firewall Rules In-Reply-To: Message from Marc Silver of "Fri, 05 May 2000 09:01:28 +0200." <20000505090128.A4456@draenor.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 16 May 2000 01:10:29 +0100 From: Brian Somers Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > Do you feel that userland ppp is as safe as the kernel firewalling > options? I would like to gain a better understanding. What are the > major differences between the two? The only real difference is that ppp can filter packets based on whether they will cause a connection attempt (the dial filter) and can stop them from effecting the alive timer (the alive filter). ipfw is much more powerful, but for the standard deny/permit stuff that you're after, ppp is acceptable. If you use ipfw with ppp and want to use (say) ``tun0'' in your rules, make sure you run ppp with ``-unit 0'' to ensure that the two are in sync. [.....] > Thanks, > Marc -- Brian Don't _EVER_ lose your sense of humour ! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message