From owner-freebsd-doc@freebsd.org Sat Oct 8 07:34:19 2016 Return-Path: Delivered-To: freebsd-doc@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id C93F6C05436 for ; Sat, 8 Oct 2016 07:34:19 +0000 (UTC) (envelope-from petri.riihikallio@metis.fi) Received: from metis.fi (unknown [IPv6:2001:1bc8:102:7b51::101]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 91D95215 for ; Sat, 8 Oct 2016 07:34:19 +0000 (UTC) (envelope-from petri.riihikallio@metis.fi) Received: from dys5qhyhfw7y65p777w0y-3.rev.dnainternet.fi (dys5qhyhfw7y65p777w0y-3.rev.dnainternet.fi [IPv6:2001:14ba:3f2:d300:c496:c1ac:b37b:dcbc]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by metis.fi (Postfix) with ESMTPSA id B5B9417217 for ; Sat, 8 Oct 2016 10:34:15 +0300 (EEST) From: Petri Riihikallio Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 10.0 \(3226\)) Subject: An error in Handbook IPFW example Message-Id: Date: Sat, 8 Oct 2016 10:34:14 +0300 To: freebsd-doc@FreeBSD.org X-Mailer: Apple Mail (2.3226) X-BeenThere: freebsd-doc@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Documentation project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 08 Oct 2016 07:34:19 -0000 About half way through = https://www.freebsd.org/doc/handbook/firewalls-ipfw.html it says: > # Allow outbound NTP > $cmd 00260 allow tcp from any to any 37 out via $pif setup keep-state But that doesn=E2=80=99t allow NTP. NTP uses UDP 123. TCP 37 is the = obsolete TIME protocol. (Unless I am completely at a loss, of course.) --=20 Cheers Petri GSM +358 400 505 939