From owner-freebsd-doc@FreeBSD.ORG Thu Sep 11 07:30:03 2008 Return-Path: Delivered-To: freebsd-doc@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 16ADB1065671 for ; Thu, 11 Sep 2008 07:30:03 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id E2DB38FC1A for ; Thu, 11 Sep 2008 07:30:02 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.2/8.14.2) with ESMTP id m8B7U2Aw053877 for ; Thu, 11 Sep 2008 07:30:02 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.2/8.14.1/Submit) id m8B7U2Jt053876; Thu, 11 Sep 2008 07:30:02 GMT (envelope-from gnats) Resent-Date: Thu, 11 Sep 2008 07:30:02 GMT Resent-Message-Id: <200809110730.m8B7U2Jt053876@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-doc@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Aleksandr Stankevic Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 740DA1065680 for ; Thu, 11 Sep 2008 07:21:21 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [IPv6:2001:4f8:fff6::21]) by mx1.freebsd.org (Postfix) with ESMTP id 5EEB88FC08 for ; Thu, 11 Sep 2008 07:21:21 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.14.2/8.14.2) with ESMTP id m8B7LKjA079113 for ; Thu, 11 Sep 2008 07:21:20 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.2/8.14.1/Submit) id m8B7LKaV079112; Thu, 11 Sep 2008 07:21:20 GMT (envelope-from nobody) Message-Id: <200809110721.m8B7LKaV079112@www.freebsd.org> Date: Thu, 11 Sep 2008 07:21:20 GMT From: Aleksandr Stankevic To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: docs/127290: FAQ book: discourage the use of port 53 for outgoing DNS queries X-BeenThere: freebsd-doc@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Documentation project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 11 Sep 2008 07:30:03 -0000 >Number: 127290 >Category: docs >Synopsis: FAQ book: discourage the use of port 53 for outgoing DNS queries >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-doc >State: open >Quarter: >Keywords: >Date-Required: >Class: doc-bug >Submitter-Id: current-users >Arrival-Date: Thu Sep 11 07:30:02 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Aleksandr Stankevic >Release: >Organization: >Environment: >Description: http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/security.html#EXTRA-NAMED-PORT -- quote -- BIND uses a random high-numbered port for outgoing queries. If you want to use port 53 for outgoing queries, either to get past a firewall or to make yourself feel better, you can try the following in /etc/namedb/named.conf: options { query-source address * port 53; }; You can replace the * with a single IP address if you want to tighten things further. -- quote -- We should discourage the use of query-source address * port 53 because of the last vulnerability in DNS. >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: