From owner-freebsd-bugs@FreeBSD.ORG Thu Nov 12 21:20:02 2009 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 20AFA1065676 for ; Thu, 12 Nov 2009 21:20:02 +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 D868E8FC15 for ; Thu, 12 Nov 2009 21:20:01 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id nACLK1xs045307 for ; Thu, 12 Nov 2009 21:20:01 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.3/8.14.3/Submit) id nACLK1as045306; Thu, 12 Nov 2009 21:20:01 GMT (envelope-from gnats) Resent-Date: Thu, 12 Nov 2009 21:20:01 GMT Resent-Message-Id: <200911122120.nACLK1as045306@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, "Stephane D'Alu" Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 7091410656A4 for ; Thu, 12 Nov 2009 21:10:29 +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 5F1B78FC4B for ; Thu, 12 Nov 2009 21:10:29 +0000 (UTC) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.14.3/8.14.3) with ESMTP id nACLASEt069955 for ; Thu, 12 Nov 2009 21:10:28 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.3/8.14.3/Submit) id nACLASNR069948; Thu, 12 Nov 2009 21:10:28 GMT (envelope-from nobody) Message-Id: <200911122110.nACLASNR069948@www.freebsd.org> Date: Thu, 12 Nov 2009 21:10:28 GMT From: "Stephane D'Alu" To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: kern/140512: pf doesn't block udp packets on multicast addresses X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 Nov 2009 21:20:02 -0000 >Number: 140512 >Category: kern >Synopsis: pf doesn't block udp packets on multicast addresses >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Nov 12 21:20:01 UTC 2009 >Closed-Date: >Last-Modified: >Originator: Stephane D'Alu >Release: 8.0-RC2 >Organization: >Environment: FreeBSD incal.sdalu.com 8.0-RC2 FreeBSD 8.0-RC2 #14: Mon Nov 9 23:14:33 CET 2009 root@incal.sdalu.com:/usr/obj/usr/src/sys/INCAL amd64 >Description: for udp firewall rule is somewhat equivalent to (full rules available on request) set skip on lo0 scrub in all block in log all pass out all pass in proto { tcp, udp } from any to net0 port domain pass in proto udp from any to net0 port { isakmp, 4500 } When sniffing net0 with tcpdump the following packet will show up: ks358229.kimsufi.com.mdns > 224.0.0.251.mdns rbx-48-m2.routers.ovh.net.1985 > ALL-ROUTERS.MCAST.NET.1985 pastel-pink.feralhosting.com.6771 > 239.192.152.143.6771 ks358206.kimsufi.com.50914 > 239.255.255.250.1900 They all seems to be using multicast addresses (Dont know if broadcast or tcp have the same issue) >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted: