From owner-freebsd-bugs@FreeBSD.ORG Wed May 16 14:00:12 2007 Return-Path: X-Original-To: freebsd-bugs@hub.freebsd.org Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0CF0F16A412 for ; Wed, 16 May 2007 14:00:12 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [69.147.83.40]) by mx1.freebsd.org (Postfix) with ESMTP id 1334213C46C for ; Wed, 16 May 2007 14:00:11 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.13.4/8.13.4) with ESMTP id l4GE0AmJ081310 for ; Wed, 16 May 2007 14:00:10 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.13.4/8.13.4/Submit) id l4GE0Awb081309; Wed, 16 May 2007 14:00:10 GMT (envelope-from gnats) Resent-Date: Wed, 16 May 2007 14:00:10 GMT Resent-Message-Id: <200705161400.l4GE0Awb081309@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, Vyacheslav Silakov Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 13EDA16A400 for ; Wed, 16 May 2007 13:53:36 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [69.147.83.33]) by mx1.freebsd.org (Postfix) with ESMTP id 05B9513C455 for ; Wed, 16 May 2007 13:53:36 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.13.1/8.13.1) with ESMTP id l4GDrYoh019340 for ; Wed, 16 May 2007 13:53:34 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.13.1/8.13.1/Submit) id l4GDmWI8013176; Wed, 16 May 2007 13:48:32 GMT (envelope-from nobody) Message-Id: <200705161348.l4GDmWI8013176@www.freebsd.org> Date: Wed, 16 May 2007 13:48:32 GMT From: Vyacheslav Silakov To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.0 Cc: Subject: misc/112712: ipfw is seems to be broken to limit number of connections 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: Wed, 16 May 2007 14:00:12 -0000 >Number: 112712 >Category: misc >Synopsis: ipfw is seems to be broken to limit number of connections >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed May 16 14:00:10 GMT 2007 >Closed-Date: >Last-Modified: >Originator: Vyacheslav Silakov >Release: FreeBSD 6.2-STABLE >Organization: JSC Internet-Arkhangelsk >Environment: FreeBSD fw.inar.ru 6.2-STABLE FreeBSD 6.2-STABLE #3: Fri May 11 15:45:11 MSD 2007 seal@fw.inar.ru:/usr/obj/usr/src/sys/FW i386 >Description: IPFW rules: ipfw add allow tcp from me to me 25 ipfw add allow tcp from x.x.x.0/19 to me 25 limit dst-port 100 ipfw add allow tcp from any to me 25 limit dst-port 500 works fine with FreeBSD 4.11-STABLE. However they doesn't work properly after upgrade to 6.2-STABLE. Our mail server is always heavy loaded. When I'm installing this ipfw rules number of sendmail connections is keeping around selected limit (500-600 sendmail processes. ps -ax| grep sendmail | wc). But after 5-10 minutes of runtime number of sendmail processes is going to 25 and server rejects new smtp connections. 'ipfw -f flush' and ipfw reconfiguration makes smtp-server alive for another 5-10 minutes and so on. >How-To-Repeat: >Fix: none >Release-Note: >Audit-Trail: >Unformatted: