From owner-freebsd-net@FreeBSD.ORG Thu Jan 26 19:44:21 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3E8AF1065700 for ; Thu, 26 Jan 2012 19:44:21 +0000 (UTC) (envelope-from mike@sentex.net) Received: from smarthost1.sentex.ca (smarthost1-6.sentex.ca [IPv6:2607:f3e0:0:1::12]) by mx1.freebsd.org (Postfix) with ESMTP id ECB3D8FC08 for ; Thu, 26 Jan 2012 19:44:20 +0000 (UTC) Received: from [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a] (saphire3.sentex.ca [IPv6:2607:f3e0:0:4:f025:8813:7603:7e4a]) by smarthost1.sentex.ca (8.14.5/8.14.4) with ESMTP id q0QJiJxq003479; Thu, 26 Jan 2012 14:44:19 -0500 (EST) (envelope-from mike@sentex.net) Message-ID: <4F21AD09.9010307@sentex.net> Date: Thu, 26 Jan 2012 14:44:09 -0500 From: Mike Tancsa Organization: Sentex Communications User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 MIME-Version: 1.0 To: satish amara References: In-Reply-To: X-Enigmail-Version: 1.1.1 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.71 on IPv6:2607:f3e0:0:1::12 Cc: freebsd-net@freebsd.org Subject: Re: stateful firewall implementation in FreeBSD X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 26 Jan 2012 19:44:21 -0000 On 1/26/2012 12:24 PM, satish amara wrote: > Hi, > I have question regarding stateful firewall implementation of FreeBSD. > IPF has stateful “keep state” option. Hi, Take a look at pf, not ipf. ipf is not really maintained or used much any more under FreeBSD. With respect to dealing with congestion, there are many params you can tune in pf. Take a look at the man pages for pf.conf for details as you can control how this situation is dealt with to some degree. ---Mike -- ------------------- Mike Tancsa, tel +1 519 651 3400 Sentex Communications, mike@sentex.net Providing Internet services since 1994 www.sentex.net Cambridge, Ontario Canada http://www.tancsa.com/