From owner-freebsd-net@FreeBSD.ORG Tue Feb 17 17:22:58 2009 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 02C601065694 for ; Tue, 17 Feb 2009 17:22:58 +0000 (UTC) (envelope-from ady@ady.ro) Received: from nf-out-0910.google.com (nf-out-0910.google.com [64.233.182.187]) by mx1.freebsd.org (Postfix) with ESMTP id 917AE8FC12 for ; Tue, 17 Feb 2009 17:22:57 +0000 (UTC) (envelope-from ady@ady.ro) Received: by nf-out-0910.google.com with SMTP id e27so263198nfd.33 for ; Tue, 17 Feb 2009 09:22:56 -0800 (PST) MIME-Version: 1.0 Received: by 10.210.59.14 with SMTP id h14mr1880592eba.36.1234889737793; Tue, 17 Feb 2009 08:55:37 -0800 (PST) In-Reply-To: <292159.62731.qm@web57103.mail.re3.yahoo.com> References: <200902131430.n1DEUED7040530@freefall.freebsd.org> <292159.62731.qm@web57103.mail.re3.yahoo.com> Date: Tue, 17 Feb 2009 17:55:37 +0100 Message-ID: <78cb3d3f0902170855p70047aa0r655d8ba846d2458d@mail.gmail.com> From: Adrian Penisoara To: blogtiengviet@yahoo.com Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: freebsd-net@freebsd.org, freebsd-ipfw@freebsd.org Subject: Re: How to protect FreeBSD from IP spoofing ? 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: Tue, 17 Feb 2009 17:22:59 -0000 Hi, Check the ipfw(8) manual (includes examples) or rather go for pf (packetfilter) and check the pf.conf(5) manual. For pf you just need to add something like "antispoof for lo0". Regards, Adrian. On Tue, Feb 17, 2009 at 3:24 PM, Blog Tieng Viet wrote: > Dear all. > I am a newbie of FreeBSD, would like to get alot of information about > FreeBSD such as IPFW. > I am annoyed by IP spoofing but dont have any way to prevent it. > Can any one tell me how to do ? > Thanks in advance. > > PS: > I am using 6.4-PRERELEASE FreeBSD 6.4-PRERELEASE. > The FreeBSD box is used for web server, and it is forwarded every parket of > port 80 from LAN router. > > > > > _______________________________________________ > freebsd-ipfw@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-ipfw > To unsubscribe, send any mail to "freebsd-ipfw-unsubscribe@freebsd.org" >