From owner-freebsd-net@FreeBSD.ORG Tue Feb 17 14:50:58 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 C187B1065724 for ; Tue, 17 Feb 2009 14:50:58 +0000 (UTC) (envelope-from blogtiengviet@yahoo.com) Received: from web57103.mail.re3.yahoo.com (web57103.mail.re3.yahoo.com [216.252.111.116]) by mx1.freebsd.org (Postfix) with SMTP id 5F09C8FC0A for ; Tue, 17 Feb 2009 14:50:58 +0000 (UTC) (envelope-from blogtiengviet@yahoo.com) Received: (qmail 62968 invoked by uid 60001); 17 Feb 2009 14:24:16 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1234880656; bh=w4GLYkC0Rr636wPVsuIyWFWCxHzQsO2nZbiG6wf0cm0=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=UlyG65aCYZKIa7M9hNCKcOtx5N4nzkQO7PDXbxCySUarxjCgqea65ITZGakFm8eq1fhMolETIVkBFQHZM231RFDigcQ5nJS6lepHX4VC2ynQjfjCa0rqIyiJ2mDsP9m5NkacqvLO5JQGK+u/oULp/Jql39R65QhvnfIYvfNbomc= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=lUb52jO/KZaYgZuPp1+c1RAvxD9O5JtjKokYjybFS7GKhNnWcvmX4Gq4pVNdQxThUQ9hjj3u/wqZbGSdsJQIH+nrE5GTMKW9YRGGEsuNtm9f5KAoULuzo+wt1+nwqhjM9/5ruZi26JLKH5jxs9TnJdcQIldJhJehMasxaZ49xAI=; Message-ID: <292159.62731.qm@web57103.mail.re3.yahoo.com> X-YMail-OSG: OgWtrAQVM1nkv9d8HNm9Ac5hcpZ5atiisgUDaqeIIP7W0TPae6rr6_XsIfggs7Qac3vSFRjbmzgkyOA7Pckj11w_veXr24kON3AkdkJaGHOttYTVuMhdti41q05DhQ.8pexdxEPNW9ilQT6qrcozDRvi4Z4- Received: from [222.226.245.101] by web57103.mail.re3.yahoo.com via HTTP; Tue, 17 Feb 2009 06:24:16 PST X-Mailer: YahooMailWebService/0.7.289.1 Date: Tue, 17 Feb 2009 06:24:16 -0800 (PST) From: Blog Tieng Viet To: linimon@FreeBSD.org, freebsd-net@FreeBSD.org, freebsd-ipfw@FreeBSD.org In-Reply-To: <200902131430.n1DEUED7040530@freefall.freebsd.org> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 17 Feb 2009 16:42:17 +0000 Content-Type: text/plain; charset=us-ascii X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: Subject: How to protect FreeBSD from IP spoofing ? X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: blogtiengviet@yahoo.com 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 14:51:03 -0000 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.