From owner-freebsd-questions@FreeBSD.ORG Tue Apr 1 05:01:01 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0EFF937B401 for ; Tue, 1 Apr 2003 05:01:01 -0800 (PST) Received: from mail.littonls.com (mail.littonls.com [207.14.6.2]) by mx1.FreeBSD.org (Postfix) with SMTP id F06F443FA3 for ; Tue, 1 Apr 2003 05:00:59 -0800 (PST) (envelope-from pnevins@LittonLS.com) Received: from messagescreen.littonls.com by mail.littonls.com via smtpd (for mx1.freebsd.org [216.136.204.125]) with SMTP; 1 Apr 2003 13:00:59 UT Received: (private information removed) Received: (private information removed) Message-ID: <10DD0557A6ACAB4F993E055A0393ED562BAA77@MAIL1.littonls.com> From: "Nevins, Peter " To: "'freebsd-questions@freebsd.org'" Date: Tue, 1 Apr 2003 07:00:47 -0600 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2655.55) Content-Type: text/plain; charset="iso-8859-1" X-Content-Filtered-By: Mailman/MimeDel 2.1.1 Subject: IPFILTER Question X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Apr 2003 13:01:01 -0000 Hello. I'm a firewall admin and have run into a question regarding your OS. A client is running IPFILTER and cannot send mail to us here. We're running a Raptor Firewall for NT (yes, NT). He sends a SYN and my system responds with an ACK that is more on the lines of 1 million in length over the expected 1024. His system drops the incoming packet from me thus no email transfer. Having no working knowledge of IPFILTER, I don't know if it's on my end or his. Do you have any previous problems noted where Raptor Firewalls are the common denominator? Thanks for any assistance you can provide in this. I have a TCPDUMP if you would like to see it or know of anyone who could help. Pete