From owner-freebsd-stable Thu Jun 26 16:22:12 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.5/8.8.5) id QAA18770 for stable-outgoing; Thu, 26 Jun 1997 16:22:12 -0700 (PDT) Received: from uk1.imdb.com (UK1.IMDb.COM [192.68.174.59]) by hub.freebsd.org (8.8.5/8.8.5) with SMTP id QAA18763 for ; Thu, 26 Jun 1997 16:22:07 -0700 (PDT) Received: from robh.imdb.com [194.222.68.23] by uk1.imdb.com with esmtp (Exim 1.62 #1) id 0whNm3-0004pQ-00; Fri, 27 Jun 1997 00:16:24 +0100 Date: Thu, 26 Jun 1997 12:15:21 +0100 (BST) From: Rob Hartill X-Sender: robh@localhost To: stable@freebsd.org Subject: ipfw, mtu and fragments Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-stable@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi all, With ipfw running, we've had reports from users having no success accessing our www servers - they can't connect at all. One user talked to his ISP and they traced it to a 'MTU' setting problem. A friend thinks this is a problem with incorrect MTUs resulting in fragmented packets. Are we on the right track ? Anoyone have experience of this problem ? Would adding the 2nd 'ipfw' config below help ? .. /sbin/ipfw add pass tcp from any to ${ip} 80 setup /sbin/ipfw add pass tcp from any to ${ip} 80 frag thanks in advance, rob -- Rob Hartill Internet Movie Database (Ltd) http://www.moviedatabase.com/ .. a site for sore eyes.