From owner-freebsd-security Thu Mar 15 14: 9:26 2001 Delivered-To: freebsd-security@freebsd.org Received: from flood.ping.uio.no (flood.ping.uio.no [129.240.78.31]) by hub.freebsd.org (Postfix) with ESMTP id 6AAB837B71A for ; Thu, 15 Mar 2001 14:09:23 -0800 (PST) (envelope-from des@ofug.org) Received: (from des@localhost) by flood.ping.uio.no (8.9.3/8.9.3) id XAA62363; Thu, 15 Mar 2001 23:09:17 +0100 (CET) (envelope-from des@ofug.org) X-URL: http://www.ofug.org/~des/ X-Disclaimer: The views expressed in this message do not necessarily coincide with those of any organisation or company with which I am or have been affiliated. To: nate@yogotech.com (Nate Williams) Cc: Adam Laurie , Ronan Lucio , security@FreeBSD.ORG Subject: Re: Port 113 References: <006b01c0ad38$39eed0a0$1401a8c0@tedm.placo.com> <099801c0ad7c$75b63800$2aa8a8c0@melim.com.br> <15025.5630.472269.543769@nomad.yogotech.com> <3AB1261F.23B8BE75@algroup.co.uk> <15025.10176.676792.32675@nomad.yogotech.com> From: Dag-Erling Smorgrav Date: 15 Mar 2001 23:09:16 +0100 In-Reply-To: Nate Williams's message of "Thu, 15 Mar 2001 13:36:16 -0700 (MST)" Message-ID: Lines: 13 User-Agent: Gnus/5.0802 (Gnus v5.8.2) Emacs/20.4 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Nate Williams writes: > My local sendmail doesn't use *my* ident server, but remote sendmail > servers use *my* ident server, so using ident locally speeds up mail > transfers *to* my host. No, the problem only arises if you drop TCP 113 SYNs to the floor instead of rejecting them (ipfw deny instead of ipfw reset); the server times out waiting for you to reply. If you send an RST or an ICMP UNREACH back, it'll give up immediately. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message