From owner-freebsd-questions@FreeBSD.ORG Tue Apr 1 14:38:56 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 018F237B401 for ; Tue, 1 Apr 2003 14:38:56 -0800 (PST) Received: from mail.pelennor.net (user-0cdv8ma.cable.mindspring.com [24.223.162.202]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6C63243FAF for ; Tue, 1 Apr 2003 14:38:53 -0800 (PST) (envelope-from mdr@pelennor.net) Received: by mail.pelennor.net (Mail, from userid 1000) id ADA8024EA; Tue, 1 Apr 2003 16:38:52 -0600 (CST) Date: Tue, 1 Apr 2003 16:38:52 -0600 From: Matthew Rench To: freebsd-questions@freebsd.org Message-ID: <20030401163852.C14594@pelennor.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i Subject: natd redirect_port changes source address? 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 22:38:56 -0000 I recently setup ipfw and natd on my freebsd box. I added the appropriate command line options to make natd forward 4 tcp ports on the external address to a box on the internal subnet. This appears to work, except that natd is rewriting the original source address such that connections to the internal box appear to come from my external IP address. Is this behavior normal for natd, or do I have something configured incorrectly? Previously, I was using a cisco 675 to do natd, and the source address was not modified during translation. I would much prefer that the source address not be modified, as this makes it impossible for the internal box to know who is connecting. Thanks for any help, mdr -- Matthew D. Rench