From owner-freebsd-questions@FreeBSD.ORG Tue Jan 11 16:39:46 2005 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 60AA016A4CE for ; Tue, 11 Jan 2005 16:39:46 +0000 (GMT) Received: from cqgigw.cqg.com (cqgigw.cqg.com [208.48.16.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 1C9B443D41 for ; Tue, 11 Jan 2005 16:39:46 +0000 (GMT) (envelope-from tomc@cqg.com) Received: from cqgmail.cqg.com (int.cqg.com [96.0.0.2]) j0BGddSe012475; Tue, 11 Jan 2005 09:39:40 -0700 Received: from d3stomc ([192.168.17.154]) by cqgmail.cqg.com (8.12.8/8.12.8) with ESMTP id j0BGdWpu030878; Tue, 11 Jan 2005 09:39:32 -0700 From: "Tom Connolly" To: "'Shane Ambler'" , "'FreeBSD Mailing Lists'" Date: Tue, 11 Jan 2005 09:39:32 -0700 Message-ID: <003b01c4f7fc$20e4c7a0$9a11a8c0@d3stomc> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4510 In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.181 Importance: Normal X-MailScanner: Found to be clean, Found to be clean X-MailScanner-Information: Please contact the ISP for more information X-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (score=0, required 3) Subject: RE: ip address behind router ? 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, 11 Jan 2005 16:39:46 -0000 Shane Ambler wrote: > Looks to me that this page is not entirely accurate. (at least from > where I=20 > am) > It would appear to get a proxy server somewhere along the way. >=20 Yes this is true. If your behind a proxy or have a complicated network setup, this will fail. For most DSL/Cable modem customers this simple solution will work fine. These services are going to get the IP address of the last packet sent from the network. If you have more than one router, this will be the last router (NAT device) in your setup. It should work for most simple cases though. There are also some other web servers out there that offer this functionality. Just Google on external or outside IP and see if any of the other sites show any differences. > I would consider using the dynamic dns services - such as no-ip - and > use a perl script that updates then ping your dns name. Not sure if > they are more accurate that the below idea though. =20 >=20 That is an interesting idea. I would bet they may have the same problems with proxy servers and such but it would be worth a try. Good Luck, Tom