From owner-freebsd-questions Tue Aug 28 23: 1:57 2001 Delivered-To: freebsd-questions@freebsd.org Received: from scaup.mail.pas.earthlink.net (scaup.mail.pas.earthlink.net [207.217.121.49]) by hub.freebsd.org (Postfix) with ESMTP id D2AF237B405 for ; Tue, 28 Aug 2001 23:01:52 -0700 (PDT) (envelope-from cjc@earthlink.net) Received: from blossom.cjclark.org (dialup-209.247.141.66.Dial1.SanJose1.Level3.net [209.247.141.66]) by scaup.mail.pas.earthlink.net (EL-8_9_3_3/8.9.3) with ESMTP id XAA07508; Tue, 28 Aug 2001 23:01:29 -0700 (PDT) Received: (from cjc@localhost) by blossom.cjclark.org (8.11.4/8.11.3) id f7T5x9Z07673; Tue, 28 Aug 2001 22:59:09 -0700 (PDT) (envelope-from cjc) Date: Tue, 28 Aug 2001 22:59:09 -0700 From: "Crist J. Clark" To: Joel Rosenberg Cc: nick@rogness.net, freebsd-questions@FreeBSD.ORG Subject: Re: Forwarding packets from the internal network Message-ID: <20010828225909.E4864@blossom.cjclark.org> Reply-To: cjclark@alum.mit.edu References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from thisisjoel@hotmail.com on Wed, Aug 29, 2001 at 05:40:08AM +0000 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Wed, Aug 29, 2001 at 05:40:08AM +0000, Joel Rosenberg wrote: > > >You can try the -same_ports option to natd. > > Yeah, I already tried that, to no avail. > > > >I believe what he is saying is that 192.168.1.21 is responding to > >port 80 requests with a src_port of 80 and not 81 which would not > >work. So if I understand correctly: > > > > 1) natd gets packet from outside world: > > > > SOURCE DESTINATION > > remote_IP:16675 --> your_nat_outside_IP:81 > > > > 2) natd changes packet to: > > > > SOURCE DESTINATION > > remote_IP:16675 --> 192.168.1.21:80 > > > > 3) Packet gets sent to 192.168.1.21 port 80 > > > > 4) 192.168.1.21 responds sending packet back to natd > > machine. > > > > 5) natd changes packet to: > > > > SOURCE DESTINATION > > your_nat_outside_IP:80 --> remote_IP:16675 That's not what natd(8) will do. It will change it to, SOURCE DESTINATION your_nat_outside_IP:81 --> remote_IP:16675 > > 6) packet gets sent out into the world. > > > > > > Step #5 you want it to be: > > > > your_nat_outside_IP:81 --> remote_IP:16675 > > > > Is this the problem you were describing? That's what natd(8) should do unless there is some problem. I don't really understand what the problem here is. -- Crist J. Clark cjclark@alum.mit.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message