From owner-freebsd-security Tue May 14 11:25:43 2002 Delivered-To: freebsd-security@freebsd.org Received: from CPE0004761ac738-CM00109515bc65.cpe.net.cable.rogers.com (CPE0004761ac738-CM00109515bc65.cpe.net.cable.rogers.com [24.103.39.131]) by hub.freebsd.org (Postfix) with SMTP id 9F29637B403 for ; Tue, 14 May 2002 11:25:35 -0700 (PDT) Received: (qmail 573 invoked from network); 14 May 2002 18:26:34 -0000 Received: from unknown (HELO vsivyoung) (66.46.21.253) by cpe0004761ac738-cm00109515bc65.cpe.net.cable.rogers.com with SMTP; 14 May 2002 18:26:34 -0000 Message-ID: <042e01c1fb75$048699c0$c801a8c0@vsivyoung> From: "Miroslav Pendev" To: "Aragon Gouveia" Cc: References: <030301c1fb56$ef9fefc0$c801a8c0@vsivyoung> <005501c1fb70$bb32ebb0$01000001@aragon> Subject: Re: ipfw + nat + port_redirect - works, but not for the internal net Date: Tue, 14 May 2002 14:27:33 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Yes, I recompiled the kernel with options IPFIREWALL_FORWARD I even I made some tests but with no success with the following in rc.firewall (24.24.24.24 is not my real ext. IP): ${fwcmd} add fwd 24.24.24.24,9090 tcp from any to 192.168.1.100 80 in It seems to be what I need but... I have one stupid Linksys Cable&DSL router with NAT and from the internal network I can access redirected port on the external interface to internal host: this is what I need to do, but with FreeBSD firewall. So it seems that this is not a big problem, I just do not know how to get it work. --Miro > Howdy, > > Have you tried an ipfw fwd rule? > > > Regards, > Aragon > > ----- Original Message ----- > From: "Miroslav Pendev" > > To: > Sent: Tuesday, May 14, 2002 4:52 PM > Subject: ipfw + nat + port_redirect - works, but not for the internal net > > > > Hi Guys! > > > > I have FreeBSD 4.5 RELEASE as Firewall with two NICs: > > > > xl0 - external interface > > xl1 - internal interface > > > > ipfw and natd + port_redirect works just fine! > > > > My problem is that when someone from the internal network > > is trying to hit external_IP:redirected_port, the redirection > > is not working for him - connection refused. > > It works only for host from outside (Internet). > > > > For simplicity lets assume that the firewall type is *open*. > > > > What rules to ipfw or natd I need in order to permit > > the port redirection to works for the internal hosts, also? > > > > I RTFM, I search the archives but I didn't found a clear > > answer to that situation. > > > > This is common problem to the corporate servers behind > > firewalls_with_natd_and_redirected_port and probably deserve > > to be into FreeBSD handbook - otherwise, good documentation! > > > > There is some security concerns *is port_redirection a good idea > > at all*, but that's it I need this working - don't ask why ;-) > > > > Thanks in advance! > > > > --Miro To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message