Firewall Wizards mailing list archives
Re: FreeBSD 4.9 ipfw natd -- Port Forwarding
From: Adam Humphrey <hump () casualritual com>
Date: Mon, 28 Jun 2004 18:05:41 -0700
I tried the ipfw fwd command as well with no success. It was forwarding the packets perfectly but they were still addressed to the outside IP address of my freeBSD server and my internal web server was dropping them because they were not addressed to its IP. Thanks for the help. Regards, Adam
From: Ng Pheng Siong <ngps () netmemetic com> Date: Tue, 29 Jun 2004 08:22:41 +0800 To: Adam Humphrey <hump () casualritual com> Cc: <firewall-wizards () honor icsalabs com> Subject: Re: [fw-wiz] FreeBSD 4.9 ipfw natd -- Port Forwarding On Fri, Jun 25, 2004 at 05:27:18PM -0700, Adam Humphrey wrote:Natd.conf: redirect_port tcp 192.168.1.101:80 80 But now my web logs show everything coming from my firewall's external IP address and not the actual IP of the request. How do I get the original IP for the request to pass though my firewall and get my log files displaying the appropriate source IP addresses?I use 'ipfw fwd', no NAT. I don't see the problem you describe. In my case the packets are being forwarded to a RFC 1918-addressed jail within the same box. Purely from a packet flow perspective I think there is no difference between this and forwarding to an external server, although I can't rule out the involvement of some magic kernel knobs and I haven't read the code in a while. Example from my /etc/rc.firewall.rules: add <number> fwd 192.168.x.x tcp from any to x.x.x.x 80 keep-state setup See manpage for more info on 'fwd'. HTH. Cheers. -- Ng Pheng Siong <ngps () netmemetic com> http://firewall.rulemaker.net -+- Version Control for Cisco PIX & Netscreen http://sandbox.rulemaker.net/ngps -+- M2Crypto, ZServerSSL/Zope, Blog
_______________________________________________ firewall-wizards mailing list firewall-wizards () honor icsalabs com http://honor.icsalabs.com/mailman/listinfo/firewall-wizards
Current thread:
- FreeBSD 4.9 ipfw natd -- Port Forwarding Adam Humphrey (Jun 28)
- Message not available
- Re: FreeBSD 4.9 ipfw natd -- Port Forwarding Anton Alin-Adrian (Jun 29)
- Message not available
- Re: FreeBSD 4.9 ipfw natd -- Port Forwarding Ng Pheng Siong (Jun 29)
- Re: FreeBSD 4.9 ipfw natd -- Port Forwarding Adam Humphrey (Jun 29)
- Re: FreeBSD 4.9 ipfw natd -- Port Forwarding Ng Pheng Siong (Jun 29)
- Re: FreeBSD 4.9 ipfw natd -- Port Forwarding Adam Humphrey (Jun 29)