From: "John A. Sullivan III" <jsullivan@opensourcedevelopmentcorp.com>
To: black@arbbs.net
Cc: netfilter@lists.netfilter.org
Subject: Re: dnat question
Date: Mon, 23 Feb 2004 23:18:22 -0500 [thread overview]
Message-ID: <1077596302.394.3.camel@localhost> (raw)
In-Reply-To: <403a6f6e.ec2.0@arbbs.net>
On Mon, 2004-02-23 at 16:23, John Black wrote:
> Since i'm running separate servers for FTP, Mail, and Web, and using dnat to
> port forward to these machines. Do i need these ports open on the firewall?
<snip>
I am not an expert on the inward workings of iptables but I would assume
that you do. The NAT targets will change the source and destination
addresses but the packets (at least the first packet in the case of
connection tracking) must traverse the FORWARD chain of the filter
table. It will pass through that table with the real address so there
must be a rule to allow access to the real address.
If someone tells you otherwise, listen to them :-)
--
Open Source Development Corporation
Financially Sustainable open source development
http://www.opensourcedevelopmentcorp.com
next prev parent reply other threads:[~2004-02-24 4:18 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-23 21:23 dnat question John Black
2004-02-24 4:18 ` John A. Sullivan III [this message]
2004-02-25 15:48 ` Antony Stone
2004-02-24 8:56 ` Antony Stone
-- strict thread matches above, loose matches on Subject: below --
2006-02-14 20:48 James Edward Stickland
2006-02-15 0:23 ` Edmundo Carmona
2005-10-07 3:32 Gene Dellinger
2004-06-14 17:05 DNAT question Arnauts, Bert
2004-06-14 14:35 Arnauts, Bert
2004-06-14 14:51 ` Antony Stone
2004-06-14 15:12 ` John A. Sullivan III
2004-06-15 11:40 ` John A. Sullivan III
2004-03-12 2:14 Old Cowhand
[not found] <3F1FDDFB.469242E1@goyaike.com>
2003-07-24 14:15 ` Chris Wilson
2003-07-25 2:41 ` Rio Martin.
2003-07-24 7:00 Rio Martin.
2003-07-24 8:29 ` Philip Craig
2003-07-24 8:56 ` Rio Martin.
2003-07-24 9:42 ` Chris Wilson
2003-07-24 13:37 ` Gonzalez, Federico
2003-07-24 14:16 ` Cedric Blancher
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