From: Jason Opperisano <opie@817west.com>
To: netfilter@lists.netfilter.org
Subject: Re: Policy Misunderstanding: RTFM Guidance Requested.
Date: Wed, 01 Sep 2004 12:43:12 -0400 [thread overview]
Message-ID: <1094056991.1824.4.camel@wolfpack.ljm.dom> (raw)
In-Reply-To: <8ca42282040901045464650094@mail.gmail.com>
On Wed, 2004-09-01 at 07:54, Mike wrote:
> I thought I had seen others on this list discuss starting with a
> completely closed router that denies all traffic - INPUT, OUTPUT, and
> FORWARD; filter, nat, and mangle.
yes, you have. i don't personally agree with this (with respect to nat
& mangle).
> echo " Set the filter/nat/mangle packet Matching Table Policy."
> $IPTABLES -t filter -P INPUT DROP
> $IPTABLES -t filter -P OUTPUT DROP
> $IPTABLES -t filter -P FORWARD DROP
good, good...
> $IPTABLES -t nat -P PREROUTING DROP
> $IPTABLES -t nat -P POSTROUTING DROP
> $IPTABLES -t nat -P OUTPUT DROP
> $IPTABLES -t mangle -P INPUT DROP
> $IPTABLES -t mangle -P OUTPUT DROP
> $IPTABLES -t mangle -P FORWARD DROP
> $IPTABLES -t mangle -P PREROUTING DROP
> $IPTABLES -t mangle -P POSTROUTING DROP
bad... you will be in a world of hurt trying to get anything to work
with the policies of every nat & mangle chain set to drop.
filter in the filter table
nat in the nat table
mangle in the mangle table
the ultimate FM:
http://iptables-tutorial.frozentux.net/iptables-tutorial.html
-j
--
Jason Opperisano <opie@817west.com>
next prev parent reply other threads:[~2004-09-01 16:43 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-01 1:01 Mail Server Behind IPTABLES Ajen Diwakar
2004-09-01 4:22 ` George Alexandru Dragoi
2004-09-01 11:54 ` Policy Misunderstanding: RTFM Guidance Requested Mike
2004-09-01 13:27 ` Deepak Seshadri
2004-09-01 15:46 ` Mike
2004-09-01 16:50 ` Jason Opperisano
2004-09-01 17:53 ` Mike
2004-09-01 17:38 ` Deepak Seshadri
2004-09-01 16:40 ` Mike
2004-09-01 14:44 ` Alistair Tonner
2004-09-01 16:20 ` Mike
2004-09-01 16:53 ` Alistair Tonner
2004-09-01 18:12 ` Mike
2004-09-01 16:43 ` Jason Opperisano [this message]
2004-09-01 14:50 ` Mail Server Behind IPTABLES Alistair Tonner
[not found] ` <1094054540.5456.16.camel@matevz.net>
2004-09-01 16:27 ` Alistair Tonner
2004-09-01 18:12 ` Matevz
2004-09-01 18:19 ` Jason Opperisano
2004-09-01 18:25 ` Jason Opperisano
2004-09-01 18:23 ` Alistair Tonner
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