From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jun Sun <jsun@junsun.net>
Subject: Re: Any holes in this firewall script?
Date: Wed, 4 Jun 2003 08:15:01 -0700
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In-Reply-To: <1054705385.3434.0.camel@india>; from dharmu@nsecure.net on Wed, Jun 04, 2003 at 11:12:37AM +0530
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To: "Dharmendra.T" <dharmu@nsecure.net>
Cc: netfilter@lists.netfilter.org

On Wed, Jun 04, 2003 at 11:12:37AM +0530, Dharmendra.T wrote:
> Yes, but after that you are allowing everything from all the
> interfaces.  Which is not recommended to do so.
>

Eh?  Which rules allow everything from all interfaces?

I have the following, which only allow all packets with the right
IP address range from internal interface and lo:

$IPTABLES -A INPUT -p ALL -i $INTIF -s $INTLAN -j ACCEPT
$IPTABLES -A INPUT -p ALL -i $LOIF -s $LOIP -j ACCEPT
$IPTABLES -A INPUT -p ALL -i $LOIF -s $INTIP -j ACCEPT
$IPTABLES -A INPUT -p ALL -i $LOIF -s $EXTIP -j ACCEPT

Jun