From mboxrd@z Thu Jan  1 00:00:00 1970
From: "JUSTIN GERRY" <JGERRY@butchers.com>
Subject: Re: Trying to setup two ethernet cards with two websites
Date: Thu, 02 Jan 2003 15:25:21 -0500
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To: JGERRY@butchers.com, netfilter@lists.netfilter.org

To streamline the firewall I am writing, can I be safe to assume that:

CLASS_A="10.0.0.0/8" 
IF1="eth0"
IF2="eth1"

(For example, I will drop anything claiming to be from a Class A
Private Network on either interface)
iptables -A INPUT  -i $IF1 -s $CLASS_A -j DROP
iptables -A INPUT  -i $IF2 -s $CLASS_A -j DROP

can be written in one line as:
iptables -A INPUT -s $CLASS_A -j DROP

This way by not specifying the interface (as it can come from either
eth0 or eth1) it will stop completely drop any requests claiming to be
from a class A private network?

Many thanks,
Justin