From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ralf Spenneberg <lists@spenneberg.org>
Subject: Re: default policy
Date: 25 Aug 2003 10:59:42 +0200
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To: Payal Rathod <payal-iptables@staticky.com>
Cc: Netfilter <netfilter@lists.netfilter.org>

Am Die, 2003-08-26 um 10.35 schrieb Payal Rathod:
> $IPTABLES -P INPUT DROP
> $IPTABLES -P OUTPUT ACCEPT
> $IPTABLES -P FORWARD DROP
>=20
> $IPTABLES -t nat -A POSTROUTING -j MASQUERADE
>=20
> $IPTABLES -A FORWARD -s 125.125.125.0/24 -p tcp -m tcp --dport 21 -j ACCE=
PT
> $IPTABLES -A FORWARD -s 125.125.125.0/24 -p tcp -m tcp --dport 80 -j ACCE=
PT
> $IPTABLES -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
> $IPTABLES -A FORWARD -p icmp --icmp-type 0 -j ACCEPT
>=20
> When I make FORWARD POLICY as ACCEPT it works, but not when I make it
> to DROP? Is there any bad rule anywhere?
Yes, apply masquerading only to the external interface, like
$IPTABLES -t nat -A POSTROUTING -o eth1 -j MASQUERADE
If 125.125.125.0 is your internal ip-range you should be able to browse
to:
http://217.160.128.61
But since you do not allow any DNS traffic you can't resolve any
hostnames.

Cheers,

Ralf
--=20
Ralf Spenneberg
RHCE, RHCX

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