From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ralf Spenneberg <lists@spenneberg.org>
Subject: RE: Help on IPTABLES
Date: 13 Oct 2003 15:23:04 +0200
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To: Gilles Yue <gyue@novelgmt.intnet.mu>
Cc: Netfilter <netfilter@lists.netfilter.org>

Am Mon, 2003-10-13 um 14.09 schrieb Gilles Yue:
> Chain INPUT (policy DROP)
>=20
> target     prot opt source               destination
>=20
> RH-Lokkit-0-50-INPUT  all  --  0.0.0.0/0            0.0.0.0/0
>=20
> ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0          tcp dpt:80
When establishing a connection with a webserver the packets in the INPUT
chain are coming from the webserver port 80, therefore spt:80 not dpt:80
Same to the rest with the exception of DNS. Here you did it correct:
> ACCEPT     tcp  --  0.0.0.0/0            0.0.0.0/0          tcp spt:53

By the way, you get more info on the rules using=20
iptables -vnL

Cheers,

Ralf
--=20
Ralf Spenneberg
RHCE, RHCX

Book: Intrusion Detection f=FCr Linux Server   http://www.spenneberg.com
IPsec-Howto				     http://www.ipsec-howto.org
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