From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thorsten Scherf <tscherf@web.de>
Subject: Re: Multiple -d flags
Date: Sat, 11 Jan 2003 22:37:10 +0100
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To: Mattia Martinello <mattia@mattiamartinello.com>, netfilter@lists.netfilter.org

> iptables -A FORWARD -s 0.0.0.0/0 -d 213.21.136.8/255.255.255.255 -dport
> 80 -j ACCEPT
> shows me the following error:
> iptables v1.2.5: multiple -d flags not allowed
> Try `iptables -h' or 'iptables --help' for more information.

You have to specify a protocol with the -p option, then you can use --dpo=
rt!
Try this one:

iptables -A FORWARD -s 0.0.0.0/0 -d 213.21.136.8/255.255.255.255 -p tcp=20
--dport 80 -j ACCPET