From mboxrd@z Thu Jan  1 00:00:00 1970
From: "louie miranda" <lmiranda@chikka.com>
Subject: Forwarding problem, :( port redirection!
Date: Mon, 24 Feb 2003 16:12:51 +0800
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Im trying just to forward simple ftp, 21 request into my internal machine.
Im typing this but it does not work..

any ideas?


iptables -t nat -A PREROUTING -i eth0 -p tcp -d 10.0.0.11 --dport 21 -j
DNAT --to 203.190.72.108:21
iptables -A FORWARD -i eth0 -o eth1 -p tcp -d 203.190.72.108 --dport 21 -j
ACCEPT


eth0: Internet
eth1: LAN


Doc: http://www.knowplace.org/netfilter/syntax.html#conf6
================================
Destination NAT the packets (changes the destination IP address in the IP
header and port number in the TCP/UDP header)
    iptables -t nat -A PREROUTING -i eth0 -p protocol -d
ip_address_of_eth0 --dport original_port_number -j DNAT --to
destination_ip_address:destination_port_number
Forward the natted packets (allow the natted packet to be forwarded)
    iptables -A FORWARD -i eth0 -o eth1 -p protocol -d
destination_ip_address --dport destination_port_number -j ACCEPT
================================









--
thanks,
louie miranda