[plug] problem forwarding packets

[Jon Miller]

I've trying to get some data to go in both direction using ipchains on
one server and iptables on the other.  Then running tcpdum -nqt -i eth0
(local lan) I cannot see any instance of the ports I'm trying to get to
work.
I use the following rule:
ipchains -A forward -i eth0 -p udp --dport 1804
ipchains -A forward -i eth0 -p udp --sport 1804
.
.
.

iptables -A forward -i eth1 -p udp --dport 1804
iptables -A forward -i eth1 -p udp --sport 1804



and several others like the above.  Can anyone tell me what I'm doing
wrong.  I need to open the ports to let data flow bi-directional to
servers behind the firewall.  Do I have to specify the servers ipaddress
such as:
iptables -A forward -p tcp -s 192.168.0.5 -d 192.168.1.9 -dport 20481
etc 

Thanks
-- 
Jon Miller <jlmiller at mmtnetworks.com.au>
MMT Networks Pty Ltd