HI, i have a linux box running mandrake 10.1, and i have two network cards in it:
eth0: has a connection to a router which accesses internet
eth1: which is connected to a computer running windows

I was wondering how i can open up ports 47624 tcp and 2300-2400 and also 31510 tcp, so that the windows machine can access these ports for games. Do i need to configure eth0 and eth1 seperatly? I already have NAT running on this machine using the following script (from this forum :-)):
#!/bin/sh

IPTABLES=/sbin/iptables

#All The lines below are NAT routing

# flush any old rules
$IPTABLES -F -t nat

# turn on NAT (IP masquerading for outgoing packets)
$IPTABLES -A POSTROUTING -t nat -o eth1 -j MASQUERADE

# enable IP forwarding (of incoming packets)
echo 1 > /proc/sys/net/ipv4/ip_forward

Thanks in advance

Try not point out interface:
$IPTABLES -A POSTROUTING -t nat -j MASQUERADE
And make sure the nat and filter table's default policy is not drop:
iptables -L
iptables -t nat -L

ive added $IPTABLES -A POSTROUTING -t nat -j MASQUERADE to the ipmasq file and re executed it, but no luck, port 47624 is still reported as being blocked