Help: Iptables rules

["Minh Cao" <caom@xxxxxxxxxxx>]

Hi,

I am new to iptables.
Please help me to create a rules, which allows everything in and out both
interfaces.

What I have but not worked:
iptables -A FORWARD -i $EXTIF -o $INTIF -j ACCEPT
iptables -A FORWARD -i $INTIF -o $EXTIF -j ACCEPT

iptalbles -t nat -A POSTROUTING -o $EXTIF -j MASQUERADE


Thanks
Minh