I want to "NAT" just specific ports to my Public IP. Do the commands below make sense? I want my internal network to be able to telnet and send email. (eth0 is my External NIC - it is exposed to the internet) iptables -t nat -A POSTROUTING -p tcp --sport 25 -o eth0 -s $INTERNAL_IP -j SNAT --to $EXTERNAL_IP iptables -t nat -A POSTROUTING -p tcp --sport 23 -o eth0 -s $INTERNAL_IP -j SNAT --to $EXTERNAL_IP Thank you, Doug
