0022631: Add multiports to the 1-to-1 NAT firewall

Migrated from: https://tracker.clearos.com/view.php?id=22631

Reported by: NHowitt

Filed on behalf of customer jusystech.

Add the ability to a list of ports such as 1,22, 23, 25, 587, 8080:8084 to the 1-to-1 NAT app. This would require using the iptables multiport or mport modules.

Note that this feature request could easily apply to the Port Forwarding app at the same time.