portRange - Range indicates that any traffic on those ports will be sent to the private IP address. portRemap - Remap indicates that any traffic on those ports will be sent to the private IP address at the private port. dmz - When DMZ is chosen it is the only rule allowed on that interface. A DMZ rule is effectively the same as a rule with all ports included. Range rules are more secure than setting a DMZ rule, because Range rules allow ports or groups of ports to be opened up.