Comtrend Corporation VR-3030 User Manual page 40

Select a Service, then click the Save/Apply button.
One to One: mapping one local IP to a specific public IP
Many to one: mapping a range of local IP to a specific public IP
Many to many(Overload): mapping a range of local IP to a different range of
public IP
Many to many(No Overload): mapping a range of local IP to a same range of
public IP
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