A data packets distributor for transferring a data packet from a source address to a destination address is provided. The data packet distributor has a plurality of predefined addresses and a data packet distributing unit. Each of the plurality of addresses indicates a network processing unit coupled to the data packet distributing unit. The data packet distributing unit is capable of forwarding a data packet to at least one of the plurality of predefined addresses for processing by using a first Network Address Translation (NAT) operation and further capable of forwarding the data packet to the destination address by using a second Network Address Translation (NAT) operation.