Patent ID: 8711839

Claim:
A network translation device (NAT) for automatic port forwarding, said device comprising: a dynamic host configuration protocol server visible to a wireless area network (WAN) for providing at least one private local area network address; and a forwarding engine coupled to said dynamic host configuration protocol server for forwarding ports to the at least one private local area network address, wherein the network translation device: detects whether either a single private local area network address is leased by the dynamic host configuration protocol server or more than one private local area network address is leased by the dynamic host configuration protocol server; in response to detecting that the dynamic host configuration protocol server is leasing the single private local area network address, enables automatic port forwarding via the forwarding engine to forward from the WAN all but NAT application reserved ports to the single private local area network address in response to detecting that the dynamic host configuration protocol server is leasing more than one private local area network address, ceases the automatic port forwarding.