A method includes receiving a data packet over one of a wireless communication link or a wired communication link from a user device in the local network. The data packet includes internet protocol (IP) address information. The method also includes determining whether the IP address information includes corresponding packet forwarding rules. When the IP address information includes corresponding packet forwarding rules, the method includes performing network address translation on the IP address information by mapping a source IP address from a private source IP address subnet to a public source IP address subnet, attaching the public source IP address subnet to the header of the data packet, and forwarding the data packet from the Ethernet switch to an external network port. The external network port is configured to connect the network routing device to the external network.
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