NAT translates the IP addresses of computers, registered or unregistered, in a local network to a single IP address. This address is often used by the router that connects computers to Internet. The router can be connected to a DSL modem, Cable modem, T1 line, or even a Dial-up modem.

Blockchain is empowering Smart NAT management scheme to overcome limitations that exist in vertical model. With Blockchain implementation for NAT, every peer will agree on necessary parameters required to manage complicated NAT and Mobility management procedures.