Network Address Translation Port Mapping Protocol
The Network Address Translation Port Mapping Protocol (NAPT) is a technique used in computer networking to allow multiple devices on a local network to share a single public IP address. It works by mapping internal IP addresses and their corresponding port numbers to a single external IP address and a different port number. This enables efficient use of IP addresses and helps maintain security by hiding internal network structures.
NAPT is commonly used in home routers and firewalls, allowing devices like computers, smartphones, and gaming consoles to access the internet simultaneously. By managing the translation of addresses and ports, NAPT ensures that data packets are correctly routed to and from the appropriate devices within the local network.