Static NAT is a network method that permanently maps one private IP address to one public IP address. It allows a device on a private network to be reached from the internet using the assigned public address.

The mapping stays the same until a network administrator changes it. Static NAT is useful when a device needs a consistent public address.

How It Works

• A device receives a private IP address on the local network.
• The router assigns it a specific public IP address.
• The router translates traffic between the two addresses.
• Incoming traffic to the public address reaches the mapped private device.
• The mapping remains fixed.

Common Uses

• Hosting web servers.
• Making a mail server reachable from the internet.
• Providing remote access to network devices.
• Publishing services from a private network.
• Giving servers consistent public addresses.

Related Terms: NAT, Dynamic NAT, Port Address Translation, Private IP Address, Public IP Address, IP Address, Router, Network Address Translation, Port Forwarding, Firewall

Related Entries

• Router
• Router
• ARP
• Bridge Mode
• Firewall