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Secure Network Address Translation (SecureNA or SNAT)

Definition - What does Secure Network Address Translation (SecureNA or SNAT) mean?

Secure network address translation (SecureNA or SNAT) is a network address translation (NAT) technique that enables private network security by providing a public Internet Protocol (IP) address to remote users/systems. It allows multiple computers that are connected within a private local area network (LAN) to use a single IP address to access the Internet.

Techopedia explains Secure Network Address Translation (SecureNA or SNAT)

Secure NAT is implemented in routers and modems that provide Internet connectivity to multiple users in a LAN or small network.

In a SNAT-based network environment, all devices connect to the local SNAT device/router/modem, but each computer has a distinct and unique IP address. The SNAT-configured router sends its request by replacing the source IP address with its IP address. When the destination device receives the packet from the local device, it sees the SNAT-configured source IP address - not the device's actual IP address. This secures the internal network from exposure to external networks while allowing the same IP address to be used by multiple devices.

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