What is Secure Network Address Translation (SecureNA or SNAT)?
Secure Network Address Translation (SecureNA or SNAT) is a NAT (Network Address Translation) technique that enables the security of private networks by providing a public IP address to remote users / systems.
It enables multiple computers connected on a private local area network (LAN) to use a single IP address to access the Internet.
Secure NAT is implemented in routers and modems that allow multiple users on a LAN or small network to connect to the Internet.
In a SNAT-based network environment, all devices connect to the local SNAT device / router / modem, but each computer has a unique IP address. The SNAT-configured router sends its request by replacing the source IP address with its IP address.
When the target device receives the packet from the local device, it sees the SNAT configured source IP address - not the actual IP address of the device. This prevents the internal network from being exposed to external networks while the same IP address can be used by multiple devices.