CyberGuard dictionary / Network Security
Network Address Translation
Network address translation changes IP address information as packets cross a network boundary, often letting multiple private devices share public connectivity.
In simple terms
A home router can send traffic from several internal devices through one external address by keeping track of each connection.
Technical explanation
Basic NAT maps addresses; network address and port translation also maps transport ports. Translation tables permit return traffic to reach the initiating device, but NAT alone is not an authorization or encryption control.
NAT rewrites address or port information as traffic crosses a gateway. It conserves address space and changes reachability, but it is not a complete security policy by itself.
Examples in practice
A laptop with a private address connects outward through a router that presents a public address to the destination site.
Several laptops browse through one public IP. To investigate a specific request, administrators correlate the public port and timestamp with the gateway's translation log.
Why it matters
Understanding translation helps diagnose connectivity and avoids treating address hiding as a complete security boundary.
VERIFY & LEARN MORE
Sources and further reading
Published 2026-10-15 · Last updated 2026-10-15 · CyberGuard editorial content. Source links provide context; they do not imply endorsement.