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Administration Guide

Benefits and limitations of the NAT46 mode

Benefits and limitations of the NAT46 mode

Key benefits

NAT46 mode offers a clear advantage in dual-stack application deployments, especially when back-end infrastructure supports only IPv6 but clients may be connecting over either IPv4 or IPv6.

  • Seamless IPv4-to-IPv6 Translation: It enables clients using IPv4 to access services hosted on IPv6-only servers, without requiring any changes on the client side.

  • Simplified Back-end Configuration: The back-end servers do not need to support or be aware of IPv4. FortiADC handles all the address translation transparently.

  • No DNS Modifications Required: Clients continue to resolve the domain to an IPv4 VIP. The translation is handled entirely on FortiADC, avoiding DNS-level dual-stack complexity.

Benefits and limitations of the NAT46 mode

Benefits and limitations of the NAT46 mode

Key benefits

NAT46 mode offers a clear advantage in dual-stack application deployments, especially when back-end infrastructure supports only IPv6 but clients may be connecting over either IPv4 or IPv6.

  • Seamless IPv4-to-IPv6 Translation: It enables clients using IPv4 to access services hosted on IPv6-only servers, without requiring any changes on the client side.

  • Simplified Back-end Configuration: The back-end servers do not need to support or be aware of IPv4. FortiADC handles all the address translation transparently.

  • No DNS Modifications Required: Clients continue to resolve the domain to an IPv4 VIP. The translation is handled entirely on FortiADC, avoiding DNS-level dual-stack complexity.