![]() ![]() NAT hairpinning, or loopback, or NAT reflection is a combination of address translation that permits access of a service via the public IP address from inside the private network, thus facilitating two-way communication via the public IP address and simplifying domain name resolution.Port address translation or PAT is a subset of DNAT that translates private IP addresses to the public IP address via port numbers. Destination network address translation (DNAT) or port forwarding is commonly used to publish a service located on the private network to the publicly accessible IP address.Source network address translation (SNAT) translates internal private IP addresses to a public IP address, dramatically reducing the consumption of public IP addresses, which have now been exhausted.There are a few different types of address translation tasks that are covered by the new NAT rules in XG Firewall v18: The new NAT rules are found on the Rules and Policies Screen. ![]() Sophos XG Firewall includes an all-new powerful but intuitive NAT capability for source NAT (SNAT), destination NAT (DNAT), and other network translation tasks that actually makes NAT easy. Various other trademarks are held by their respective owners.Anyone who’s tried to configure network address translation (NAT) rules knows how challenging this can be. WatchGuard and the WatchGuard logo are registered trademarks or trademarks of WatchGuard Technologies in the United States and other countries. The public IP address that users want to connect to is 203.0.113.5. The NAT loopback policy in Fireware Web UI The NAT loopback policy in Policy Manager Add a policy to allow users on your trusted network to use the public IP address or domain name to get access to the public server on the trusted network.If you plan to use NAT loopback with a large number of IP addresses, you can specify an IP address range or subnet in the To field of the Dynamic NAT rule. The Dynamic NAT configuration in Policy Manager ![]() In the Dynamic NAT tab of the NAT configuration, add two dynamic NAT rules:
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