To translate the protocol request to access the IPv6 address to the IPv4 address for communication. This function allows access from the IPv6 protocol to the IPv4 protocol.

6.1.3.2.1.1Configuration Example

The LAN of an enterprise is an IPv4 network, the IP address of the LAN server is 192.168.1.2/24, the WAN is an IPv6 network, and the IP address of the ETH1 interface in Network Secure is 2003::1/128. If you need to use the LAN server to publish web services to the IPv6 network, IPv6 network users can access the LAN server by visiting http:// 2003::1. The detailed topology is shown in the following figure.

Step 1.Define LAN and WAN zones. Before you add an SNAT policy, navigate to Network > Zones, and select the zone to which the interface belongs on the Zones page. Then, navigate to Objects > Network Objects and select the IP Group to which the LAN segment belongs. In this example, select WAN for the ETH1 interface and LAN for the ETH2 interface. See the figure below.

Step 2.Add an IPv6 to the IPv4 NAT policy.

Navigate to Policies > NAT > NAT64, click Add, and select Add NAT Policy (IPv6 to IPv4). In the Add NAT Policy (IPv6 to IPv4) dialog box, enter the name in the Name field.

Src Zone: Select WAN.

Sr Address: Select All.

Destination: Enter 2003::1/128.

Services: Select http (TCP:80).

Translation Src IP To: Set the IPv4 address to the IP address of the ETH2 interface address, 192.168.1.1.

Destination Translation: Set the IPv4 address of the LAN server to 192.168.1.2/32. By default, Allow matching packets, no application control policy applied is selected.

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Step 3.Save the configuration. Finally, click Save. Then, the configuration of the IPv6 to IPv4 NAT policy is complete. See the figure below.

Step 4.WAN users can access the LAN server by visiting http://[2003::1].