This recipe will describe how to create an NPt entry. NPt, or Network Prefix Translation, allows you to map one IPv6 prefix to another. It is similar to 1:1 NAT, except that with IPv6, translation is more often used with entire prefixes and not single IP addresses.
- Navigate to
Firewall|NAT. - Click on the
NPttab.
- Click on one of the
Addbuttons to add a new entry. - Choose the appropriate interface in the
Interfacedrop-down menu (you can usually leave this set to WAN):
- In the first
Addresstext field, enter the internal IPv6 prefix, and select the correct CIDR in the corresponding drop-down menu. - In the second
Addressedit box, enter the external IPv6 prefix, and select the correct CIDR in the corresponding drop-down menu. - Enter a brief description in the
Descriptiontext field. - When you are done making changes, click on the
Savebutton. - Click on the
Apply Changesbutton.