1. On the console menu, type 2 and press Enter.
2. pfSense will prompt you for the number of the interface you want to configure. For the WAN interface, this will be 1, so type 1 and press Enter.

3. pfSense will ask you if you want to configure the IPv4 WAN address through DHCP. In most cases, you will want to type y, because the WAN interface address will be assigned by your ISP via DHCP. Type y and press Enter. If you enter n, pfSense will prompt you for a WAN IPv4 address, and then the subnet bit count:

4. pfSense will ask you whether you want to configure the IPv6 WAN address through DHCP6. You can type y if your ISP supports IPv6 addressing, or type n, in which case IPv6 addressing for the WAN interface will be disabled.
5. pfSense will ask you whether you want to revert to HTTP for the webConfigurator protocol. Unless you have a reason for not using HTTPS for the web GUI, type n and press Enter.
6. The configuration process is now complete. The settings will be saved and pfSense will reload them.