- Navigate to Interfaces | WAN.
- Check the Enable Interface checkbox (it should be checked by default):
- Choose an IPv4 Configuration Type (usually DHCP).
- Choose an IPv6 Configuration Type, or leave it set to None.
- Leave MAC Address blank. Manually entering a MAC address here is known as MAC address spoofing. You can enter a MAC address here if you want to force your ISP to hand you a different IP address, or a different set of DNS servers. Be warned, however, that the MAC address entered must have a valid manufacturer’s prefix or it won’t work.
- Leave MTU, MSS, Hostname, and Alias IP address blank.
- Check the Block private networks and loopback addresses checkbox (it should be checked by default). This will block RFC 1918 private addresses from being sent out over the public internet.
- Check the Block bogon networks checkbox (it should be checked by default). This will block packets from IP addresses not yet assigned by IANA from being sent or received:
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Click on the Save button when done.