D-Link DVG-1402S Quick Installation Manual page 11

Step 4.2:
Select Static IP Address if your ISP provided you with IP address
information that will not change. You will need your ISP to provide you
with the IP address information about your Internet account, if your ISP
statically assigns an IP address to you.
Enter the provided IP address in the WAN IP Address field. Enter the
corresponding subnet mask in the WAN Subnet Mask field. Enter the IP
address of your ISP's gateway in the WAN Gateway Address field.
Enter the IP address of a Domain Name Server (DNS) in the Primary
DNS Address field. Click the Next button to continue.
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