D-Link Express Ethernetwork DI-604 Owner's Manual page 12

PPPoE
If you select PPP over Ethernet (PPPoE), you will see the following page.
Enter in the username and password provided to you by your ISP.
Enter in the Service Name if your ISP uses a Service Name for the PPPoE
connection.
Click Next
PPTP
If you selected PPTP, fill out the required information, provided to you by
your ISP.
Click Next
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