D-Link SharePort DIR-506L User Manual page 27

Section 3 - Configuration
If you selected L2TP Connection, you will see the following screen.
Enter your L2TP username, password and other information
supplied by your ISP. Click Next to continue.
If you selected Wi-Fi HotSpot, a list of available wireless networks
will appear. Select the wireless network supplying an Internet
connection and click Select at the bottom.
If the network you are connecting to has encryption/security
enabled, you must enter the Wi-Fi Password. Click Next to continue.
D-Link DIR-506L User Manual 23