Open your Web browser and type “http://192.168.0.1” into the URL address box. Then press the Enter or Return key.
Type “admin” for the username and leave the password field blank (unless you've already set a password).
Click OK
Once you have logged in, the Home screen will appear.
Click Run Wizard
Do enable encryption. Your DI-624 is capable of much faster speeds than your internet connection, so the slow down due to encryption won't make a difference.
Oh and as far as admin for password, if that be the case......change that too, I have found networks that were unsecure and had the default password as admin!! This allows me to get you main ISP email address and account password, using a simple program.