D-Link DFL-600 - Manual (Page 15)

Enter a password in the Password field, and again in the Verify Password
field. This will become the logon password for the DFL-600. This password
is case-sensitive, so remember to use capital letters when logging on to the
DFL-600’s web-based manager
− if you enter a password with capital letters
here. The user name, admin, will not be changed here.
Note: If you choose to input a password, please remember it. If you lose your
password, you will have to manually reset the unit (using the reset button on
the rear panel of the unit). Resetting the DFL-600 will return all
configuration parameters to their factory default values, so all of your
settings will be lost and will need to be entered again. The default Username
is admin with a password that is also admin.
Click Next to continue.