Samsung PN51E6500EFXZA - Manual (Page 473)

Sites , the PIN screen appears. The
first time you access Approved Sites ,
enter the default PIN, 0-0-0-0 using
the numbers keypad on your remote.
You can change the PIN using the
Reset password for the Approved
Sites function. See below.
Approved Sites Feature : Turns the
Approved Sites function on or off.
Reset password for Approved Sites :
Change the Approved Sites password.