As a child you would wait. And watch from far away. But you always knew that you'd be the one that work while they all play. In youth you'd lay awake at night and scheme. Of all the things that you would change, but it was just a dream! Here we are.
A whitelist is a list or register of entities that provide a particular privilege, service, mobility, access or recognition. Entities on the list will be accepted, approved and/or recognized. Whitelisting is the reverse of blacklisting, the practice of identifying entities that are denied, unrecognised, or ostracised.
As an admistrator or OP of your server you must manage all of the banned players. This is different than using a whitelist as a banned player will never have access to the server. We recommend that you use this only in the event of someone that you are sure you do not want on the server anymore. You can easily do this by using the ban command. You can also unban a player from the server using the pardon command.