A whitelist is a security list that provides access to only pre-approved programs, IPs, or email addresses. Whatever is on the "list" gets access to system resources, whereas the rest are denied access. Whitelisting is the opposite of blacklisting, as you might expect.27 May 2021
How does the whitelist command work MineCraft?
A whitelist is the list of players that are allowed access to your server. If whitelisting is enabled, only players whose usernames are on the whitelist, will be able to join and play on your MineCraft Server. You can enable or disable whitelisting in the Mulicraft Control Panel.