Ability to whitelist on lan worlds

There have recently been attacks on players’ lan, and even single player worlds by griefers. Considering you’ve made worlds cumulative to servers it’d be very wise to add some layers of security. One of those could be a warning to players that others want to join, and asking for confirmation or denial. If accepted, that player would be added to a whitelist, just like an official server. This would help prevent attacks and keep players’ worlds safe by helping to keep unwanted hackers out.