This plugin protects new players and returning players from mobs and PKers.

You specify in the properties file how long this protection should last for each kind of player.
It defaults to 1440 minutes (24 hours) for new players, and 5 minutes for returning players.
The latter is mainly to give returning players a chance to escape from a baby zombie or PKer camping out by the player's respawn bed.

Players can use the /NOOB command to check how many minutes of protection they have left.
The /NOOB OFF command lets players turn off this protection.
Protected players also can't attack other players, but they can attack mobs.
To discourage players from relogging frequently to keep their protection, protected players will have a white outline around their body.

To install this plugin, copy the plugin JAR file to your server's plugins folder.

IMPORTANT: To uninstall this plugin, first download NoobUnprotect, then delete this plugin JAR, and replace it with NoobUnprotect JAR.

EXPLANATION: This plugin works by setting the Invulnerable flag to true within Minecraft for the players being protected, and then sets the flag to false when their protection expires. This flag is built into the Minecraft game and is part of each entity's properties. If you remove this plugin, nothing will set the players' Invulnerable flags to false. NoobUnprotect will set the Invunurable flag to false for every player who joins the game. Leave NoobUnprotect installed for a while until everybody's Invulnerable flag is set to false.