You don't want to be disturbed by players on your server? Then don't let them come near you. With the plugin Shield you can automatically push away all players who come near you.

Any player with the shield.use permission can run the /shield command to activate or deactivate the shield. Players with the shield.bypass permission cannot be pushed away.

Command:
/shield | Enable or Disable the Shield

Permissions:
shield.use | Use /shield
shield.bypass | Bypass to avoid being pushed away.