I have a small server with my wife, and she doesn't like playing when monsters spawn. That's fine, I can deal with Peaceful, and Spawners still spawn mobs that I can farm. But in the Nether, there are no Ghasts or Pigmen. Is there a way to let some mobs spawn but not others?
What plugins and/or configuration do I need to obtain this? I've got a bukkit server with Essentials.