Originally posted by PakaNoHida:

If I have god mode on, I cannot come onto your server and use commands. I can only use them on my server, at least its been that way for me for a long time.

I think what they are saying is prevent people from bringing the spoils over from single player or other servers.

Isn't there a mod for that? I don't mod.

@OP basically no. You should only play with people you trust.