[wlug] Sudo

Hi everyone. I'm wondering if someone can explain the rationale behind sudo. Ubuntu uses sudo by default, rather than having normal root access, although you can use root access if you wish. This is supposedly done with security in mind, but I don't see how it makes things more secure. It seems to me that allowing a user to execute commands which require root privileges, without having the root password, is really dangerous. For example, logged in as bnonn I can execute: $ sudo passwd root And change the root password. This doesn't seem secure to me! What am I missing? Regards Bnonn