If you have
set an administrator password, you can use the Web Config interface
or the control panel to prevent non-administrators from changing
some settings in the settings menu.
Make
sure you have set an administrator password.
Access Web Config and log in using the
administrator name and password.
Select Device
Management > Control
Panel.
Enable the Panel Lock setting and click OK.
Note: Some locked
settings may still be available through other features of the
product. You can also lock or unlock some settings individually
using the product control panel.