The simplest option for the protection of the configuration is the establishment of a password.
Note: As long as a password hasn't been set, anyone can change the configuration
of the device. For example, your Internet account information could be
stolen, or the device could be reconfigured in a way that the protection-mechanisms
could by bypassed.
Note: Note: If a password has not been set, the Power LED flashes, until
the devices have been configured correctly.