I need to limit administrative access to the RG. I have set a custom password, but anyone that knows the IP and has access to the unit and can read the number on the device is prompted to change the password. I'm looking for a way to secure the device so only a true administrator (me) can change the password. Can this be done? And yes, putting a lock on the door is not currently an option; can the code on the unit be updated by me? That would prevent others from changing the password since they wouldn't have that piece of information. TIA.