Disabling Remote UI

The Remote UI is useful because the machine settings can be specified by using a Web browser on a computer. To use the Remote UI, the machine must be connected to a computer over the network. If you do not need to use the Remote UI, you might want to disable the Remote UI to reduce the risk of having your machine controlled remotely over the network by malicious third parties.
Tap <Menu> in the Home Screen.
Tap <System Management Settings>.
If a screen for entering a System Manager ID and PIN is displayed, enter the System Manager ID and PIN, tap <Apply>, and press . Setting the System Manager ID
Tap <Remote UI Settings>  <Use Remote UI>.
Tap <Off>.
Disables the Remote UI.
Enables the Remote UI.