uart service security problem

[yiran]

I found in ble_app_uart example, any device with UART app can connect to uart service and send something to COM port or just block the connection of other devices.

So can I take some action to prevent specified devices connecting to my dongle running ble_app_uart？

[Stian Røed Hafskjold]

I believe what you want to do is to use the device manager to bond the device you connect, and then use whitelisting to only allow this device to be connected in the future.

You can read about the device manager here: Device manager

An example that demonstrates bonding and whitelisting is the ble_app_proximity example. This is documented here

[Stian Røed Hafskjold]

You cannot whitelist 10000 devices. You could maybe store 10000 addresses in flash, and filter on them after it has connected, and then disconnect it. But it would take up a lot of flash and would probably be too slow. What is the use case for this scenario?