Hey @Kofana,

I do not believe there are any settings that would allow you to disable ethernet ports on your nodes. You would need to configure something like this through a switch connected to your Deco network. 

What you would likely be looking for is the features just now be adding to specific Deco models that allow for you to create device whitelists with Access Control settings. The features are still rolling out so keep an eye out for any firmware updates to your model. These settings would allow you to control what devices could use the ethernet connection, rather than disabling the ports entirely.

Here is the overview of the settings that come with the latest update: https://community.tp-link.com/us/home/forum/topic/621608?sortDir=ASC&page=1