Command game from remotely connected PC

I would like to control my game which is running on the server from a remotely connected PC (my PC, the client).

What is the best approach to do this? I would like to have this work in all builds, including shipping.

I have read the following post Remote commands - Programming & Scripting - Unreal Engine Forums
However, it appears a bit old and so I am not sure if this technique would still work.

Could someone advise, please?