Why not just switch off the router ! That seems easier than covering it with a tin foil !
Here’s what happens when you put tin foil on your WiFi router.
https://blossom.primal.net/2d41b137ba99af55347f634db4a43935d6eaed805bf6b39a8fe0173e4366d1bd.mp4
Discussion
I for one have my BTC node plugged into the Ethernet slots of my router, as should every serious Nostr user :)
That one is a great use case .. totally agree on every nostrich running a node .. a solmn responsibility that I still need to get around (:-
... I tried bunch of times using Umbrel but they were more of trial runs .. need to sit down with command line one of these days ..
Start9 is better than Umbrel.